Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on July 14, 1983.
As of Monday, August 26th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
32/34 DFT1972-1973 Datsun 610 1700cc, L-18 1973-1974 Datsun 710, 620 P/U 1700cc, L-18 1973-1976 Datsun 610 1952cc, L-20 1974-1976 Datsun 710, 620 P/U 1952cc, L-20BCDD disconnected and EGR delay valve installed

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-133
  • Executive Order 133 / D133
  • ARB # D-133
  • Executive Order No: D-133
  • C.A.R.B. No. D-133
  • Resolution D-133
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 PDF

D-133 Document:



                                                              {Page 1 of 2)

                                   State of California
                                   AIR RESOURCES BOARD

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


                      REDLINE, INC., A SUBSIDIARY OF IMPAC
                        WEBER CARBURETOR MODEL 32/34 DFT
                s

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—4§—5;

IT IS ORDERED AND RESOLVED:          That the installation of the Weber 32/34 DFT
carburetor manufactured by Weber Carburetor has been found not to reduce
the effectiveness of required motor vehicle poliution control devices and,
therefore, is exempt from the prohibitions of Section 27156 of the Veh1c1e
Code for the vehicles listed below:

         Year               Make          ~ Mode?            Engine Desc.

        72—73               Datsun          610              1700cc,   L—18
        73—74          ~—   Datsun          710              1700cc,   L—18
      = 73—74               Datsun          620 Pick—Up      1700cc,   L—18
        73—76               Datsun          610              1952cc,   L—20
        74—76               Datsun          mo               1952cc,   L—20
        74—76               Datsun          620 Pick—Up      1952cc,   L—20


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


REDLINE, INC.                            290           EXECUTIVE ORDER D—133
                                                       (Page 2 of 2)



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.

THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION,
APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESOURCES BOARD OF
ANY CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY
ALLEGED BENEFITS OF THE WEBER 32/34 DFT CARBURETOR.

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 poliution control device as a certified device
         which, in fact, is not a cert1f1ed 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.


Executed at El Monte, California, this 2 day of Ju               83.


                                                  7
                                         K. D. Drachand, Chief
                                         Mobile Source Control Division


           STATE OF CALIFORNIA

           AIR RESOURCES BOARD




     EVALUATION OF THE MODEL 32/34 DFT
 WEBER CARBURETOR FOR EXEMPTION FROM THE
PROHIBITIONS OF VEKHICLE CODE SECTION 27156




                JUNE, 1983


                    EVALUATION OF THE MODEL 32/34 DFT
                 WEBER CARBURETOR FOR EXEMPTION FROM THE
               PROHIBITIONS OF VEKHICLE CODE SECTION 27156




                                   by
                     Mobile Source Control Division
                           State of California
                           AIR RESOURCES BOARD
                           9528 Telstar Avenue
                           E1 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 model 32/34 DFT carburetor.   Comparative exhaust emission and

bench flow tests demonstrate that the aftermarket Weber carburetor model

32/34 DFT does not adversely affect emissions.   Based on the results of

the tests and the Board‘s evaluation of the model 32/34 DFT, the staff

recommends that the exemption be granted for the vehicles as requested.


                            CONTENTS

                                       Page Number

SUMMARY                                     i.

CONTENTS                                   11.

I.     INTRODUCTION                         1.
II.    CONCLUSIONS

III. RECOMMENDATIONS

IV¥.   DEVICE DESCRIPTION

¥.     EVALUATION PROGRAM

¥I.    DISCUSSION




                              11.


