Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on October 11, 1985.
As of Thursday, September 19th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1982-1985 Chevrolet, Buick, Pontiac, and Oldsmobile 2.5L 1983-1985 Chevrolet, Cadillac, and Oldsmobile 2.0L 1982-1985 Buick, Pontiac, and Oldsmobile 1.8L

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-115-2
  • Executive Order 115-2 / D115-2
  • ARB # D-115-2
  • Executive Order No: D-115-2
  • C.A.R.B. No. D-115-2
  • Resolution D-115-2
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-115-2 PDF

D-115-2 Document:



                                                                (Page 1 of 2)

                                      State of California
                                      AIR RESOURCES BOARD

                                    EXECUTIVE ORDER D—115—2
                        Relating to Exemptions under Section 27156
                                   ‘of the Vehicle Code


                              HQOLLEY REPLACEMENT PARTS DIVISION
                               COLT INDUSTRIES OPERATING CORP.
                                THROTTLE BODY INJECTION SYSTEM
                             FOR GM 1.8L, 2.0L, AND 2.5L ENGINES


Pursuant to the authority vested in the Air Resources Board by Section 27156
 24      Yhsb ie3    An         F
or tne   YEnTcie     C008,   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 Holley throttle body
injection system, model 3739, manufactured by Holley Replacement Parts
Division, Colt Industries Operating Corporation, of 11955 East Nine Mile Road,
Warren, Michigan 48090, has been found 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 following
General Motors (GM) Corporation vehicles originally equipped with throttle
body injection system:                 ‘      7

Model Year                          Vehicle Make                   Engine Displacement

1982— 1985          Chevrolet, Buick, Pontiac, and Oldsmobile               2. 5L
1983—1985           Chevrolet, Cadillac, and Oldsmobile                     2.0L
1982—1985           Buick, Pontiac, and Oldsmobile          '               1.8L

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.


HOLLEY REPLACEMENT PARTS DIVISION            |            EXECUTIVE ORDER D—115—2
                                                          (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 HOLLEY THROTTLE BODY INJECTION SYSTEM, MODEL 3739.

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 fqllows:

    "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 E1 Monte, California, this
                                       is    Uj 4*~ day   of October, 1985.

                                                 4sl
                                            4 )/(//’,/’", 4/1s ~~
                                            K. D. Drachand, Chief
                                            Mobile Source Division


                           STATE OF CALIFORNIA   >   —   —
                           AIR RESQURCES BOARD




EVALUATION OF COLT INDUSTRIES HOLLEY THROTTLE BODY INJECTION SYSTEM MODEL
3739 FOR EXEMPTION FROM THE PROHIBITIONS IN SECTION 27156 OF THE VEKHICLE
CODE IN ACCORDANCE WITH SECTION 2222, TITLE 13 OF THE CALIFORNIA
ADMINISTRATIVE CODE




                             OCTOBER, 1985


EVALUATION OF COLT INDUSTRIES HOLLEY THROTTLE B0DY INJECTION SYSTEM MODEL
3739 FOR EXEMPTION FROM THE PROKIBITIONS IN SECTION 27156 OF THE VEKHICLE
CODE 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 commercial products
constitute endorsement or recommendation for use.)


                                 summagy

      The Holley Replacement Parts Division (Holley) of Colt Industries

Operation Corporation has requested an exemption from the prohibitions in

Vehicle Code Section 27156 for their throttle body injection (TBI) system

model 3739.   The exemption is sought for limited 1982 through 1985

General Motors (GM) Corporation vehicles originally equipped with TBI

system.

      Holley has submitted data from comparative cold—=start CVS—75

emissions tests performed at their own test facility.   Their tests were

performed on a 50—state certified 1985 Oldsmobile Ciera with a 2.5 liter

six—cylinder engine.   Confirmatory tests were conducted on a

California—certified 1985 Oldsmobile Firenza powered by a 2.0 liter

engine at the Air Resources Board (ARB) Haagen—Smit Laboratory in El1

Monte, California.

