Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on May 8, 1985.
As of Tuesday, December 11th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
32/36 DGV 5A1970-1973 Datsun 240Z, 1974 Datsun 260ZBCDD disconnected, OEM AC replaced with open type AC and EGR delay valve installed on 73-74 vehicles

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-133-3
  • Executive Order 133-3 / D133-3
  • ARB # D-133-3
  • Executive Order No: D-133-3
  • C.A.R.B. No. D-133-3
  • Resolution D-133-3
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-133-3 PDF

D-133-3 Document:



                                                          {Page 1 of 2)
                                State of California
                                AIR RESOURCES BOARD

                              EXECUTIVE ORDER D—133—3
                  Relating to Exemptions under Section 27156
                                of the Vehicle Code


                        REDLINE, INC., A SUBSIDIARY OF IMbAC

                     REDLINE CARBURETOR EXCHANGE KIT USING
                     WEBER MODEL 32/36 DGY 5A CARBURETORS


Pursuant to the authority vested in the Air Resources Board by Section 27156
of the Vehicle Code; and

Pursuant to the authority vested in the undersigned by Sections 39515 and
39516 of the Health and Safety Code and Executive Order G—45—5;

IT 1S ORDERED AND RESQOLVED: That the installation of the Redline Carburetor
Exchange Kit No. K8688 using two (2) Weber 32/36 DGY 5A carburetors has been
fsund not to reduce the effectiveness of required motor vehicle pollution
control devices and, therefore, is exempt from the prohibitions of Section
27156 of the Vehicle Code for the vehicles listed below:

                                             Redline                Weber
  Year           Make           Model        Kit No.              Carburetor

1970—1973       Datsun          2402          K8688             32/36 DGY 5A

1974            Datsun          2607          K8688             32/36 DGV 5A

This Executive Order is valid provided that installation instructions for this
device will not recommend tuning the vehicle to specifications different from
those submitted by the device manufacturer.

Changes made to the design or operating conditions of the device, as exempted
by the Air Resources Board, that adversely affect the performance of a
vehicle‘s pollution control system shall invalidate this Executive Order.

Marketing of this device using an identification other than that shown in this
Executive Order or marketing of this device for an application other than
those listed in this Executive Order shall be prohibited unless prior approval
is obtained from the Air Resources Board.  Exemption of a kit shall not be
construed as an exemption to sell, offer for sale, or advertise any component
of a kit as an individual device.

This Executive Order does not constitute any opinion as to the effect that the
use of this device may have on any warranty either expressed or implied by the
vehicle manufacturer.


REDLINE, INC.                                    EXECUTIVE ORDER D—133—3
                                                 {Page 2 of 2)



THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESQURCES BOARD OF ANY
CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY ALLEGED
BENEFITS OF THE REDLINE CARBURETOR EXCHANGE KIT NO. K86ss.

No claim of any kind, such as "Approved by Air Resources Board" may be made
with respect to the action taken herein in any advertising or other oral or
written communication.

Section 17500 of the Business and Professions Code makes untrue or misleading
advertising unlawful, and Section 17534 makes violation punishable as a
misdemeanor.

Section 43644 of the Health and Safety Code provides as follows:

         "43644.   (a)   No person shall install, sell, offer for
         sale, or advertise, or, except in an application to the
         state board for certification of a device, represent, any
         device as a motor vehicle poliution control device for use
         on any used motor vehicle unless that device has been
         certified by the state board. No person shall sell, offer
         for sale, advertise, or represent any motor vehicle
         pollution control device as a certified device which, in
         fact, is not a certified device.        Any violation of this
         subdivision is a misdemeanor." —

Any apparent violation of the conditions of this Executive Order will be
submitted to the Attorney General of California for such action as he deems
advisable.