EVALUATION OF THE MODEL 32/34 DFT WEBER CARBURETOR FOR EXEMPTION FROM THE

PROHIBITIONS OF VEHICLE CODE SECTION 27156



1.    INTRODUCTION

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

Parts and Accessories Corporation (IMPAC), is a distributor of

Italian—made Weber Carburetors and has applied for exemption from the

prohibitions of Vehicle Code Section 27156 for a single aftermarket

carburetor designated as the Weber model 32/34 DFT.    Exemption is sought

as a replacement carburetor for the O.E.M. Hitachi 340 carburetor as

found on lTimited 1972—1976 Datsun (Nissan)} vehicles equipped with either

the L18 or L20 engines.
      This report describes the evaluation of the Weber 32/34 DFT

carburetor and its findings.

II.    CONCLUSIONS

      Comparative exhaust emission data submitted by the applicant

demonstrated that the Weber model 32/34 DFT carburetor has the same Tow

emission characteristics as that of a properly performing Hitachi 340

carburetor.    The applicant also submitted air flow curves of the model

32/34 DFT and its EGR flow curves to demonstrate that the Weber

aftermarket carburetor functions in a like manner as the Hitachi

counterpart.

      The Weber replacement carburetor is designed simply to replace the

existing carburetor without any modifications and the stock air cleaner

housing is retained.    The idle mixture screw has a lTimiting adjustment

cap to prevent tampering as does the OEM carburetor.


III. RECOMMENDATIONS

        Based on the submitted comparative data, the staff recommends that

Redline, Inc. be granted limited exemption from the prohibitions of

Vehicle Coae Section 27156 for the Weber aftermarket carburetor model

32/34 DFT for the years, make, and models listed below:

Years            _Make_                Models           Engine Description

72—73             Datsun         610                    1700 cc, L—18

73—74             Datsun         710                    1700 cc, L—18

73—74             Datsun        620 Pick—Up             1700 cc, L—18

73—76             Datsun         610                    1952 cc, L—20
74—76             Datsun         710                    1952 cc, L—20

74—76             Datsun        620 Pick—Up             1952 cc, L—20

IV.     DEVICE DESCRIPTION

        Both the Weber 32/34 DFT and Hitachi 340 carburetors are progressive

two—barrei down draft designs (see exploded view, Photo 1).       The main

differences between the carburetors are the manner in which the secondary

throttle is activated and the choke butterflies.       The Weber 32/34 DFT

uses a manually—operated secondary which starts to open after

approximately 40° of primary throttle opening and uses twin choke

butterflies, one for each venturi.       The Hitachi 340, however, uses a

vacuum operated secondary which can be opened after 50° of primary

throttle opening and the corresponding manifold vacuum and a single choke

butterfly only over the primary venturi.

      The Hitachi 340 uses a Boost Controlled Deceleration Device {BCDD)

to enrich the air/fuel mixture during decelerations.       However, when the

Weber 32/34 DFT is installed the BCDD and its controlling components are

no longer retained.


V.      EVALUATION PROGRAK

        The applicant performed comparative CVS—75 exhaust emission tests at

Import Certification Lab in Anaheim, California.         A 1976 Datsun 710

equipped with a L—20 (1952 cc) engine and four—speed manual transmission

was used.                                                                     v

        During the evaluation, testing was performed on both a prototype

carburetor and a representative production carburetor to show that the

exhaust emission levels would not be adversely affected by the Weber

32/34 DFT‘s use.     The baseline test with the Hitachi 340 carburetor was

performed to show that the. stock vehicle was in proper working order and

that emissions of the vehicle were within the applicable state standard

for the 1976 model—year.

        The applicant‘s submitted comparative exhaust emission and derived

fuel economy data is given in Table 1.

                                       Table 1

                       Applicant‘s Comparative Test Data

                        Exhaust Emissions gm/mi         Fuel Economy mi/gal
     Condition          HC       CO              NOx             City

Basel ine               0.8      4.6             2.2             18.8

Prototype Weber         0.8      8.9             1.9             19.1

Production Weber        0.9      4.8             1.8             19.4

Re—Run of                          .
Proquction Weber        0.9      5.1             1. 7            19.6

1976 P/C Std.          0.9       9.0             2.0               —

       The applicant also submitted comparative bench air flow data

(Graph 1) and comparative bench EGR flow data (Graph 2) for the Weber

32/34 DFT and Hitachi 340 carburetors.