      Based on the comparative exhaust emission data, the staff has

concluded that Holley has demonstrated compliance with the requirements

for the exemption.

      The staff recommends that Holley be granted an exemption for their

TBI system model 3739 as requested and that Executive Order D—115—2 be

issued.


                           LL
     LL                           vIVO IS3L S$.88¥     :E 378¥L
    OL                          wIYG LS3L SA3770H      ‘2 278VL
                     MOLJICNI U30NIWWODT4 AI170H       ‘L 378VL
                                                NOLIICNI W30
                       WyHIVIQ DILYWIHIS WILSAS IdL AI170H
                                                          S3910N3dd¥
                                                     NOISSNISIQ   ‘IA

    oost
                                NOLLYATYA3 WILSAS I8L AI770H        *A



    st
               NollVs3d0 GNW Nofldi¥os3G WilSAs IdL A4770H         ‘AlI



    oo
                                            SNOTILVGN3WWOJ384 *II1




    &b
                                                 NoISNnToNOJ       ‘I1I
                                               NOIL3NGOrINI          ‘I
  l                                                         ‘SIN3LNO3.
     L                                                       AHYWANS
Jaquiny abeg
                       SLNILNOY


EVALUATION OF COLT INDUSTRIES HOLLEY THROTTLE BODY INJECTION SYSTEM MODEL
3739 FOR EXEMPTION FROM THE PROHIBITIONS IN SECTION 27156 OF THE VEHICLE
CODE IN ACCORDANCE WITH SECTIQN 2222, TITLE 13 OF THE CALIFORNIA
ADMINISTRATIVE CODE


I.       INTRODUCTION

         The Holley Replacement Parts Division (Holley) of Colt Industries

Operation Corporation, 11955 East Nine Mile Road, Warren, Michigan 48090,

has requested an exemption from the prohibitions of Vehicle Code Section

27156 for their throttle body injection (TBI) system model 3739.           The

exemption is sought for the limited 1982 through 1985 General Motors {GM)
Corporation vehicles originally equipped with TBI system:

      Model—Years              Vehicle Makes                         Engine Size

      1982—1985         Chevrolet, Buick, Pontiac and Oldsmobite        2,5L

      1983— 1985        Chevrolet, Cadillac, and Oldsmobile             2.0L

      1982—1985         Buick, Pontiac, and Oldsmobile                  1. 8L

         Holley has submitted data from comparative cold—start CVS—75

emissions tests performed at their own test facility.         Their tests were

performed on a 50—state certified 1985 Oldsmobile Ciera with a 2.5 liter

six—cylinder engine.        Confirmatory tests were conducted on a

California—certified 1985 Oldsmobile Firenza powered by a 2.0 liter

engine at the Air Resources Board (ARB) Haagen—Smit Laboratory in El

Monte, California.

II.       CONCLUSION

         Based on the comparative exhaust emission data submitted by Holley

and the results of the confirmatory tests performed at the ARB test

facility, the staff has concluded that Holley has demonstrated compliance

with the requirements for the exemption as per ARS adopted "Criteria for

Evaluation of Add—On Parts and Modified Parts".


111.    RECOMMENDATIONS

        The staff recommends that Holley be granted an exemption for their

TBI system model 3739 as requested and that Executive Order D—115—2 be

issued.

IV.       HOLLEY TBI SYSTEM DESCRIPTION AND OPERATION

        The Holley TBI system model 3739 is designed to be an economical

bolt on replacement TBI! system for limited 1982 through 1985 model—year

GM vehicles originally equipped with TBI.      Installation instructions and

mounting hardware are packaged with the Holley TBI.