                           cforniac
Executed at El Monte, California, this
                                      tnie    &      day of M%iffii;f;


                                             »fMbA
                                             K. D. Drachand, Chief
                                             Mobile Source Division


              State of California
              AIR RESOURCES BOARD




EVALUATION OF THE REDLINE CARBURETOR EXCHANGE KIT
        NO. K8688 USING MODEL 32/36 DGV 5A
    WEBER CARBURETORS FOR EXEMPTION FROM THE
   PROHIBITIONS OF VEHICLE CODE SECTION 27156
    IN ACCORDANCE WITH SECTION 2222, TITLE 13
      OF THE CALIFORNIA ADMINISTRATIVE CODE




                  APRIL, 1985


                EVALUATION OF THE REDLINE CARBURETOR EXCHANGE
                   KIT NO. K8688 USING MODEL 32/36 DGV 5A
                  WEBER CARBURETORS FOR EXEMPTION FROM THE
                 PROHIBITIONS OF VEHICLE CODE SECTION 27156
                  IN ACCORDANCE WITH SECTION 2222, TITLE 13
                    OF THE CALIFORNIA ADMINISTRATIVE CODE




                                       by
                            Mobile Source Division
                              State of California
                              AIR RESOURCES BOARD
                              9528 Telstar Avenue
                              El Monte, CA   91731




{This report has been reviewed by the staff of the California Air Resources
Board and approved for publication.   Approval does not signify that the
contents necessarily reflect the views and policies of the Air Resources
Board, nor does mention of trade names or commerical products constitute
endorsement or recommendation for use.)


                                    SUMMARY



      Redline, Inc., a distributor of Italian made Weber carburetors, has

applied for exemption from the prohibitions of Vehicle Code Section 27156 for

the Redline Carburetor Exchange Kit No. K8688 using two (2) Weber model 32/36

DGV 5A carburetors.

      The Redline Carburetor Exchange Kit replaces the original equipment

Hitachi carburetors on 1970—74 Datsun 24072/2602 model vehicles.   The

carburetor dashpot, hot air intake and deceleration device are not retained in

the Redline Kit installation.   A delay valve is added in the exhaust gas

recirculation valve vacuum control line for the 1973 and 1974 model—year

vehicles which use exhaust gas recirculation systems.   Exhaust gas

recirculation was not used on 1970—1972 model—year vehicles.   Due to space

limitations the original equipment air cleaner cannot be accommodated.      The

Redline Carburetor Exchange Kit utilizes an open type air cleaner.

      Comparative exhaust and evaporative emission tests demonstrate that the

aftermarket Redline Carburetor Exchange Kit using Weber model 32/36 DGV 5A

carburetors does not adversely affect emissions.   Based on the results of the

tests and the evaluation of the Redline Carburetor Exchange Kit, the staff

recommends that the exemption be granted as requested for the Datsun 1970—1973

model—year 2407 model and the 1974 model—year 2607 model vehicles.


                             CONTENTS

                                        Page Number



SUMMARY

CONTENTS

I.     INTRODUCTION

I1I.   CONCLUSIONS

III.      RECOMMENDATIONS

IV.    DEVICE DESCRIPTION

V.     EVALUATION PROGRAM

VI.    DISCUSSION



APPENDIX

       Carburetor Diagrams                A—1




                             11.


EVALUATION OF THE REDLINE CARBURETOR EXCHANGE KIT NO. K8688 USING MODEL 32/36
DGV 5A WEBER CARBURETORS FOR EXEMPTION FROM THE PROHIBITIONS OF YEHICLE CODE
SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13 OF THE CALIFORNIA
ADMINISTRATIVE CODE


I.     INTRODUCTION

       Redline, Inc. of Torrance, California, a subsidiary of Imported Parts

and Accessories Corporation {IMPAC), is a distributor of Italian—made Weber

carburetors.   The company has applied for exemption from the prohibitions of

Vehicle Code Section 27156 for a Carburetor Exchange Kit designated as Redline

Kit No. K8688 utilizing two (2) Weber model 32/36 DGV 5A carburetors.      The

Carburetor Exchange Kit is designed to replace the original equipment

manufacturer (OEM) Hitachi HJG46W and HMB46W carburetors as found on 1970—1974

Datsun (Nissan) 2407 and 260Z vehicles equipped with 146 and 156.5 cubic inch

displacement (CID) engines.

       This report describes the evaluation of the Redline Carburetor Exchange

Kit and the findings.