       The Board did not perform confirmatory testing of the Weber 32/34

DFT for this evaluation.


VI.      DISCUSSION

       The applicant‘s submitted comparative emission and bench test data

is generally acceptable.     Although there are some differences in which

the two carburetors operate, the Weber 32/34 DFT does not seem to

adversely affect exhaust emissions.      The submitted emission test data

does not reveal any significant increases and the smail differences are

considered, by staff, to be within the lTimits of testing variability.

       The submitted bench flow data reveals that the Weber 32/34 DFT is

slightly Jeaner {1 A/F ratio) at W.0.T. than the Hitachi 340.      However,

since the change in A/F ratio is during the rich operation of the

carburetor, the change would not adversely affect NOx or HC emissions.

       The bench data also reveals a greater EGR port strength with the

Weber 32/34 DFT.      In order to prevent a driveability problem and possible

emission increases with the early induction of recycled exhaust gas, a

1.0 to 1.5 second ¢e1ay valve is installed in series between the

carburetor and the EGR valve.     The delay valve does not change the

strength of the signal but only prevents the EGR vaive from opening

early.     The staff plotted the EGR flow vs. port strength curves and found

them to be within 20%.     The emission data of the production carburetor

was performed with the delay valve installed.

       The absence of the BCDD on the Weber 32/34 DFT did not seem to

affect emissions even though the CVS—75 test contains more than twenty

acceleration and deceleration modes.

       Driveability was not evaluated during the testing of the Weber 32/34

DFT.     However, if driveability was adversely impaired, emissions would

have more than likely increased.


     Since the instaillation of the Weber 32/34 DFT is a simple

remove—and—replace arrangement and no special adapters, other than the

one for the air cleaner, are needed, the staff does not believe that

improper installation or tampering would be encouraged.   The idle mixture

screw is pre—adjusted and then sealed preventing the installer from

changing the proquction limits of the carburetor.

     Although the test data of the Weber 32/34 DFT reveals it to be

functionally similar with regard to emissions to the Hitachi 340, it

cannot be classified as an Aftermarket Replacement Part as differences

are found in the bench air flow data, the carburetor choke and power

circuits, and the absence of the BCDD system.


‘rgluse




               Weber 32/34 DFT
                                 Hatacht 340




          main popo{dx3
             1 oroud


                                   INSTALLATION INSTRUCTIONS
                                                                                                    Who.
                                                                                                    WEBER
                                                                                                    caneurerons



  READ & UNDERSTAND ALL STEPS OF THESE INSTRUCTIONS BEFORE
  BEGINNING THIS INSTALLATION. AFTER UNPACKING, EXAMINE THE
  CARBURETOR AND OTHER COMPONENTS FOR SHIPPING DAMAGE.


                DATSUN 610, 620, AND 710
                       1972 To 1976
                                 L18 and L20B Engines, All Transmissions
                               For Kit Nos. K 8640 and 52—50514 (Pickup)
                                      K8650 and 52—50512 (Sedan)

   TOOLS AND EQUIPMENT NEEDED                                              PARTS SUPPLIED WITH
                                                                            INSTALLATION KIT:

  Combination,        Box   or     Open—End    Wrenches                 1 — Weber 32/34 DFT CArburetor
  (metric)
  Socket Set with 12mm Socket                                           1 — Air Filter Adaptor
  Screwdrivers (regular and Phillips)
  Pliers                                                                1 — Fuel Line
  Gasket Scraper
  Wiping Rags                                                           1 — Hardware Kit
  Cleaning Solvent
  Knife
  Gasket Sealer

                                            TUNE—UP SPECIFICATIONS
‘ Al tune—up specifications for the Weber Carburetor remain the same as those specified
  by the Datsun Factory for the original unit. Emissions tune—up should be carried out
  by a suitably qualified Dealer or Independent garage, using infrared gas analyzing equip—
 ment.

