Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on October 9, 1997.
As of Saturday, October 19th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

ModelsModification
1987-1997 Rover Group Limited vehicles equipped with the 4.0L/ 4.6L enginesIt includes the following main components: Eaton M-62 supercharger, hardware and tubing necessary to connect to stock intake manifold and air filter housing, and a new throttle-body housing. No changes are made to the stock fuel delivery system or ignition system. The manufacturer recommends 91 or higher octane fuel. The kit includes a 2.375" diameter supercharger pulley.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-438
  • Executive Order 438 / D438
  • ARB # D-438
  • Executive Order No: D-438
  • C.A.R.B. No. D-438
  • Resolution D-438
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-438 PDF

D-438 Document:



                                                                                  (Page 1 of 2)

                                              State of California
                                         AIR RESOURCES BOARD

                                        EXECUTIVE ORDER D—438
                                 Relating to Exemptions Under Section 27156
                                              of the Vehicle Code

                                      RIMMER ENGINEERING, INC.
                                       5 PSI SUPERCHARGER KIT


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 Section 39515 and Section 39516 of the Health and
Safety Code and Executive Order G—45—9;

IT IS ORDERED AND RESOLVED: That the installation of the 5 PSI. Supercharger Kit, manufactured and
marketed by Rimmer Engineering, Inc., 940 Motor City Drive, Colorado Springs, Colorado 80906 has been
found not to reduce the effectiveness of the applicable vehicle pollution control system and, therefore, is
exempt from the prohibitions of Section 27156 of the Vehicle Code for 1987—97 Rover Group Limited
vehicles equipped with the 4.0/4.6L engine.

The 5 PSI. Supercharger Kit includes the following main components: Eaton M—62 supercharger, hardware
and tubing necessary to connect to stock intake manifold and air filter housing, and a new throttle—body
housing. No changes are made to the stock fuel delivery system or ignition system. The manufacturer
recommends 91 or higher octane fuel. The kit includes a 2.375" diameter supercharger pulley.

This Executive Order is valid provided that the installation instructions for the supercharger will not
recommend tuning the vehicle to specifications different from those of the vehicle manufacturer.

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

Marketing of the supercharger using any identification other than that shown in this Executive Order or
marketing of the supercharger 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 the supercharger
shall not be construed as exemption to sell, offer for sale, or advertise any component of the kit as an
individual device.

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

This Executive Order is granted based on submitted emissions test data which showed that the Rimmer
Engineering, Inc.‘s 5 PSL Supercharger Kit did not adversely affect tailpipe emissions during the Cold Statt
CVS—75 Federal Test Procedure. However, the ARB finds that reasonable grounds exist to believe that use
ofthe Rimmer Engineering, Inc.‘s Supercharger Kit may adversely affect emissions of motor vehicles when
operating under conditions outside the parameters of the previously prescribed test procedures. Accordingly,


RIMMER ENGINEERING, INC.                                            EXECUTIVE ORDER D—438
5 PSI. SUPERCHARGER KIT                                             (Page 2 of 2)




the ARB reserves the right to conduct additional emission tests, in the future, as such tests are developed,
that will more adequately measure emissions from all cycle phases. If such test results demonstrate that the
supercharger adversely affects emissions during off—cycle conditions (defined as those conditions which
are beyond the parameters of the Cold—Start CVS—75 Federal Test Procedure), this Executive Order shall
be effectively rescinded as ofthe date the test results are validated. Further, if such test results or other
evidence provides the ARB with reason to suspect that the supercharger will affect the durability of the
emission control systems, Rimmer Engineering, Inc. shall be required to submit durability data to show
that the durability of the vehicle emission control system is not, in fact, affected and/or that the add—on or
modified part demonstrates adequate durability.

In addition to the foregoing, the ARB reserves the right in the future to review this Executive Order and
the exemption provided herein to assure that the exempted add—on or modified part continues to meet the
standards and procedures of Title 13, California Code of Regulations, Section 2222, et seq.

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 RIMMER ENGINEERING, INC.‘S SUPERCHARGER KIT.

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

Violation of any of the above conditions shall be grounds for revocation of this order. The order may be
revoked only after a ten—day written notice of intention to revoke the order, in which period the holder of
the order may request in writing a hearing to contest the proposed revocation. If a hearing is requested, it
shall be held within ten days of receipt of the request and the order may not be revoked until a
determination after hearing that grounds for revocation exist.

Executed at El Monte, California, this     f’fi day of October 1997.




                                     <R. B. Summerfield, Chief
                                      Mobile Source Operations Division


                        State of California
                    AIR RESOURCES BOARD




 EVALUATION OF RIMMER ENGINEERING, INC.‘S SUPERCHARGER KIT
    FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
               CALIFORNIA CODE OF REGULATIONS




                          October 1997


                                               State of California
                                          AIR RESOURCES BOARD




              EVALUATION OF RIMMER ENGINEERING, INC.°S SUPERCHARGER KIT
                FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
             SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
                            CALIFORNIA CODE OF REGULATIONS




                                                       by
                                      Mobile Source Operations Division
                                            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.)


                                                SUMMARY



             Rimmer Engmeefing, Inc. of 940 Motor City Drive, Colorado Springs, Colorado 80906 has

applied for an exemption from the prohibitions in Section 27156 of the California Vehicle Code (VC) for

their supercharger designed for 1987—97 Rover Group Limited vehicles equipped with the 4.0/4.6L engine.