        The Holley TBI system is an electronic injector fuel metering

system similar to the OEM TBI.     It is aided by the electronic control

module (computer) to determine the correct amount of fuel to be

injected.     There are two major assemblies within the TBI:   (1) a throttle

body with a valve to control air flow; and (2) a fuel body assembly with

an integral pressure requlator and fuel injector to supply the required

fuel.     An electronically operated idle air control device to control idle

speed and a throttle position sensor to provide information regarding

throttle valve position are part of the TBI system.

        Filtered fuel is supplied by a tank mounted fuel pump to the TBI

unit positioned on the engine intake manifold.      As it enters the TBI

unit, the fuel is channeled directly to the injector where it is either

discharged into the throttle body or is directed through a pressure

regulator and back to the vehicle fuel tank;      The injector and the

regulator are mounted in the fuel body casting positioned directly above

the throttle body bore.


         The fuel injector is a solenoid operated device controlled by the

computer.     The incoming fuel is directed to the lower end of the injector

assembly which has a fine screen filter surrounding the injector inlet.

The computer actuates the solenoid which lifts a normally closed ball

valve off a seat.     The fuel under pressure is injected in a conical spray

pattern at the walls of the throttle body‘bore above the throttle valve.

         The fuel pressure regulator is a diaphragm—operated relief valve

with injector pressure on one side and air cleaner pressure on the

other.     The function of the regulator is to maintain a constant pressure

drop across the injector throughout the operating load and speed range of

the engine.

         The throttle position sensor is attached to the side of the TBI

unit and is mechanically actuated by the throttle shaft.     It is a rotary

potentiometer that provides a voltage which is a function of throttle

angle and enables the computer to read throttle position and, therefore,

can be used as part of the fuel, spark timing and idle speed control

systems logic.

         Also mounted on the throttle body portion of the TBI unit is a

stepper motor for managing engine speeds in the idle range in response to

coolant temperatures, driving modes, transmission gear and the many

variable loads such as those exerted by air conditioning compressor and

power steering pump.     The stepper motor moves a tapered pintle in an

orifice to vary the amount of air that bypasses the throttle valve.        Its

position under any given set of conditions is controlled by variable

power pulses supplied by the computer.


      In order to accomodate the three engine sizes (1.8L, 2.0L and 2.5L)

for which exemption is requested, Holley has designed the TBI system with

two different injectors.     Shown in Table 1 of the Appendices are the

recommended injector usage for the various engine displacements.

      A schematic diagram of the Holley TBI showing fuel flow path, and

an OEM injector are shown in the Appendices.

V.    HOLLEY TBI SYSTEM EVALUATION

      Evaluation of the Holley TBI system consisted of comparative

exhaust emission tests, using the cold—start CVS—75 test procedures, as

per adopted "Criteria for Evaluation of Add—On Parts and Modified Parts".

      Comparative tests were performed by both Holley and ARB.     Holley

tests were performed on a 1985 Oldsmobile Ciera powered by a 2.5 liter

engine at their own test facility.     Confirmatory tests performed at the

ARB were performed on a 1985 Oldsmobile Firenza pwered by a 2.0 liter

engine.

      A summary of the test results is shown in the Appendices.

Vi.   DISCUSSION

      Holley‘s exhaust emission test data are summarized in Table 2 of

the Appendices.    The data indicate that the Holley TBI model 3739 when

installed on a 2.5 liter engine and using an injector calibrated to flow

64 lbs./hr of fuel at 12 psi will not cause an adverse affect on the

vehicle‘s exhaust emissions.

      In addition to Holley‘s tests, the ARB performed confirmatory tests

on a 2.0 liter engine.     The results of the evaluation are summarized in

Table 3 of the Appendices.     Holley initially designed théir TBI system

for installation on a 2.0 liter engine using an injector calibrated to

flow 64 lbs./hr of fuel.     Results of this calibration (denoted with


superscript 1 on the table) resulted in a significant increase in carbon

monoxide (CO) emissions.   In order to rectify the problem, Holley

redesigned the TBI system for leaner operation by installing an injector

fiowing 46 lbs./hr.   This change in injector caused an increase in oxides

of nitrogen (NOx) emissions as compared to the OEM TBI (denoted with

superscript 2 on the table).   A second go—around of tests using an

injector calibrated for 52 lbs./hr of fuel also resulted in increased CO

emissions (denoted with superscript 3 on the table).   A third go—around

of tests using an injector calibrated to flow 50 lbs./hr of fuel resulted

in emission levels comparable to the OEM system (denoted with superscript

4 on the table).