 NOTE: Late model vehicles fitted with Emission Control Systems have many vacuum
 lines 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 source of each line.




         This   kit    is   sold    under    the   provisions   of   Califormia   Air   Resources   Board
         Executive      Order       No.   D—133    (C.A.R.B.     E.0.   No.   D—133).     Products with
         C.A.R.B. E.0. numbers are exempt from the prohibitions of Section 27156
         of the California Vehicle Code. Performance kits so noted are legal for
         use on public highways in California.

         C.A.R.B.       E.O.     No. D—133 is valid for Datsun: 610, 620, 710 (72—76) fitted
         with L18, or L20B engines.




 WEBER U.S.                                                                                                   Page 1


 PREPARATION FOR KIT INSTALLATION.
                                                                  CAM COVER
                                                                                         HOT AIR TUBE


 1.    Remove the vehicle gas cap.

 2.   Raise the hood              and   disconnect       the
 vehicle battery.

 3.     Remove the fuel line and clamps.

 4.   Remove the two air filter bracket
 bolts at the front of the air filter.

 5.  Disconnect the following lines from
 the air filter. Identify removed lines
                                                               GULP VALVE                       AIR Pump
 to aid in reassembly.    See figure   1.
                                                                    EVAPORATIVE
                                                                    CANISTER

       a.   Gulp Valve                                                        MANIFOLD VACUUM
       b.   Cam Cover
       c.   Hot Air Tube
       d.   Air Pump                                                          Figure 1
       e.   Manifold Vacuum
       f.   Evaporative Canister
                                                               EGR VACUUM                   BCDD VACUUM




 6.    Remove         the   air     filter      from     the
 vehicle.

 7.   Disconnect the following carburetor
 lines and wires. Identify removed lines
 and wires to aid in reassembly. See
 figure 2.

       a. EGR (Exhaust Gas Recirculation})
          Vacuum
       b. BCDD      (Boost Control                  Deceler—
          ation Device) Vacuum
       c. Red Anti—Dieseling,                Idle    Cutoff
          Solenoid Wire
       d. Blue Choke Wire
                                                                     HIGH ALT. VAC. LINES
       e. White BCDD Wire
       f. Vacuum        Advance         to     Distributor                    WHITE BCDD WIRE
                                                               vACUUM ADVANCE           BLUE WIRE
 NOTE: Some vehicles have altitude com—                        TO DISTRIBUTOR                 RED WIRE
 pensation devices which have two (2)
 vacuum       lines    connecting       the     carburetor
                                                                              Figure 2
 with a unit mounted on— the left inner
 fender, behind the BCDD unit. These
 lines may be discarded. See figures 2                         8.   Remove cotter pin, spring, and wash—
 and 3. The BCDD electrical wire will                          er    from the carburetor linkage arm.
 not be used on the Weber Carburetor                           On vehicles with cable throttle linkage,
 and should be disconnected and discarded.                     remove the cable from the throttle quad—
                                                               rant.



Page    2


9.   Remove carburetor flange nuts and
lift carburetor and flange gasket from
the intake manifold.

10. Remove the four                   flange      studs    from
the intake manifold.

 NOTE: Flange studs are removed with
 a stud removal/installation tool or by
 a     double—nut     procedure.           (Two    nuts     are
 threaded on stud to be removed and
 locked tightly together. The stud can
 then be unscrewed from the manifold).

11. After the flange studs                   are removed,
clean the manifold face.

KIT INSTALLATION.

12. Use  stud   removal/installation tool
or the double—nut procedure and install
the new flange studs supplied in the
kit, in the manifold flange.

13. Install the smaller of the two gaskets
supplied on the manifold flange.

14. Install the plastic <insulator block,
supplied in kit, on the manifold. Place
the remaining gasket on the insulator
block.