I1I.   CONCLUSIONS

       Comparative exhaust emission data and other information submitted by the

applicant demonstrated that the Redline kit using two (2) Weber model 32/36

DGY 5A carburetors meets the Air Resources Board {ARB) requirements for

exemption from the prohibitions of Vehicle Code Section 27156.

111.   RECOMMENDATIONS

       Based on the submitted comparative data of the Redline Carburetor

Exchange Kit, the staff recommends that Redline, Inc. be granted exemption

from the prohibitions of Vehicle Code Section 27156 for the Redline Carburebor

Exchange Kit No. K8688 using two (2) model 32/36 DGV 5A Weber carburetors for

the years, make, and models of vehicles listed below:


       Year(s)          Make                Mode]              Engine Description

      1970—1973         Datsun              24072                   146 CID

      1974              Datsun              2607                    156.5 CID



IV.     DEVICE DESCRIPTION

        The Redline Carburebor Exchange Kit No. K8688 uses two Weber Model 32/36

DGY 5¥ carburetors to replace the two OEM Hitachi Model HJG46W or HMB4GW

carburetors.       The HJGA46W carburetor is used on 1970—1972 vehicles and the

HMB4GW is used on the 1973—1974 vehicles.           The Hitachi carburetor is a single

barrel sidedraft carburetor; its venturi area is automatically changed

according to engine air intake.         The amount of fuel passing through the main

jet is governed by a tapered needle.         A power valve is provided to improve

performance during acceleration from medium speed.           A choke valve and

auxiliary nozzle is used for cold starting.          Main components of the carburetor

consist of:       a float chamber, suction chamber, suction piston, piston damper,

metering needle and jet, throttle valve body, power valve, choke valve and

auxiliary nozzle.      The two Hitachi carburetor models are similar in design.

The newer model HMB46W has provision for exhaust gas recirculation (EGR) and

refined fuel metering valve for improved emissions control.           EGR was not

utilized in the 1970—1972 model—years.

       The Weber 32/36 DGV 5A carburetor is a progressive two—barrel down draft

design (see Appendix A).         The Weber carburetor uses a mechanically—operated

secondary which starts to open after the primary throttle opens approximately

68 percent.

       The Hitachi HMB4GW carburetor on 1974 model—year vehicles uses a boost

controlled deceleration device (BCDD) to slow throttle closing to control the


air/fuel mixture during decelerations.    Earlier model—year vehicles have

similar throttle closing systems but they were not specifically designated as

BCCD systems.    When the Weber 32/36 DGY 5A carburetors are installed, the

throttle closing devices are no longer retained.     The Weber installation does

not retain the Hitachi carburetor dashpot, hot idle compensator, or hot air

intake.    A delay valve is added in the EGR valve vacuum control line for

1973—1974 Datsuns.     This valve acts to smooth out the application of the

vacuum signal during transient conditions.     It has no effect during steady

throttle conditions.     Due to space limitations the OEM air cleaner unit cannot

be accommodated.     The Redline Carburetor Exchange Kit utilizes an "open" type

air cleaner.

V.    EVALUATION PROGRAM

      A.    METHOD

      The applicant performed comparative CVS—75 exhaust emission and

evaporative emission tests at Import Certification Laboratories {ICL) in

Anaheim, California.    A 1974 Datsun 260Z equipped with a 156.5 CID engine and

4—speed manual transmission was used.     The baseline test was performed with

the Hitachi HMB4GW carburetor.     A representative production Redline Kit was

used for the comparative testing.

      Confirmatory testing was conducted at the ARB Haagen—Smit Laboratory on

a second 1974 Datsun 2607.

      A 1974 model—year vehicle was used as the test vehicle since vehicles of

this model—year were required to meet a more stringent NOx standard.     It would

be expected that vehicles of previous model—years would meet the respective

emissions standards using the same Redline Kit.


