Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on July 12, 1978.
As of Thursday, December 13th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1978 and older gasoline vehicles.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-81
  • Executive Order 81 / D81
  • ARB # D-81
  • Executive Order No: D-81
  • C.A.R.B. No. D-81
  • Resolution D-81
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-81 PDF

D-81 Document:



                                                            T .O {Beoor—
                                                             (Page 1 of 2)



                            State of California
                            AIR RESOURCES BOARD

                            EXECUTIVE ORDER D—81
              Relating to Exemptions under Section 27156
                          of the Vehicle Code


                      WALKER ENGINEERING COMPANY
                               "AIRSEP"

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 of
the Health and Safety Code and Executive Order G—30A;—

IT IS ORDERED AND RESOLVED: That the installation of the "Airsep" device
manufactured by the Walker Engineering Company, 2240 Sawtelle Boulevard,
Los Angeles, California 90064, has been found to not reduce the effective—
ness of required motor vehicle pollution control devices and, therefore,
is exempt from the prohibitions of Section 27156 of the Vehicle. Code for
installation on 1978 and older gasoline powered vehicles.

This Executive Order is valid provided that installation instructions
for this device will not recommend tuning the vehicle to specifications
different from those listed by the vehicle manufacturer.

Changes made to the design or operating conditions of the device, as
exempted by the Air Resources Board, that adversely affect the per—
formance 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.

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 "AIRSEP DEVICE."

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.


WALKER ENGINEERING COMPANY                        «.   EXECUTIVE ORDER D—81
"AIRSEP"                                                    (Page 2 of 2)



Section 17500 of the Business and Professions Code makes untrue or mis—
leading advertising unlawful, and Section 17534 makes violation punishable
as a misdemeanor.

Section 43644 of the Health and Safety Code provides 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 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.

                                                 Ah
Executed at Sacramento, California, this   ié}         day of July, 1978.

                                       SVRmaury w
             +                     Thomas C. Austin
                                   Deputy Executive Officer


                                                          C}Cfiflflfli/bfify//

 ROUGH DRAFT


  Mr. Robert A. Walker
. President   _            .
  Walker Engineering Company
  2240 Sawtelle Blvd.
 Los Angeles,      CA   90064



 Dear Mr. Walker:

              This is in responée to your request for an exemp—
 tion from the prohibitions of Section 27156 of the California
 Motor Vehicle Code for the "Airsep" device to be used on
 1978 and older model véhicles.


              Our evaluation, documented in the enclosed staff
 report, indicates that the installation of the "Airsep"
 device would not cause any adverse affects on emissions.


              Enclosed you will find Executive Order D—81
 exempting the "Airsep" from the prohibitions of Section
 27156 of the Motor Vehicle Code foruse on all 1978 and
 older model vehicles.
               *
              Should you have any questions regarding this
 matter, please contact Mr.     N.   Ka&ne, Manager, Aftermarket
 Parts and Modifications Evaluation Section at (213)         575—
 68 39.

                                     Sincerely}

                                     ORIGINAL SigNED By


                                     Thomas C. Austin
                                     Deputy Executive Officer

 Attachment


                             State of California
                             AIR RESOURCES BOARD

                                June 16,   1978

              Evaluation of the Walker Engineering Company
            "Airsep" Device in Accordance with Section 2222,
             Title 13 of the California Administrative Code



I.    Introduction

      Walker Engineering Cémpany, 2240 Sawtelle Boulevard, Los Angeles,

      California 90064, has applied for an exemption for the "Airsep"

      device from the prohibitions of Section 27156 of the Vehicle Code

      (See Exhibit A).     The applicant is requesting that an exemption

      be granted for 1978 and older gasoline powered vehicles.


II.   System Descrigtion

      The "Airsep" is a b]owby gas—oil separator installed as part of

      the Positive Crankcease Ventilation system.      The blowby gas is

      taken from the crankcease through an opening in each rocker arm

      cover and fed to the "Airsep" device.       The "Airsep" device sepa—

      rates the gases from the oil.     The oil is allowed to flow back

      into the crankease.    The oil free gases are then split into two

      streams.    One stream passes through the PCV valve into the intake

      manifold.   The other goes into the air cleaner.


III. System Eva1uati6n

      The applicant submitted CVS—75 data obtainéd at the Auto Club of _

      Southern California Laboratory, 2601 So. Figuerca Street, Los

      Angeles, —California; a recognized vehicle emission laboratory.         The

      tests were run on a 1973 Dodge Dart, 318—¥8 engine, with automatic

      trahsmission.and 46008 miles.    The results were as follows:


                                         2.