NOTE: The insulator block has a tapered
hole which must match the original man—
ifold    at   the    bottom,         and   the    carburetor
at the top.

15. Remove one—way air valve and hose.
Fit spacer and threaded adaptor as shown
in figure 4. Shorten the air hose 1—1/2
inches. Refit hose and valve assembly
as shown. If necessary, reposition air
valve for clearance with choke solenoid.

16. Install Weber carburetor on manifold
with choke assembly toward the front
of the vehicle. See figure 5.

17. Secure carburetor with flange                          nuts        SPACER   ONE—WAY AIR VALVE
and washers supplied in the kit.
                                                                  NOTE: THIS ILLUSTRATIGN SHOWS THE
                                                                        WEBER CARBURETOR INSTALLED.
18. Reconnect             throttle    arm      with    cotter
pin,    spring,     and    washer      removed        in   step
No. 8. On vehicles with                    cable throttle                       Figure 4
linkage, connect cable to                  throttle quad—
rant on Weber carburetor.


                                                                                                    Page 3


 19. Reconnect           blue electric choke wire
 and red idle            cutoff solenoid wire to
 corresponding        units    on        the    Weber             carb—
 uretor.    See figure 6.

 20. Connect the fue!l hose supplied in
 the kit from the stock Datsun fuel outlet
 to fuel inlet on the Weber carburetor.
 Secure hose with clamps supplied. See
 figure 6.

 21. Counect the EGR and Vacuum Ad—
 vance lines with the EGR line nearest
 the firewall and the Vacuum Advance
 line toward the front of the vehicle.
 See figure 6.

 22. Install       the    black      and        gold       vacuum
 delay     valve    supplied        in    the        kit     in     the
 vacuum     line that  connects the EGR                                                          Figure 5
 valve to the thermal switch. Install the
 vacuum delay valve by cutting a 1/2—
                                                                           IDLE CUTOFF SOLENOTD                  CHOKE
 inch piece out of the vacuum line and
 installing the delay valve in the line.
 Install the delay vaive with the black
 side toward the thermal switch and the
 gold side toward the EGR vaive.

 23. Reconnect   the lines  removed   in
 steps Sa through 5f to the air cleaner.
 See figure 1.


 24. Install the air cleaner adaptor and                                    FUEL
 air cleaner with the two oval air filter                                   INLET
 spacers     supplied     and       the        two     air        filter                                                  vAcuum
 bracket bolts removed in step 4.                                                 FUEL HOSE                               ADVANCE
                                                                                                                          LINE
 25. Tighten the two                 bracket           bolts         to                                      STOCK
 secure the air filter.                                                                    EGR LINE          FUEL
                                                                                                             ouTLET
 26. Reconnect the vehicle battery.
                                                                                                 Figure 6
 27. Depress   the   throttle  fully,  then
 release to initiate the cold—start device.

 28. START THE ENGINE. After warmup                                        at     Weber     factory.     Refer       to      Tune—Up
 check for leaks around the carburetor                                     Specifications on page 1.
 mounting      base      and correct            as    necessary.
 With engine idling, use a spray can of                                    30. CHECK             FOR   ADEQUATE HOOD
 carburetor cleaner with hose attachment                                   CLEARANCE             BEFORE CLOSING   THE
 to isolate a leak. Spray cleaner around                                   HOOD.
 carburetor   mounting   base.  If any of
 the spray is entering the induction sys—                                  NOTE:     If     difficulties     arise    during      kit
 tem, the idle speed will change.                                          installation         WEBER U.S.            will     make
                                                                           every effort to provide needed assistance.
 29. Check idle speed and adjust as nec—                                   Contact        our    technical     liaison        through
 essary to 750 rpm. Idle mixture is preset                                 your      distributor       for    this        assistance.


                                                                                wWEBER U.S.                               445.8650.IN
Page 4



Document Created: 2005-09-01 12:44:49
Document Modified: 2005-09-01 12:44:49

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