      Evaporative emissions testing was conducted to evaluate any emission

changes which might result from the use of the open type air cleaner.           The

carbon—trap procedure was used for testing at ICL.        This was the evaporative

emission test procedure applicable to 1977 and older model—year vehicles.             The

testing at the Haagen—Smit Laboratory was conducted using the Sealed Housing

Evaporative Determination (SHED) procedure which has been utilized for

evaporative emission testing commencing with the 1978 model—year.        The

introduction of this procedure made the carbon—trap method obsolete.

      B.      TEST RESULTS

      The applicant‘s submitted comparative exhaust emission and evaporative

emission data are given in Table 1.

                                         Table 1

                                 Emission Test Data

                                                                     Carbon Trap
                           Exhaust Emissions          Fuel Economy   Evaporative
                        HC         CO        NOx         City         Emissions
  Condition                      gm/mi                 mi/gal           gm/test

Baseline                6.5      68.5           1.4      13.6            0.5

Redline Kit             2.2      25.5           1.2      16.2            0.67

1974 Passenger Car      3.2      39             2.0       ——             2.0
     Standards

      Confirmatory test results are contained in Table 2.


                                      Table 2

                              Emission Test Data

                                                                        SHED
                           Exhaust Emissions          Fuel Economy   Evaporative
                        HC         CO        NOx         City         Emissions
  Condition                      ga/mi                 mi/gal           gm/test

Baseline               5.3       58.3           1.3     14.9            10.7

Redline Kit            3.1       39.4           1.3      14.4            9.0
1974 Passenger Car     3.2       39             2.0      ——               ——
     Standards
                                          2 4 —


VI.     DISCUSSION

        The applicant‘s submitted comparative emission test data are generally

acceptable.     The vehicle baseline exhaust emissions for hydrocarbons and

carbon monoxide exceeded standards by a factor of approximately two.      The

exhaust emissions of the test vehicle with the Redline Kit No. K8688 are lower

than the baseline emissions with the OEM carburetors; they are also below the

1974 emission standards.     There was a 0.17 gram/test increase in evaporative

emissions but the 0.67 gram/test level is well below the 2.0 gram/test

standard.

        During the confirmatory testing at the ARB laboratory, the idie mixture

setting procedure specified in the submitted Redline installation instructions

was used for adjusting the Weber carburetors on the test vehicle.      The Redline

instructions specified that the vehicle manufacturer‘s procedure was to be

used to set the idle mixture.     The vehicle manufacturer‘s instructions specify

setting the mixture at 1,400 rpm engine speed to 1.3% + 0.3% carbon monoxide

without air injection.     The mixture was then to be checked at idle engine

speed with air injection.    The carbon monoxide level should be less than

2.7%.     The idle mixture setting of the test vehicle as set by using the above

procedure was very lean (hydrocarbons — 0.13 ppm).    The vehicle stalled on the

first acceleration and did not restart within the specified limit of one

minute.

        Subsequently, Redline submitted revised idle mixture setting

instructions.    These instructions reflected the method Redline had used during

its test program.    The idle mixture is set at idle engine speed to 2.0 + 0.3%

carbon monoxide with air injection.    The test vehicle was reset using the

revised procedure and retested.    The vehicle, however, experienced difficult


start and stalling problems again.       As a result, another retest was conducted

following the same revised idle mixture setting procedure.       This time there

was a less severe starting problem and time limits for starting and

accelerations were not exceeded.

      The above tests were run using the original Redline Kit manual choke

starting procedure:

           "Pull choke lever back 1/2 way.       Pump the accelerator pedal 2 full

           times.     Start engine."

To alleviate the potential driveability problem exhibited during the above

tests, Redline changed to the following starting procedure:

           "Cold Start

           Pump the accelerator pedal two full times.       Beginning with 2/3

           choke lever travel, adjust as needed to achieve proper cold start.

           Start engine.     As soon as practical disengage choke lever.

           Hot Start

           Depress the accelerator pedal 1/2 way to the floor and hold at this

           point.     Start engine.    Choke should remain disengaged."

      The staff is of the opinion that these changes in the starting procedure

should not cause the emissions to increase ({see Table 2) from HC/CO of 3.1/39

grams per mile to the extent that the baseline emissions HC/CO of 5.3/58 grams

per mile would be exceeded.