             Based on submitted emissions test data, the staff concludes that the supercharger will not

adversely affect exhaust emissions from vehicles for which the exemption is requested.

             The staff recommends that Rimmer Engineering, Inc. be granted an exemption as requested and

that Executive Order D—438 be issued.


                             TABLE OF CONTENTS



                                             — Page Number




SUMMARY                                          ' i

CONTENTS                                           i

1. INTRODUCTION                                    1

II. CONCLUSION                                         1

IIL RECOMMENDATION                                     1

IV. SUPERCHARGER KIT DESCRIPTION                       1

V. DISCUSSION OF THE SUPERCHARGER KIT              2




                                        i


                EVALUATION OF RIMMER ENGINEERING, INC.‘S SUPERCHARGER KIT
                 FOR AN EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE
               SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE
                              CALIFORNIA CODE OF REGULATIONS


L INTRODUCTION

               Rimmer Engineering, Inc. of 940 Motor City Drive, Colorado Springs, Colorado 80906 has

applied for an exemption from the prohibitions in Section 27156 of the California Vehicle Code (VC) for

their supercharger designed for 1987—97 Rover Group Limited vehicles equipped with the 4.0/4.6L engine.

II. CONCLUSIONS

               Based on submitted emissions test data, the staff concludes that Rimmer Engineering, Inc.‘s

5 PSI. Supercharger Kit will not adversely affect exhaust emissions from the vehicles for which the

exemption is requested.

IH. RECOMMENDATION

               The staff recommends that Rimmer Engineering, Inc. be granted an exemption for their 5 PSI.

Supercharger Kit for installation on those applicable Rover vehicles. The staff also recommends that

Executive Order D—438 be issued.

IV. SUPERCHARGER KIT DESCRIPTION

               The 5 PSI. Supercharger Kit has been specifically designed for installation on 1987—97 Rover

Group Limited vehicles equipped with the 4.0/4.6L engine. The kit operates in conjunction with the original

equipment manufacturer‘s (OEM) computer controlled fuel injection system and emission control system

already certified with the stock engine.

               The purpose of supercharging an engine is to increase its volumetric efficiency and power

output at particular engine loads and throttle openings. Atlight engine loads and small throttle openings,

power output is the same as a normally aspirated engine. At heavy engine loads and increased throttle

openings, the manifold pressure is increased by the supercharger allowing more air to enter the engine,

resulting in a higher power output. The superchargeris driven utilizing the engine‘s standard serpentine belt

loop system.


              The supercharger used for this kit is an Eaton roots type blower, designed to have a maximum

boost of 5 PSI. Boost is limited only by the diameter ofthe input pulley.

              The installation of the kit does not require any major modifications to the stock motor, except

for the new intake tubing, intake manifold adaptors, a new throttle body housing, and hardware needed to

transfer the stock components. The stock air cleaner is utilized with the supercharger installation. New parts

include the intake air tubing which connects the supercharger to the stock intake manifold and stock air

cleaner, throttle body housing, and all necessary hardware to mount the supercharger kit.

v.            DISCUSSION OF THE SUPERCHARGER KIT

              A 1996 Land Rover Discovery with a 4.0L fuel injected engine was used for the evaluation of

the supercharger. Testing consisted of one Cold Start CVS—75 Federal Test Procedure in the baseline

configuration, one Cold Start CVS—75 Federal Test Procedure in the modified configuration, and an dBD II

evaluation. The dynamometer inertia weight and horsepower settings were 4750—lbs and 14.0—hp,

respectively. The emissions testing was conducted by California Environmental Engineering. Table 1.

list emission results in gm/mi.

                                                   Table 1.

                                  NMHC             CO               NOx

       Baseline                   0.34             2.59              0.23

       Device                     0.38             1.94              0.17

       Difference                 0.04           — 0.65            — 0.06

              Results from the emission tests conducted at California Environmental Engineering show the

vehicle emissions with the 5 PSI Supercharger installed to be within the allowable test variability of 0.1

grams per mile or 10 percent of baseline for hydrocarbons and oxides of nitrogen and 1.0 grams per mile or

15 percent of baseline for carbon monoxide. Based on the test results, the staff concludes that the installation

of the Rimmer Engineering, Inc.‘s 5 PSI. Supercharger Kit will not have an adverse effect on exhaust

emissions ofthe affected vehicles. The ARB did not perform testing to confirm the emission test results

                                                     _2_


submitted by the applicant; however, ARB staff evaluated the impact of the supercharger on the OBD IL

system. Scan tool testing confirmed that the supercharger did not affect the vehicle‘s ability to perform the

OBD II system operation. Therefore, based on the test results and OBD II evaluation, the staff concludes that

the installation of the supercharger will not have an adverse effect on exhaust emissions on those applicable

vehicles when operated similar to the CVS—75 Federal Test Procedure.

             Rover Group Limited certified one engine family in 1997 (VLR4.058GFFK) to the Enhanced

Evaporative Emission Standards.     The vehicle‘s evaporative emissions should not be affected because the

installation of Rimmer Engineering, Inc.‘s Supercharger Kit does not modify the vehicle‘s fuel or evaporative

emission control system, and the stock closed element air cleaner is retained. Rimmer Engineering, Inc. has

submitted all the required information and fulfilled the requirements for an exemption.



Document Created: 2005-09-01 12:39:53
Document Modified: 2005-09-01 12:39:53

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