                                 Baseline                With Airsep
                                  gm/mi                    gm/mi

           HC                     2.93                     2.68

           co            .       41.          >           34.93
           NOx       .            5.49                     5.22
      The applicant also submitted tests run by Chrysler on a new 1978

      Le Baron, V—8 with automatic transmission, with approximately 400

      miles on the odometer.    These tests gave the following results:

                                 Baseline.gm/mi               With Airsep,.gm/mi
                                 CVS—75     Hwy                CVS—75       Hwy

         _’HC                     .11              .09             12      w10

           CO                    1. 24             .49            3.25     48

           NOx                  1.61 0            2.41            1.31   2.33
           Economy mi/gal       13.9          18.4            13.7       18.9
      Since these tests were run on an unstabilized vehicle just off the

      assembly lines, the variations may be due to green engine effects.

      This device is similar to the previously approved "Oildex" system

      which had received extens{ve tests by fihe Air Resources Board prior

      to its certification.    The staff therefore believes there is no

      need for further tests at this facility.


IV.   Manufacturer‘s Claims

      The applicant has agreed to delete his claims concerning fuel economy,

      pollution reduction, sparkplug life, and optimum ignition timing

      adjustments.


      It is the staff‘s opinion that there is some benefit in keeping

      oil vapors from being carried by the blowby gases through the PCV

      system into the air cleaner and the induction system.


Conclusion and Recommendation

The app]jéant's device consists of the existing PCV éystem plus a

mechanism for separating the oil droplets from the blowby gas.   The

staff belfeves that this will not result in afi increase in emissions.

The submitted test data in general verified this opinion;   The staff‘

therefore recommends that the Walker Engineering Company be granted

an exemption, by Executive~brder D—81, for its ;Airsep" device from

the prohibitions of Vehicle Code Section 27156 for 1978 and older

model vehicles.


                                                    EXHIBIT A

                       Allen L. Eest
                  _ 606 Lazy Springs br.
                     ked Gak, Texas 75154

                                                March 13, 1978

Mr. G. C. Hass, Chief
Division of Vehicle Emission Control
Air Resources Board
9528 Telstar Avenue              i
                                     RECEIVED Plikis
                                              HAR 2 7 7:
El Honte, California    91713    |

Bear Hr.. Hass:

We are hereby applying to the Air Resources Board of the
State of California for exemption to Vehicle Code 27156
for the oil recovery system manufactured by Walker Engineer—
ing Company.

This oil recovery—system will be marketed under the brand
name "AIRSEP".

Enclosed is the information and test data established
by the "Eoard Criteria" for expediting our aspplication.
Shoulé you find that additional information is required,
please call me collect at my office 214 330—5261 or my
home 214 223—5217.
      N

Thank you for your assistance in this matter.

                                Yours very truly,



                             Allen R.    Best

ARB/ jb —
Enclosures


          Ta%efz Engineertug Gowfp
                                cwg
                               November 28, 1977




Mr. G.    S. Haas
Haagen—Smit Laboratory
Air Resources Board
9528 Telstar Avenue
El Monte, California 91731

Gentlemen :

          This is to advise you that we are in the process
of preparing certain data preliminary to making application
for exemption from the prohibitions of provisions of California
Vehicle Code,       Section 27156.        Mr. Allen Best on behalf of
Walker Engineering Company is authorized and empowered to
conduct all matters necessary to—securing such exemption from
the Air Resources Board and act as our authorized representa—
tive.

                                          Ve      ruly yoy&s,            v



            e                    ~        Robert A. Walker            omm
                                        . President

RAW/ 1w




     2240 SAWTELLE BLVD.   e    LOS ANGELES, CALIF. 90064   «*   (213) 272—1248


Ouf request for exemption from the prohibitions of Yehicle

Code 27156 covers all gasoline powered cars, light and

heavy trucks 1965 and newer. . Our tests show the AIESEP,l

air—oil separator to be compatable with all emission

controlled vehicles 100 cc and above.
         +


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                                                      AsSP70




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                           warranty

              Walker warrants its AIRSEPs that it will repair
    or replace free at any time any AIRSEP as it is applied in
    its first use or original application to an internal com—
    bustion engine found under normal use in the United States
    or Canada to be defective in factory materials or workman—
    ship, except hoses and clamps.

              All that Walker requires is that there is no
    intentional damage to the AIRSEP and that it be inspected
    and certified to be in its original installed vehicle by
    a Walker dealer and that the AIRSEP be returned to WALKER
    with such dealer certification for replacement.

              THERE IS NO OTHER EXPRESS WARRANTY ON THE AIRSEP.

.             ANY IMPLIED WARRANTY OF MERCHANTABILITY, OR FIT—
    NESS IS LIMITED BY THE TERMS OF THIS WRITTEN WARRAWNTY.

               TO THE EXTENT ALLOWED BY LAW, NEITHER WALKER NOR
     THE SELLING DEALER SHALL HAVE ANY RESPONSIBILITY FOR LOSS
    ~OF USE OF, LOSS OF TIME, INCONVENIENCE, COMMERCIAL LOSS OR
     CONSEQUENTIAL DAMACE TO THE VEHICLE OR EQUIPMENT, TO WHICH
     THE AIRSEP IS APPLIED.