      The absence of the BCDD with the carburetor exchange did not seem to

affect emissions even though the CYS—75 test contains more than 20

deceleration modes.     (The oxides of nitrogen emissions did not increase).

      The confirmatory evaporative emissions test conducted by the ARB

laboratory utilized the SHED procedure which has been used for conducting

evaporative emissions tests commencing with the 1978 model—year.      Although


                                         — 6 ~


there are no specific evaporative emissions standards for 1974 model—year

vehicles using the SHED procedure, the back—to—back test indicated an

evaporative emissions decrease with the Redline kit installed.

      The Redline Carburetor Exchange Kit is identified as Kit No. K8688.    The

kit uses the same Weber Model 32/36 DGY 5A carburetors to replace the Hitachi

HJG4GW and HMB4GW carburetors for the specified vehicle models.   The OEM

throttle actuation arrangements for the different Hitachi carburetors vary in

the various vehicle models.   The Redline kit supplies hardware including

control rods, left and right rod ends and a throttle control bell crank to

allow the throttle linkage for all vehicle models to function with the Weber

éarburetors in a manner similar to the OEM Hitachi carburetors.


                           APPENDIX    A




         Air—fuel mixture from                         Damper Rod /
         rear carburetor               m—1
                                                                Oil
                                                \             Damper     |
                                                VX_\J         Vacuum \




                                   ‘                      M      Choke Yalve
                                                               1
                                                                diess                    .
                                                                 & Air           & Air
                                        |                        &               @a# Airduel mixture
                                                      &                 Main Nozzle

                                            t       l =*}L              Jet Needie
                                                    hfi\ Auxiliary Nozzle For Starting
3SM215                                          _
                                                                        Flooat Chamber




                  HITACHI $.U. TYPE CARBURETOR
                        (SECTIONAL VIEW)




                                 A—1


TYPICAL VIEW 32/36 DGV




              REDLINE INC.   The Weber Importers
        A—2


                           GRAPH 1        _A/F COMPARISON




           10 _


           1P _
                                                                                            Ouvyy 1/¥




n ¥¥o 4¥
GG
                                                               &8
                                                   a» PB a8"
                  #xaa .
                        .
                        a=«. .               «
                           ----  .
                                --  .
                                  ----  .
                                       --  .
                                         ---




ail CYH L
                                          Uitachi OCH 340                  Yienrinse— ui
                                                                                           JT1LG¥HL NJd4O 3QIM




134¥d
                                Revised Weber 32/34 DFT 9A                 .. wwsmmm

                             Exempteo Weber 32734 DFT                     @azmumer®
                                      |          esmm          man   ns    prvomemmmme

                                    200                                   300

                   AIR Frow —(KG/MIN)


                                 INSTALLATION INSTRUCTIONS
                                                                                                                  W
 READ & UNDERSTAND ALL STEPS OF THESE INSTRUCTIONS BEFORE
 BEGINNING THIS INSTALLATION. After unpacking, examine the carburetor and
 other components for shipping damage. If any damage is found, notify
 shipper/supplier immediately.


                                                   DATSUN
                                  240, 260Z (1970—1974)
                                        For Kit Nos. K8688, 52—50510
                                       Using (2) Weber 32/36 DGV—5A

           TOOLS AND EQUIPMENT                                                             PARTS SUPPLIED WITH
                 NEEDED:                                                                     INSTALLATION KIT

