Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on July 3, 1986.
As of Thursday, December 26th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
690971978-1982 Chevrolet 2-WD pick-up trucks powered by a 305 or 400 CID

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-167
  • Executive Order 167 / D167
  • ARB # D-167
  • Executive Order No: D-167
  • C.A.R.B. No. D-167
  • Resolution D-167
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-167 PDF

D-167 Document:

CARB_D-167

(Page 1 of 2?) State of California AIR RESOURCES BOARD EXECUTIVE ORDER D—167 Relating to Exemptions under Section 27156 aof the Vehicle Code HEDMAN HEDDERS EXHAUST .HEADER PART NO. 69097 Pursuant to the authority vested in the Air Resourtes Soard by Section 27156 of the Y¥ehicle Code; and Pursuant to the authority vested in the undersigned by Sections 39515 and 39516 of the Health and Safety Code andExecutive Order G—45—5; IT IS ORDERED ANO RESOLYED: That the installatton of the exhaust header, part No. 69097, manufactured by Hedman Headers. 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 Venicle Code for 1978—1982 model—year Chevrolet 2—WDQ pick—up trucks with a California asim. certified engine displacement between 305 and 400 cubic inches, excluding adviill' those catalyst equipped vehicles using feedback controis. This Executive Order is valid provided that installatfon instructions for this exhaust header, part No. 69097, will not recommend tuning the vehicle to specifications different from those submitted by the device manufacturer. Changes made to the déesign or operating conditions of the exhaust header, part No. §69097, 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 exhaust header, part No. 69097, using an identification other than that shown in this Executive Order or marketing of this exhaust header, part No. 69097, for amn application other than those listed in this Executive Order shall be prohibited uniess prior approval is obtained from the Air Resources Board. Exemption of exhaust header—shall not be construed as an exemption to sell, offer for sale, or advertise any component of a exhaust header as an individual device. This Executive Order does not constitute any opinion as to the effect that the use of this exhaust header, part No. 69097, may have on any warranty either expressed or implied by the vehicle manufacturer. THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION, APPROVAL, CR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESOURCES 30ARD OF ANY CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY ALLEGED BEREFITS OF THE HEDMAN HEDCERS EXHAUST HEADER PART NO. 69097.

KEDMAN MANUFACTURING EXECUTIVE ORDER D—167—1 (Page 2 of 2) No claim of any kind, such as "Approved by the Atr Resources Board" may be made with respect to the action taken herein in any advertising or other oral or written communications. 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 firovides 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 useon 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 _Lé_ of November, 1991. R.B./ Summerfield Assistant Division Chief Mobile Source Division

State of California AIR RESOURCES BOARD EVALUATION OF HEDMAN MANUFACTURING‘S TUBULAR EXHAUST MANIFOLD SYSTEM MODEL NO. 89461 FOR EXEMPTION FROM THE PROKHIBITIONS OF VEKRICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS November 1991

State of California AIR RESOURCES BOARD EVALUATION OF HEDMAN MANUFACTURING‘S TUBULAR EXHAUST MANIFOLD SYSTEM MODEL NO. 89461 FOR EXEMPTION FROM THE PROHIBITIONS OF VEKICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS by Mobile Source Division State of California Air Resources Board 9528 Telstar Avenue E1 Monte, CA 91731—2990 (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.) bae o esns s omam es c esw nen deaniitin t neoerhie tnamen .

SUMMARY Hedman Manufacturing (Hedman) of 9599 W. Jefferson Blivd. Culver City, CA. 90232 has applied for an exemption from the prohibitions in Section 27156 of the California Vehicle Code (¥C) for the Tubular Exhaust Manifold System, Model No. 89461. The Tubular Exhaust Manifold System is designed for installation on 1987—1992 Ford electronic fuel injected (EFI) trucks powered by a 7.5 liter gasoline Y—8 engine. Hedman has submitted a completed application and all the required information including comparative exhaust emissions test data from an independent laboratory which shows that the Tubular Exhaust Manifold System does not have any adverse effects on the emissions of the applicable vehicles. The staff recommends that Hedman be granted an exemption as requested and that Executive Order D—167—1 be issued for their Tubular Exhaust Manifold System, Model No. 89461. %

