Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on July 18, 1986.
As of Wednesday, June 19th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1982-1986 Chevrolet, Buick, Pontiac Oldsmobile with a 2.5L engine 1983-1986 Chevrolet, Cadillac, Buick, Oldsmobile with a 2.0L engine, 1982-1986 Buick, Pontiac, Oldsmobile with a 1.8L engine

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-115-4
  • Executive Order 115-4 / D115-4
  • ARB # D-115-4
  • Executive Order No: D-115-4
  • C.A.R.B. No. D-115-4
  • Resolution D-115-4
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-115-4 PDF

D-115-4 Document:



                                                               (Page 1 of 2)

                               State of California
                               AIR RESOURCES BOARD
                       .     EXECUTIVE ORDER D—115—4 .
                    Relating to Exemptions under Section 27156              —
                                of the Vehicle Code


                        HOLLEY.REPLACEMENT— PARTS DIVISION
                       ~ COLT ‘INDUSTRIES OPERATING CORP.
                          THROTTLE BOBY INJECTION SYSTEM
                       FOR GM T.8L, 2.0L, ANBD—2.5L ENGINES


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 RESOLVED:    That the 1nstal1at10n of the Ho]ley throttle body
injection system, model 3739, manufactured by Holley Replacement Parts
Diviston, Colt Industries Operating Corporation, of 11955 <fast Nine Mile Road,
Warren, Michigan 48090, has been found.not to reduce the effectiveness of.
required motor vehicle. pollution contro] devices and, therefore, is exempt
from the prohibitions of Section 27156 of the Vehicle Code for the fol]ow1ng
General Motors (GM) Corporat1on vehxcles originally equ1pped with throttle
body injection system:.      ©

Mode} Year      :            vehicle Make   _        .        u_       Engine Displacement

1982—1986     Chevrolet, Buick, Pontiac, and Oldsmobitle                        2.5L    '
1983—1986     Chevrolet,. Cadillac, Buick and: Oldsmobile.             .        2.0L.
1982—1986     «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 shatl be prohibited unless prior approval
is obtained from the Air Resources Board     Exemption of a kit shall not be      .
construéd as an exemption to sell,   offer for sale, or advertise any component >
of akit as an individual device.


HOLLEY REPLACEMENT PARTS DiVISION.f                 ~         EXECUTIVE ORDER b-115-4
                             :        To                      (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 eithér 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 —Busingss and Professions Code makes untrue or misleading
advertising unlawful, and Section 17534 makes violation pun1shab1e as a
m1sdemeanor.

Section 43644 of the Health and Safety Code‘prqvides’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 certiffed 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
   subdiviston 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.

Executive Order No. D—115—3 dated October 30, 1985, is superseded and of no
further force and effect.


Executed at El Monte,   California, this                day—of Julx{ 1986.



                                            ¢Z)¥Nrw
                                                .   2/    /




                                           K. D. Drachand, Chief?
                                           Mobile Source Division


EVALUATION OF COLT INDUSTRIES HOLLEY THROTTLE B0DY INJECTION SYSTEM MODEL
3739 FOR EXEMPTION FROM THE PROHIBITIONS IN SECTION 27156 OF THE VEHICLE
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.)


                          STATE OF CALIFORNIA
                          AIR RESOURCES BOARD




EVALUATION OF COLT INDUSTRIES HOLLEY THROTTLE B0DY INJECTION SYSTEM MODEL
3739 FOR EXEMPTION FROM THE PROHIBITIONS IN SECTION 27156 OF THE VEKICLE
CODE IN ACCORDANCE WITH SECTION 2222, TITLE 13 OF THE CALIFORNIA
ADMINISTRATIVE CODE




                                JULY 1986


                                  SUMMARY



      The Holley Replacement Parts Division (Holiey) of Colt Industries

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

has requested an update to the existing Air Resources Board‘s Executive

Order No. D—115—3.   The applicant requested that the exemption from the

prohibitions of Vehicle Code Section 27156 for the company‘s throttle

body injection (TBI) System Model 3739 be updated to include applicable

1986 model—year vehicles.

      Based on the test data from comparative exhaust emissions tests

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

six—cylinder engine and on a California—certified 1985 Oldsmobile Firenza

powered by a 2.0 liter engine at the Air Resources Board (ARB)

Haagen—Smit Laboratory, and based on the fact that the 1986 model—year

General Motors (GM) Corporation vehicles are carryovers from the 1985

model—year, the staff concludes that the applicant‘s throttle body

injection system model 3739 will not adversely affect exhaust emissions

of applicable vehicles.

      The staff recommends that Holley be granted an exemption for their

TBI System Model 3739 as requested and that Executive Order D—115—4 be

issued.