  Combination, box or open end wrenches                                          1 — Hardware Kit
    (metric and standard)                                                        2 — Weber 32/36 DGV—5A Carburetors
  Socket set with 12 mm socket                                                   2 — Carburetor Adapters
  Screwariver (regular and Phillips)                                             2 — Air Filter Assemblies
  Pliers
  Gasket Scraper
  Rags                                                                               NOTE: Obtain a new fuel filter
  Cleaning Solvent                                                                             and install it when
  Knife                                 .                                                      installing this kit.
                                 TUNE—UP SPECIFICATIONS
All tune—up specifications for the Weber Carburetor remain the same as those specified by the
Factory EXCEPT FOR IDLE MIXTURE SETTING. Refer to the Information Tag supplied in this kit
labeled "Engine Tune—Up Specifications" for idle mixture setting. Emissions tune—up should be
carried out by a suitably qualified Dealer or Independent garage, using infrared gas analyzing
equipment.
 N TE: Late model vehicles fitted with Emission Control Systems have many vacuum fines and electrical
 connections in their fuel systems. It is essential when dismantling that disconnected lines be identified
 with a corresponding number tag or label system. To establish function, locate and identify the sourceof
 each line.
  1.   Remove the vehicle‘s gas cap.                                   4.   1973—74 Vehicles Only: Remove the
                                                                            radiator cap and drain the engine‘s coolant
 2.    Disconnect the battery.                                     .        system. Remove the coolant hoses that run
                                                                       _    to the base of the stock carburetor. (Fig. A).
 3.    Disconnectand remove the factory airfilter                           CAUTION: Be sure engine is cold when
       assembly.                                                            performing this step to avoid possible in—
                                                                            juries from hot water.




                   R      COOLANT

                                                                                                              E.0. N No. D—133—3
                                                                                                    C.AR.B. E.0.
                           aistona of California Air Resources Board Executive Order No. D—133—3 (C.AR.B.
This is sold under the provisions
   nmon                                                                                                           Vehicl e Code.
                                                            the prohibitions  of Section 27156 of the California
Products with C.AR.B. E.0. numbers are exempt from
Performan   ce kits so noted are legal  for use on  public highways  in California.
WEBER DISTRIBUTI N


5.    Disconnect and remove the stock fuel                12.   Rotate the throttle linkage at the firewal!
      hoses. Plug the fuel lines.                                  180°. (Fig. D)
6.    Disconnect the servo—diaphragm from the             13.   (A) Install the throttle operating rod.     —
      throttle linkage and remove it from the in—                   plied in the kit, through the existis
      take manifold. Retain the boits for use later.                holes and lock it into the stock linkay~
      (Fig. B)                                                      from the firewall. (Fig. D)

7.    Disconnect and remove the Opener Con—                     (B) 1973 Vehicles Only: Thestock linkage
      trol Valve assembly. (Fig. B) .,                                         balls myst be removed from the bel!
                                                                               crank assembly to adapt Weber throt—
                                                                   tle operating rod. Linkage balls are
                                                                   riveted on belil crank and must be
                                                                   drilled out to be removed.
                                                         THROTTLE LINKAGE
                                                         PIVOT NEAR ;
                                                         center            /   /0 —_—
                                                                                  «_ $r0. 2CKk B
                                                         OF FiRE       /            [     —_ w ~ —2arsy, N Pus,
                                                         WALL      /                             ~— «n ~—"Hes
                                                                                1                           _2         _




           VALVE     SERVO       OPENER
FIG. B               DIAPHRAGM   CONTROL                                                BELL CRANK PIVOT
                                 vaLve                                                  ON LEFT siDe or          mal
                                                                                        FIRE WALL       Q
                                                          FIG. D
8.    Disconnectthe choke cables from the stock
      carburetors.
                                                          14. BENCH ASSEMBLY: Install the cartg
                                                                   tor mounting studs in the adapters usit                 ~
9.    Disconnect the intermediate throttle rod
                                                                   the thread locking compound supplied.
      from the auxiliary throttle shaft assembly.
                                                                the proper stud tool is not available, the
      Remove the screw from the throttle linkage
                                                                "double—nut" method can be used. ( Take 2
      sleeve and slide out this assembly. (Fig. C)
                                                                nuts and lock them together 1/3 the way
                                                                down the stud using a suitable wrench on
              THROTTLE LINKAGE      AUXILIARY
              SLEEVE                THROTTLE
                                                                the top nut, tighten the stud into the mani—
                                    SHAFT                       fold.) Do Not Over Tighten Studs.
SERVO DIAPHRAGM                           INTERMEDIATE
                                          THROTTLE ROD
                                                          15.      Remove the rags from the stock intake
                                                                   ports and install the carburetor adapters
                                                                   using the gaskets supplied in the kit. Use
                                                                   the original carburetor nuts to secure the
                                                                   carburetor adapters in place. (Fig. E)




 FIG. C

10.   Remove the four (4) nuts securing each
      carburetor to the intake manifold and re—
      tain for use later. Remove the carburetors
      and linkage parts as one unit.