Page Number SUMMARY CONTENTS i I. INTRODUCTION II. CONCLUSION III. RECOMMENDATION IV. TUBULAR EXHAUST MANIFOLD SYSTEM DESCRIPTION DISCUSSION OF THE TUBULAR EXHAUST MANIFOLD SYSTEM VI. APPENDIX INSTALLATION INSTRUCTIONS CONTENTS LIST 1i

EVALUATION OF HEDMAN MANUFACTURING TUBULAR EXHAUST MANIFOLD SYSTEM MODEL No. 89461 FOR EXEMPTION FROM THE PROHIBITIONS OF YEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS I. INTRQDUCTION Hedman Manufacturing (Hedman) of 9599 W. Jefferson Blvd. Culver City, CA. 90232 has applied for an exemption from the prohibitions in Section 27156 of the California Vehicle Code (YC) for the Tubular Exhaust Manifold System, Model No. 89461. The Tubular Exhaust Manifold System is designed for installation on 1987—92 Ford electronic fuel injected (EFI) trucks powered by a 7.5 liter gasoline V—8 engine.. Hedman has submitted a completed application and all the required information including comparative exhaust emissions test data peffcrmed at Milton Roy Company. II. CONCLUSIONS Based on submitted data from emissions testing performed at an independent laboratory, the staff concludes that the Tubular Exhaust Manifold System does not have any adverse effects on emissions of the applicable vehicles. III. RECOMMENDATION The staff recommends that Hedman be granted an exemption as requested and that Executive Order D—167—1 be issued for their Tubular Exhaust Manifold System, Model No. §9461. IV. TUBULAR EXHAUST MANIFOLDSYSTEMDESCRIPTION The Hedman Tubular Exhaust Manifold System is designed for installation on 1987—92 Ford trucks powered by a 7.5 liter (460 CID) fuel injected gasoline engines. The Hedman Tubular Exhaust Manifold System consists of exhaust manifolds and pre—catalyst piping. As with theboriginaI equipment —1—

manufacturer‘s (OEM) exhaust system, the function of Hedman‘s system is to route exhaust gases from the two exhaust manifolds of the engine into a common pipe which then feeds to the catalytic converter. fach cylinder has a 1.75" diameter tube that combines with the adjacent tube into a 2" diameter tube. On each side of the engine, these two 2" tubes combine into a 2.25" diameter tube. Finally all the exhaust gases are then routed into a 3" tube which feeds into the pre—catalyst piping. All tutes are comprised of— #16 gage steel. The purpose of Hedman Manufacturing exhaust system is to enhance the exhaust flow through the use of steel tfibing with mandrel type bending methods used. The manufacturer claims, use of mandrel—type bending method prevents the tubing from being crushed or reduced in size during the bending of the tubing, thereby allowing the engine to work more efficiently. The system operates in conjunction with the OEM computer controlled electronic port fuel injection and emission control systems already certified with the stock engine. Insta]]ation of the Hedman‘s exhaust system does not alter the OEM location of the oxygen sensor and catalyst where applicable. The tune—up specifications also remain the same. v. SCUSSION OF_TH BULAR EXHAUST MANTFOLD SYST A 1991 Ford F—250 pick—up truck with a 7.5 liter (460 CID) fuel injected gasoline engine was used for the evaluation of the Tubular Exhaust Manifold System, Model No. 89461. The dynamometer inertia weight and loading used were 7000 lbs. and 18.2 hp. respectively. Comparative emissions tests conducted by Milton Roy Laboratory for Hedman consisted of one Cold—Start CVS—75 emission test in the unmodified {baseline} configuration, followed by one Cold—Start CVS—75 emission test _2«

in the modified (header system installed) configuration. The Air Resources Board (ARB) did not perform tests to confirm the test results submitted by the applicant. The following are the emissions test results from testing conducted at Milton Roy Company. Independent Laboratory: Miiton Roy Company, 1238 West Grove Ave., Orange, CA 92665—4134 Data HC CO NOx Baseline C.661 10.120 6.568 W/Device 0.742 9.872 7.060 Difference 0.080 —0.200 0.490 The differences between the device emission test results and baseline emission test results submitted by the applicant were within the allowed limits of 0.1 gm/mile or 10 percent of baseline HC, 1.0 gz/mile or 15 percent of baseline CO and .1 gm/mile or 10 percent of baseline NOx as specified in the "Procedures for Exemption of Add—On and WKodified Parts." Based on the test results, the staff concludes that the installation of the Tubular Exhaust Manifold System will not have an adverse effect on exhaust emissions of the affected vehicles. Hedman Manufacturing submitted all the required information and fulfilled the requirements for exemption.

