Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on March 30, 1984.
As of Sunday, December 9th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
32/34 DFT 9A1978-1979 Datsun 510 1952cc, L-20 1977-1979 Datsun 620 P/U, 200 SX 1952cc, L-20 1979-1980 Datsun 720 P/U 1952cc, L-20 1977 Datsun 710 1952cc, L-20BCDD disconnected

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-133-1
  • Executive Order 133-1 / D133-1
  • ARB # D-133-1
  • Executive Order No: D-133-1
  • C.A.R.B. No. D-133-1
  • Resolution D-133-1
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-133-1 PDF

D-133-1 Document:



                                                            (Page 1 of 2)

                                 tate of California
                                AIR RESOURCES BOARD

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


                    REDLINE, INC., A SUBSIDIARY OF IMPAC
                     WEBER CARBURETOR MODEL 32/34 DFT 9A


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 IS ORDERED AND RESOLYED: That the installation of the Weber 32/34 DFT
SA carburetor manufactured by Weber Carburetor has been found not to reduce
the effectfveness of required motor vehicle pollution control devices and,
therefore, is exempt from the prohibitions of Section 27156 of the Yehicle
Code for the vehicles lTisted below:

         Year          Make             Model              Engine Desc.

         78—79         Datsun           510                1952cc, L—20
         77—179        Datsun           620 Pick—Up   °_   1952ee, L—20
         79—80         Datsun           720 Pick—Up        1952cc, L—20
         77            Datsun           710                1952c¢, L—20
         77—79         Datsun           200 SX             1952c¢c, L—20


The original equipment Boost Controlled Deceleration Device {BCDD) is
removed and not replaced with the installation of the Weber 32/34 DFT 9A
carburetor.                                          ‘
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 poliution 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 pricr
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.                                          EXECUTIVE ORDER D—133—1
                                                       (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 9A 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 43544 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 pollution 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.


Executed at El Monte, California, this    2251   day of March, 1984.


                                         uns
                                         K. D. Drachand, Chief
                                         Mobile Source Division


           STATE OF CALIFORNIA
           AIR RESQURCES BOARD




    EVALUATION OF THE MODEL 32/34 DFT 9A
  WEBER CARBURETOR FOR EXEMPTION FROM THE
PROHIBITIONS OF VEHICLE CODE SECTION 27156
 IN ACCORDANCE WITH SECTION 2222, TITLE 13
   OF THE CALIFORNIA ADMINISTRATIVE CODE




               MARCH, 1984


                   EVALUATION OF THE MODEL 32/34 DFT 9A
                 WEBER CARBURETOR FOR EXEMPTION FROM THE
               PROHIBITIONS OF VEKHICLE CODE SECTION 27156
                IN ACCORDANCE WITH SECTION 2222, TITLE 13
                  OF THE CALIFORNIA ADMINISTRATIVE CODE




                                   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 9A carburetor.      Changes to the previously

exempted model 32/34 DFT carburetor include different jetting to match

the aftermarket carburetor with that of the original equipment Hitachi

340 carburetor found on Timited 1977 to 1980 Datsun vehicles.

     Comparative exhaust emission and bench flow tests demonstrate that

the aftermarket Weber carburetor model 32/34 DFT 9A does not adversely

affect emissions.   Based on the results of the tests and the Board‘s

evaluation of the model 32/34 DFT 9A, the staff recommends that the
exemption be granted for the vehicles as requested.


                           contents
                                      Page Number
SUMMARY                                    i.
CONTENTS                                  11.
I.    INTRODUCTION

II.    CONCLUSIONS

III. RECOMMENDATIONS




                                          No
                                           +
IV.   DEVICE DESCRIPTION




                                          No
                                           »
V.    EVALUATION PROGRAM




                                          to
                                           ®
VI.   DISCUSSION




                                          j=
                                           &
APPENDICES

      Photo 1

      Graph 1




                            11.


EVALUATION OF THE MODEL 32/34 DFT 9A WEBER CARBURETOR FOR EXEMPTION FROM
THE PROKIBITIONS OF YEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION
2222, TITLE 13 OF THE CALIFORNIA ADMINISTRATIVE CODE

I.    INTRODUCTION

      RedTine, 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 mode] 32/34 DFT 9A.    Exemption is

sought as an exchange carburetor for the original equipment (0.E.)