11.    Insert a clean rag into the manifoid ports to
       prevent debris from entering the engine.
       Clean the mounting surface thoroughly
       with a gasket scraper.


16.    Install the Weber carburetors on the             22.    Bypass the stock Idle Speed Screw (1.S.S.)
       adapters using the carburetor flange gas—               on the intake manifold (located next to
       kets provided. (NOTE: Carburetor throttle               EGR valve) by intalling a piece of hose on
       linkage should be facing the firewall.) Se—             the vacuum fitting directly beilow the 1.S.S.
       cure the carburetors in place using the nuts            and connecting it to the 1.S.S. base.
       provided. Tighten each nut in small incre—              Use some clamps from the kit to secure the
       ments using a criss—cross pattern (/eft—                hose in place. (Fig. F)
       front, right—rear . . . ) Do Not Over Tighten
       Nuts.                                            23. Connect the distributor vacuum advance
                                                               hose to the port on the front carburetor.
17.    Install the carburetor linkage rods to the              NOTE: 1974 model vehicles should tee—in
       throttle operating rod. Do not connect them             the charcoal canister to this port.
       to the carburetors at this time. Connect the
       choke cables to the carburetors.                 24.    Before installing the air filter bases on the
                                                               carburetors, remove the knock out plugs
18.    Install the support bracket for the throttle            and install the elbow fittings. (Fig. G)
       operating rod where the Servo—Diaphragm
       was originally mounted. Use the original         25. Install the second vacuum delay valve from
        bolits from the diaphragm to secure the sup—           the kit in the vacuum line for the Anti—
       port bracket. (Fig. F)                                  Backfire Vaive. NOTE: Black Side of Delay
                                                               Valve Must Face Towards the Anti—Backfire
19.    1973—74 Vehicles: Reconnect the coolant                 Valve. (Fig. G).
       circulation system using the hose and
       clamps provided in the kit. Do Not Retfill the
       Radiator At This Time.
20.    Install the vacuum delay valve in the EGR
       vacuum hose. NOTE: The gold side of the
       delay valve must face towards the EGR
       Valve.

21.    Remove theplugs from the stock fuel lines
       and install the new fuel hoses to the carbu—
       retors using the clamps from the kit to
       secure them. A new fuel filter should be
       installed at this time.


                                                                                               SPARK ADVANCE
                                                                   ANTI—BACKFIRE VALVEQ‘\ A/   (1974 mopeLs must
                                                                                               TEE CHARCOAL
      SUPPORT              IDLE                         FIG.   G                rower    C     CANISTER TO THIS
      BRACKET MOUNTS       sPEED     EGR                                        BRAKES         PoRT}
      HERE                 SCREW    VALVE
                                            THROTTLE    26.    Install the Crankcase Vent, Air Pump, and
                                            OPERATING          Anti—Backfire Vaive hoses to the correct air
      MANIFOLD                                                 filter base location as shown in Fig. G. Bolt
      VACUUM                                                   the filter bases to the carburetors using the
                                                               hardware provided. Install the filters and
                                                               tops and secure them using the cap nuts
                                                               provided.

                                                               Refill the radiator and replace the radiator
                                                               cap.

                                                               Reconnect the battery and replace the gas
                                                               cap.
                                                               Turn "out" the idle speed screw on each
                                                               carburetor until the tip of the screw is flush
                                                               with casting (Fig. H). Check for binding or
                                                               sticking of the throttle plates (with the idie
                                                               speed screw turned out, the throttle plates
                                                               should be completely closed in the bores).
                                                               Correct any misalignment or binding
                                                               before proceeding.


            IDLE SPEED SCREW
                                                              39.   Check for adequate hood clearance before
                                                                    closing hood.