                                     CONTENTS




                                                     Page _Number

SUMMARY                                                     i

CONTENTS                                                  i1

I.     INTRODUCTION                                        1
II.    CONCLUSION

III.      RECOMMENDATIONS

IV.    HOLLEY TBI SYSTEM DESCRIPTION AND OPERATION

V.     HOLLEY TBI SYSTEM EVALUATION



                                                           4a
VI.    DISCUSSION

                                                           B

APPENDICES

       HOLLEY TBI SYSTEM SCHEMATIC DIAGRAM

       OEM INJECTOR

       TABLE 1:     HOLLEY RECOMMENDED INJECTOR

       TABLE 2:     HOLLEY‘S TEST DATA                    10
       TABLE 3:    ARB‘S TEST DATA                        11




                                         11


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 SECTION 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 by letter dated July 1, 1986, an update of exi§ting Air

Resources Board‘s, Executive Order D—115—3.        The applicant requested that

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

company‘s throttle body injection (TB1) system model 3739 be updated to

include 1986 model—year.        The exemption is sought for the following 1982

through 1986 General Motors (GM) Corporation vehicles originally equipped

with TBI system:

      Model —Years             Vehicle Makes                         Engine Size

      1982—1986         Chevrolet, Buick, Pontiac and Oldsmobile       2. 5L

      1983—1986         Chevrolet, Cadillac, Buick and Oldsmobile       2.0L

      1982—1986         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, and based on the fact that the 1986 GM vehicles are carryovers from

the 1985 model—year, the staff has concluded that Holley has demonstrated

compliance with—the requirements for the exemption as per ARB adopted

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

III.   RECOMMENDATIONS

       The staff recommends that Holley be granted an exemption for their TBI

system model 3739 as requested and that Executive Order D~115—4 be issued.

IV.    HOLLEY TBI SYSTEM DESCRIPTION AND OPERATION

       The Holley TBI system mode]l 3739 is designed to be an economical bolt on

replacement TBI system for limited 1982 through 1986 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

regulator 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.


                                    L 2 —


         The fuel injector is a solencid 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 diaphram—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 accommodate 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.

¥.    HOLLEY TBI SYSTEM EVALUATION

      Evaluation of the Holley TBI system consisted of comparative

exhaust emissfon 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 powered by a 2.0 liter

engine.

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

VI.   DISCUSSION

      The Holley Replacement Parts Division (Holly) of Colt Industries

Operation Corporation throttle body injection system model 3739,

applicable to 1982—1985 model—year vehicles, was granted an exemption

(E.0. No. D—115—3) on October 30, 1985.    The exemption was granted on the

basis that the effectivness of the vehicle‘s pollution control system was

not reduced.   The applicant requested that the Executive Order No.

D—115—3 be updated to include applicable 1986 model—year vehicles.


©          In response to the request, the staff reviewed the General Motor

    ~ (GM) Corporation certification data to determine whether the applicable

     1986 model—year GM vehicles are carryovers from 1985 model—year

     vehicles.   Since the GM 2.5L, 2.0 and 1.8L engines of 1986 model—year

     vehicles are indeed carryovers, the staff is of the opinion that they

     will have the same degree of performance/ emissions impact as in the 1985

     model—year vehicles.   No additional testing was required or performed for

     updating the Executive Order.


APPENDICES


                        EUEL INJECTOR
                                                              FUELPRESSURE
                                                              REGULATOR ASSEMBLY
                                                               DIAPHRAGM, AND SELF.
                                                               SEATING VALVE ASS.EMBLY
                                                             _FUEL RETURN
                                                             (TO FUEL TANK)
                                                                      FUEL INLET |    \
                                                                     (FRom FUEL PUMP)
             THROT TLE POSITION                                                       —
     a




             SsENS OR
& Fi g'ure
                           FUEL METERING SCHEMATIC
                          (OLLEY THROTTLE RODY INJEC TION)


Fiéure




                           8               %

                                       a   1




                           IPll§|
                           [ t 1.                   solfNIID
                          4n
         CORE PiECE                |           |   WO ®



             BALL VALVE             LC—vauve segat

                                       6


                                                   ATOMIZE®
                               Sreay Pafrinu



                          INJECTOR




                                 — 8 —


                     Table 1



           HOLLEY RECOMMENDED INJECTOR




Engine Size                        Injector Size



   1.8L                         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         F.E.
                   THE_       _C0_      NOx_          Tmpg)
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 Tts1(1)           0.19       0.15         5.0   0.45   23.30
Kolley TBI(])            0.18       0.14         5.4   0.41   23.24
            Average(1) 0.19         0.15         5.7   0.43   23.27

Holley Ts:(2)            0.29         _—         2.0   0.59   23.5
Holley Tts1(3)           0.18         ——         5.5   0.34   23.8
Holley Ts1(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 lbs./hr. at 11 psi
             (4): Holley injector calibrated for 50 lbs./hr. at 11 psi




                                      — l1   —



Document Created: 2005-09-01 12:42:31
Document Modified: 2005-09-01 12:42:31

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