Hitachi 340 carburetor as found on limited 1977—1980 Datsun (Nissan)
vehicles equipped with the L—20 engines.

      This report describes the evaluation of the Weber 32/34 DFT 9A

carburetor and its findings.

II.   CONCLUSIONS

      Comparative exhaust emission data submitted by the applicant

demonstrated that the Weber mode] 32/34 DFT 9A carburetor has the same
Tow emission characteristic as that of a properly performing Hitachi 340

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

32/34 DFT 9A to demonstrate that the Weber aftermarket carburetor

functions in a like manner as to similar Hitachi counterparts.

      The Weber replacement carburetor is designed to match the flow

characteristics of Tater model Hitachi 340 carburetors.   Weber 32/34 DFT

9A carburetors simply exchange the existing carburetor without any

modifications and the stock air cleaner housing is retained.     The idle

mixture screw has a Timiting adjustment cap to prevent tampering as does |

the O.E. carburetor.


111. RECOMMENDATIONS

        Based on the submitted comparative data of the Weber carburetor, the

staff recommends that Redline, Inc. be granted exemption from the

prohibitions of Vehicle Code Section 27156 for the Weber aftermarket

carburetor model 32/34 DFT 9A for the years, make, and models of vehicles

listed below:

Year(s)          _Make_                Models            Engine Description
78—79             Datsun         510                     1952 cc, L—20

77—79             Datsun         620 Pick—Up             1952 cc, L—20
79—80             Datsun         720 Pick—Up             1952 cc, L—20

77                Datsun         710                     1952 cc, L—20

77—79             Datsun         200 SX                  1952 cc, L—20

IV.     DEVICE DESCRIPTION

        Both the Weber 32/34 DFT 9A and Hitachi 340 carburetors are

progressive two—barrel 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 9A uses a manually—operated secondary which starts to open

after approximately 40° of primary throttle opening and uses twin choke

butterfTies, 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 9A is installed the BCDD and its controlling components

are no Tonger retained.


        The Weber 32/34 DFT 9A includes several changes from the previously

exempted 32/34 DFT model.      The new model has larger primary and

accelerator pump jets and two EGR ports {instead of one) are used.              The

power circuit remains unchanged from the previously exempted 32/34 DFT.

The changes allow a closer air and fuel flow characteristic to that of

lTater mode] Hitachi 340 carburetors.

V.      EVALUATION PROGRAM

        The applicant performed comparative CVS—75 exhaust emission tests at

Import Certification Lab in Anaheim, California.           A 1980 Datsun 720 P—U

equipped with a L—20 (1952 cc) engine and automatic transmission was used.

        During the evaluation, testing was performed on a representative

production carburetor to show that the exhaust emission levels would not

be adversely affected by the Weber 32/34 DFT 9A‘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 1980 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 >

Baseline                0.2      4.1             1.1               22.0
  (Ave 2 Tests)

Production Weber        0.2      2.7             1.0               22.2

1980 Light—Duty         0.41     9.0             1.5(1)              —
     Truck Std.

(1)2.0 gu/mi for four—whee! drive vehicles


      The applicant also submitted comparative bench air flow data
(Graph 1) for the Weber 32/34 DFT 9A and Hitachi 340 carburetors.     For

comparative purposes the curve for the previously exempted Weber

carburetor was plotted also.

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

DFT 9A for this evaluation.

VI.   DISCUSSION

      The applicant‘s submitted comparative emission and bench test data

is generally acceptable.    ATthougļ¬ there are some differences in which

the two carburetors operate, the Weber 32/34 DFT 9A does not seem to

adversely affect exhaust emissions.    The submitted emission test data

showed no significant increases and the small differences are considered,

by staff, to be within the limits of testing variability.

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

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

deceleration modes.    Additionally, since NOx emissions did not increase,

the staff did not feel that the operation of the EGR system was adversely

affected with the suction change resulting from the twin ports machined

into the exchange carburetor.   The applicant explained that two EGR ports

were used on the exchange carburetor since the 0. E. carburetor also

contained two ports.