                                                              40.   Manual Choke Starting Procedure:
                                                                    Cold Start
                                                                    Pump the accelerator pedal 2 full times.
                                                                    Beginning with 2/3 choke lever travel, ad—
                                                                    just as needed to achieve proper cold start.
                                                                    Start engine. As soon as practical disen—
                                                                    gage choke lever.
                                 IDLE MIXTURE
                                    SCREW                           Hot Start
                                                                    Depress the accelerator pedal 1/2 way to
30. Turn "in" the idle speed screw until the tip                    the floor and hold at this point. Start
      of the screw just touches the carburetor                      engine. Choke should remain disengaged.
      lever. From this "contact" point turn the
      idle speed screw "in" one (1) full turn. Set
      each carburetor in this manner. This is
      your preliminary set point.                                   CARBURETOR
                                                                    SYNCHROMETER
31.   Install a Redline Syncrometer, or other relti—                An extraordinary—new
      able carburetor syncrometer, according to                     calibration instrument
      the manufacturer‘s directions.                                that even works on multi—
                                                                    barrel, progressive
32. Start the engine (CAUTION: Besureloose                          carburetors.
      throttle rods are not interfering with other                  EASY TO READ
      linkage components).                                          A large, easy to read face, numberically cali—
                                                                    brated in kilograms—per—hour delivers fast, preci—
33. To syncronize the carburetors, adjust each                      sion air flow measurement for all types of carbu—
      idle speed screw until a balanced reading                     retors, regardless of position.
      is obtained on the Syncrometer.
                                                                    SECRETS IN THE SLEEVE
      After the carburetors have been syncron—                      The secret to the success of Synchrometer is .
      ized, install the throttle linkage rods on the                rubber sleeve that fits directly into the carbure—
      carburetor levers. Ensure the carburetor                      tor air horn. You get a positive airtight seal. All
      levers have not moved from their preset                       incoming air must pass through the Synchrom—
      position. If the linkage rod tength is incor—                 eter. Best of all, special adapters let you service
      rect, loosen the right and left handed nuts                   irregular and multiple venturi carburetors.
      and turn the rod shaft to shorten or leng—                    TWO MODELS
      then as needed. When correctly adjusted                       Type $SK—primarily designed for small to
      the syncrometer reading will remain as                        medium displacement engines that flow a low
      originally set in step #33. When tuning is                    volume of air through the carburetor in a single
      complete lock the rod nuts in place.                          or multiple intake systems. Calibration range is:
                                                                    1 to 30 kg/h.                    Part No. STE SK
35. Adjust the idle speed to the Factory Speci—
      fied RPM by turning the idle speed screws
      in the appropriate direction. Turn each                                       SPECIAL ADAPTORS
      screw equally. Recheck the linkage rod                        All special adaptors are designed to fit tightly in
      position if screws are adjusted.                              the carburetor intakes. This feature allows you
                                                                    to have both hands free for tuning and makes
36. Using an infrared exhaust gas analyzer                          the use of multiple instruments possible.
      adjust the Idle mixture screws to obtain a                                    Model                 Adaptor
      reading of 2.0% + 0.3% with Air Injection.
                                                                           32736 DFAV Series             STE 49
37. Apply the "Tune—Up Specifications" decal                               32736 DGV Series              STE 40
                                                                           34 ICT                        STE 54+8
      supplied in the kit next to the original                             40 DCN                        STE 18
      "Tune—Up Specifications" decal.                                      40, 42, 44 DCNF               STE 118
                                                                           40, 44, 48 IDF                STE 118
38. Check for free throttle operation and cor—                             40, 42, 45, 48 DCOE           STE 118
                                                                           48 IDA                        STE 18
      rect, if necessary, before starting engine.                          50, 55 DCO/SP W/SK            STE 10
      Start engine and check for fuel and vacuum                           50, 55 DGO/SP W/BK            Not Rea‘d
      leaks.


      WEBER U.S.                                       3/85                                        445.86881N



Document Created: 2005-09-01 12:40:23
Document Modified: 2005-09-01 12:40:23

Previous E.O. D-133-2 | Previous E.O. D-132 | Next E.O. D-133-4 | Next E.O. D-134