      The changes in injectors for the various fuel flow calibrations did

not cause any driveability problems during the chassis dynamometer

emission tests nor on the road tests.


APPENDICES


                                (nouloarni Ado@ 31L10HH1 A37704)
                                DLIYVWN3HDIS ONIH3L3W 1304
                                                                          #OSN3S
                                                                NOLISOd 3711089H1
                                   3M¥A 710%1N0)    HIV 310!1
                              (@3#347!3) Ni HIV U:E
                       _                       \\
(d Ang 71304 WOW4)
       137M 7304                        z7778                                       S1HOd WNNIWVA   TYDIdAL    m
            nwL 1304 OD | _ G—*                 \
             nyNL3Y T3N4        T
  BV\IB'SS.V 3MIWA ONLLY3IS
    ©4735 ONY WIVHHdVIO
                                                                                     W317i4 713N 4 d4OLOICNI
    manwnissy HOvIN93H4
          3HNSSIHd 7304
                                                         soid3rNi 1303


CORE PiECE


    BALLl VALVE       p ',
                         B /-VALVE SEAT



                                   ATOMIZER
                    Weat Patrian



                  INJECTOR


                    Table 1



           HOLLEY RECOMMENDED INJECTOR




Engine Size                        Injector Size



   1. 8.                        50 lbs./hr at 11 psi



  2.0L                          50 lbs./hr at 11 psi


  2.5L                          64 lbs./hr at 12 psi


                             Table 2

                    HOLLEY‘S EMISSION TEST DATA
                EVALUATION OF HOLLEY TBI MODEL 3739
                 1985 Oldsmobile Ciera, 2.5 Liter


                   Exhaust Emissions (g/mi)
                   THC        CO         NOx

Baseline           0.13       1.9        0.3          23.44
Holley M—3739      0.04      2.0         0.2          23.73
Standard           0.41      7.0         0.7




                                    10


                                       Table 3

                            ARB‘S EMISSION TEST DATA
                      EVALUATION OF HOLLEY TBI MODEL 3739
                       1985 Oldsmobile Firenza, 2.0 Liter


                                  Exhaust Emissions (g/mi)        F.E.
                         THC           NMHC          CO   NOX     (mpg)

Baseline                  0. 17        0.13         3.4   0.43    23.41
Baseline                  0.16         01.3         3.0   0.44    23.70
            Average       0. 17        0.13         3.2   0,.44   23.56


Holley TBI(1)             0. 19        0.15         5.0   0.45    23.30
Hotey TBI(l}              0. 18        0.14         5.4   0.41    23.24
            Average(U) 0.19            O0.15        $.2   0.43    73.277

Holtey TsI(2)             0.29          _           2.0   0.59    23.5
Holley TBI(3)             0.18          ——          5.5   0.34    23.8
Holtey TBI(4)             0. 19         ——          2.6   0.46    23.9


Standard                   =—          0.39         7.0   0. 7     ——



    NOTES    (1): Holley injector calibrated for 64 lbs./hr. at 12 psi
             (2): Holley injector calibrated for 46 lbs./hr. at 13.5 psi
             {(3): Holley injector calibrated for 52 Ibs./hr. at 11 psi
             (4): HoHey injector calibrated for 50 lbs./hr. at 11 psi




                                               11



Document Created: 2005-09-01 12:42:00
Document Modified: 2005-09-01 12:42:00

Previous E.O. D-115-1 | Previous E.O. D-114 | Next E.O. D-115-3 | Next E.O. D-116