      The NOx emission standards for the model—years 1977—1980 were

reduced from 2.0 gm/mi to 1.5 gm/mi requiring changes to the NOx
controlling components and/or their subsystems.


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

DFT 9A.    However, if driveability was adversely impaired, emissions would

have more than Tikely increased.

       Since the installation of the Weber 32/34 DFT 9A 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 anticipated.    The idle

mixture screw is pre—adjusted and then sealed by Redline preventing the

installer from changing the produétion limits of the carburetor.

       Although the test data of the Weber 32/34 DFT 9A reveals it to be

functionally similar with regard to emissions to the later models of 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.

       The Weber 32/34 DFT 9A carburetor is packaged in three separate kits
ijdentified as kits 8654, 8660 and 8666.   The same carburetor is used in

each kit, however, the connective throttle arrangements differ to

facilitate various configuration found on vehicle models being applied

for.    Additionally, some kits include a thicker insulator gasket to match

that of the O.E. application.


                                        Photo 1
                                     Exploded View
Hatachi 340




                                          Weber 32/34 DFT
              A
              :i




                  tpgnTas Weree. /
                   €22Z5CC
                        hym ns tea
              &


                        INSTALLATION INSTRUCTIONS
                                                                                     .
                                                                                     ym
                                                                                     cansuaerons

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


                 DATSUN 510, 610, 620,
                   710, 720 & 200 SX
                                   1977 TO 1980
                        L20B Engines, All Transmissions
                  For Kit Nos. K 8654 and 52—50515 (1977 &10)
             K8660 and 52—50507 (°‘77—‘79 620 and 200 SX; ‘78—‘79 510)
                        K8666 and 52—50516 (‘79—‘80 720)

 T OLS AND EQUIPMENT NEEDED                                     PARTS SUPPLIED WITH
                                                                 INSTALLATION KIT:

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




 Cleaning Solvent
 Knife
 Gasket Sealer

                                TUNE—UP SPECIFICATIONS


All 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 equipment.
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 and wires be identified with a corresponding number tag or label system. To establish
function, locate and identify the source of each line and wire.                               '


This kit is sold under the provisions of California Air Resources Board Executive Order
No. D—133—1 (C.A.R.B. E.0. No. D—133—1). Products with C.A.RB. E.O. 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.RB. E.O. No. D—133—1 is valid for Datsun: 510, 610, 620, 710, 720, 2005X (1977—1980) fitted
with L20B engines.


WEBER U.S.                                                                                  Page 1


PREPARATION FOR KIT INSTALLATION.
                                                       CAM COVER                 HOT AIR TUSE

1.       Remove the vehicle gas cap.

2.       Raise the hood and disconnect the
vehicle battery.

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

4. Disconnect the following lines from the
air filter. Identify removed lines to aid in
reassembly. See figure 1.

                                                       GULP VALVE
                  Gulp Valve                               EVAPORATIVE
     mp arp gop




                  Cam Cover                                CANISTER
                  Air Pump
                                                               MANIFOLD VACUUM
                  Hot Air Tube
                  Manifold Vacuum
                  Evaporative Canister
                                                                     Figure 1


                                                      EGR vACUUM                  BCDD vacuum
5.        Remove the air filter from the vehicle.

6. 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
                  Vacuum Advance to Distributor
     p poon 5




                  BCDD (Boost Control Deceleration
                  Device) Vacuum
                  Blue Choke Wire
                  Red Anti—Dieseling Idle Cutoff
                  Solenoid Wire
                  White BCDD Wire
       pn




7.        Remove the fuel line and clamps.
                                                           HIGH ALT. VAC. LINES
                                                                     WHITE BCDO
NOTES:                   .
                                                                                  BLUE WIRE
   +   Some vehicles have altitude com—               VACUUM_ADVANCE
pensation devices which have two (2)                  10 DISTRIBUTOR                 RED WIRE
vacuum lines connecting the carburetor with
a unit mounted on the left inner fender,
behind the BCDD unit. These lines may be                              Figure 2
discarded. See figures 2 and 3. The BCDD
electrical wire will not be used on the Weber             &    On trucks with the BCDD mounted
Carburetor and should be disconnected and            on left fender, the hose must be eliminated
discarded.                                           and the unit capped with vacuum caps
                                                     supplied in kit


 Page 2


8.   Remove cotter pin, spring and washer
from the carburetor linkage arm. On vehicles
with cable throttle linkage, remove the cable
from the throttle quadrant.

