Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on July 3, 1986.
As of Monday, December 17th, 2018 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:



                                                                        (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




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                          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

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