APPENDIX C ommmarrresniansmsrmmnmie wes in

PART #89461 2 & 4 WHEEL DARIVE 4560 FORD W/ F.I. C A U T I 0O Nod THIS IS Aa CUSTOM DESIGNED EXHAUST HEDDER sYSTEM, DESIGNEO TO FIT THIS PaRATIcucA APPLICATION{(S)}. DO NOT BEND, BANG, CUT, OENT, OAILL, OR HEAT ANY PoRTION OF THIS HEDDER! ANY ALTERATION OTHER THAN THOSE sUccESsTED IN THISs InstTAUction SHEET wILL VOIO THE HEDMaAN LIFETINE WARRANTY! TO PAREVENT EXHAUST LEAKS, YOU SHOULDN INSTALL YOUR HEDOEAS WITH HEDMAN FLANCGE GASKETS ONLY! GEFORE STAATING INSTALLATION: It is necesssry to raise the vehicle at least 36 inches from e ground. A J floor hoist is recommended. If nome svailable, use sa hydraul c o jack stands. Da not use a bumper jack! INSTALLATION INSTAUCTIONS: & Discomnect battery to prevent electrical system damage. LEFT SIDES :« Remove spark plug wires, oil dip stick tube, and EGB tube fitzing. Remove stock exhaust manifolds. Soak EGA elbow with penetrant ({w#D40 etce) ahrsr:va from manifold. .0 W a5s! gesket in place, install hedder from below and start all bolts and ‘tighten evenly. ' i. Re—install dip stick tube, EGA elbow, EGA tube, and spark plug wires. It may be necessary to bend oil dip stick tube, brake, or fuel lines for sdequst clearance. Use a spacer and the stock studs for the dip stick ck tube. RIGHT SI0OE 6. fRemove spark plug wire and exhaust manifold. 7. With gasket in place, install hedder and start all hedders belts, most restricted first, and tighten all bolts evenly. 8. Check all lines, wires, hoses, etc. for sufficient clearance. 8. lUse a spsacer and stock stud to bolt the two brackets to the head. 0. Unplug and carefully remove the oxygen sensor from the stock headpipe Qsing a 7/8" box wrench. Install in the new manifold extension pipe. 1. Remove the hanger from the stock pipe and use with the new pipe. 2. Using clamps, flanges, gaskets, bolts, and nuts provided, install extension pipe. 13. Plug in oxygen sensor wire. Make sure it snaps into plug. »4 . Connect battery, start engine and check for leaks or strange noises. . Te vehicle for test drive allowing engine to resch normsl tempereture . sfter test drive, re—tighten all hedder bolts. CS3C9 Jefferson Bouleve. 4 Culver Ci%y, California 9023R (213) 8B3G— "mé|i Li wl en — moneume < +6 peraica > rom oi romomvaemnmecengns 8 on on sapme us o0 enangac t rontce nc

PARTS KIT FoR #89461 1 Instruction Sheet Catalytic Conmverter Gasket _ 2 3" Collector Flange Gaskets 2 Flange Gaskets 2 UC 214 Clamps 2 3" Collector Flanges 1 3" X 2%" OD Reducer 6 3/8 — 16X1" Bolts 6 3/8 — 16 Nuts 3 3/8 ID X % OD X 1.900 Spasers 16 3/8 — 16%1" Hedder Bolts 1 Left Side Crossover Pipe 1 Right Side Extension Pipe 1 Right Side Manifold 1 Left Side Manifold 16 3/8 Lock Wasghers 1 Oip Stick Bracket $g599 Jefferson Boulevard Culver City, California 9C232 (213) 839—78581 —6—


Document Created: 2005-09-01 12:42:43
Document Modified: 2005-09-01 12:42:43

| Previous E.O. D-166 | Next E.O. D-167-1 | Next E.O. D-168