9. Remove carburetor flange nuts. Lift
carburetor and gasket from the manifold.

10. Remove the four flange studs from the
manifold, except on 720 pickups where
original studs are used.

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.
                                                                                  BCDD UNIT
12. With exception of 720 pickups where
original studs are used, install the new flange
studs supplied in kit into the manifold                             Figure 3
flange.

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

14. Install the insulator/spacer, supplied in
kit on the manifold.    Place the remaining
gasket on the insulator/spacer.

NOTE: The insulator/spacer has a tapered
hole which must match the original manifold
at the bottom, and the carburetor at the top.

15. Remove one—wayair valveand hose. Fit
spacer and threaded adaptor as shown in
figure 4. Shorten the air hose 1—1/2 inches."            SPACER       ONE—WAY AIR VALVE
Refit hose and valve assembly as shown. If
necessary, reposition air valve for clearance        NOTE: THIS ILLUSTRATION SHOWS THE
with choke solenoid.                                       WEBER CARBURETOR INSTALLED.

16. Install Weber carburetor on manifold
with choke assembly toward the front of the
vehicle. See figure 5.                                              Figure 4

17. Secure carburetor with flange nuts and
washers supplied in the kit.                      throttle quadrant on Weber carburetor.

18. Reconnect throttle arm with cotter pin        19. Reconnect blue electric choke wire and
and washer removed in step 8. On vehicles         ‘red idle—cutoff solenoid wire to corresponding
with cable throttle linkage, connect cable to      units on the Weber carburetor. See figure 6.

                                                                                         Page 3


20. Connect the fuel 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. Connect the EGR and Vacuum Advance
lines with the EGR line nearest the firewall
and the Vacuum Advance line toward the
front of the vehicle      See figure 6.   On
vehicles with charcoal canister the line
labeled "Dist. Vacuum" must be connected
to the Vacuum Advance line using the Tee
fitting supplied.

22. Install the black and gold vacuum delay
valve supplied, in the vacuum line that
connects the EGR valve to the thermal
switch by cutting 1/2 inch from center of
hose and inserting delay valve with black                           Figure 5
side toward the EGR valve. On vehicles that
have a stock black and brown delay valve,
install the delay valve supplied with black
                                                 FUEL HOSE
side toward the thermal switch and gold side
toward the stock delay valve (brown side).
Black side of stock delay valve is connected
to the EGR valve. See figure 7.

23. Install the air cleaner adaptor and air
cleaner with the two oval air filter spacers
and bolts supplied, and the two air filter
bracket bolts removed in step 3.
                                                 WEBER
24. Reconnect the lines removed in step 4,       FUEL
                                                 INLET
to the air cleaner (Fig. 1).                             IDLE
                                                         CUTOFF
                                                         SOLENGID
25. Reconnect the vehicle battery.                                     STOCK        ADVANCE
                                                                       FUEL          INE
                                                           EGR LINE    auTLet
26. Depress the throttle fully, then release
to initiate the cold—start device.
                                                                    Figure 6
27. START THE ENGINE. After warm—up,
check for leaks around the carburetor mount—
ing base and correct as needed.                  fHERNGSTRT HOUSING             BROWN   BLACK
                                                                        GOLD
28. Check idle speed and adjust as necessary             FROM CARB.
to 750 rpm. Idle mixture is preset at Weber
factory.

29. CHECK FOR ADEQUATE HOOD
CLEARANCE BEFORE CLOSING THE
HOOD.

NOTE:      If difficulties arise during kit                   DELAY VALVE               VALVE
installation, WEBER U.S. willmake every          THERMAL SWITCH
effort to provide needed assistance. Contact
our technical liaison through your distributor
for this assistance.                                                Figure 7


Page 4                                           WEBER U.S.                       445.8660.1N



Document Created: 2005-09-01 12:42:16
Document Modified: 2005-09-01 12:42:16

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