                                                            Outside Air to Carburetor



                                                 Crankcase Vapor




      Air Return to Carburetor                                                                       Intake Air to Eng'me'.



00 PCV Valve—            —           [     O.a



~ ‘aArser
< Air—Oi                     : Crankcase
 Separator                    Vapor Lines
                                         sn
              :B


                             Qil Return Line




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       @J WALKER ENGINEERING COMPANY
                   2240 Sawtells Boulevard, Los Angeles, Cchformc 90064 » Telaphone: (213) 2721248


                                  AIRSEP
                     GENERAL INSTALLATION INSTRUCTIONS

NOTE:    THE FOLLOWING INSTRUCTIOXS ARE BROKEN DOWN INTO THE DETAIL AREAS
         NECESSARY TO INSTALL THE AIRSEP.. FIRST DETERMINE THE DETAIL AREA
         FOR THE STEP YOU ARE WORKING ON, i.e. AIRSEP MOUNTING IS DETAIL 1.
         THEN REFER TO THE WRITTEN INSTRUCTIONS UNDER DETAIL.

DETAIL 1.         AIRSEP MOUNTING

         Observe the following installation conditions before mounting
         the AIRSEP.
         1.    When 1nsta11ed the bottom of the AIRSEP must be at least
              3" above the. oil level in the oil pan.
         2.   The 2" return air duct flange on the top of the ALIRSEP, must
              be at least 3" below any upper limiting surface of the
              vehicle, i.e. the hood.
         3.   The 3/4" breather lines must be able to be connected to the
              AIRSEP unit without kinking.
         4.   The mounting bracket must be installed so that the AIRSEP
              will be in a vertical plane + 5 degrees.
STEPS:
         1.   Secure mounting bracket to located position, with the large
              clamp between the bracket and the structure.
         2.   Clamp the AIRSEP unit to the mounting bracket using the
              large clamp.  (Position the hose bibs so that the 3/4" lines
              can be easily 1nsta11ed)

DETATL _ 2.       VALVE COVER FITTINGS

         Observe the following installation conditions before installing
         the valve cover flttlngs
         1.  Locate a position on the valve cover so that when the valve
              covéer fittings are installed, they will not interfere with
              the operation of the rocker arms.
         2.   —The PCV valve position may be used in one valve cover, if
              when the PCV valve grommet is removed, there is a 7/8" hole
              in the valve cover.
         3.   After drilling the valve cover, remove all metal chips using ;
              a magnet.
STEPS:
         1.   Using a 7/8" hole saw, drill a 7/8" hole in the valve covers
              (If the existing PCV valve hole is to be used, drill only
              one valve cover)}.                              /
         2.   Install the 3/4" grommet in the valve cover.
         3.   Install the plastic elbow in the grommet.                    i
         4.   Cut, connect and clamp the two (2) 3/4" hoses to the plastic |
              valve cover fittings and the AIRSEP unit.                    i

DETATIL 3.        AIRSEP, AIR RETURN DUCT

         Observe the following installation conditions before mounting
         the AIRSEP air return duct.
         1.  The air return duct elbow, should be installed in the air
             cleaner top, in the low pressure area between the air filter
              element and the carburetor.   If this is not possible, then
              the air may be returned to the side of the air cleaner.


                                   '    ALKRSEP
                       GENERAL INSTALLATION INSTRUCTIONS CONT.


DETAIL 3.     (conr
STEPS:
               Using a hole saw, drill a 1—7/8" hole in the top of the air
               cleaner housing.
               Install the elbow fitting from the top inward, with the nut
               on the inside. Drill and cotter pin the nut to the elbow.
               Install the 2" duct from the air cleaner elbow to the
               AIRSEP unit with the end that has the stainless steel element
               closest to the air cleaner.  Clamp both ends of the hose.

DETAIL 4 4.           PCV _VALVE INSTALLATION |

         Observe the following 1nsta11at10n conditions before installing:
         the PCV valve.
         1. If the original PCV valve is to be re-used it should be
             thoroughly cleaned before re—using.
         2. Some PCV valves require installation in a vertical position
             to operate properly.  Besure which type you have and
             install it vertically or otherwise as appropriate.

STEPS:
               Remove the old PCV valve line from the bottom of the
               Carburetor (or in some cases, from the Manifold).         ’
               Install a short line between the PCV valve and the AIRSEP
           . PCV valve outlet. Clamp both ends in place.
             Install a long line from the outlet of the PCVvalve to the
             PCV valve inlet on the bottom of the Carburetor. Clamp both
             ends.                                                    [
         4. Tie the line in place using tie wraps.
DETAIL 5 5.           OIL RETURN FITTING AND LINE

         Observe      the following 1nstallatlon conditions before 1nsta111ng
         the oil      return fitting and line.
         1. Oil       pan fitting should be installed above the oil level in
             the      pan.
         2. Oil return line, should be installed so that it has as few
               low spots in it as possible.
STEPS:
         1.    Install the oil return flttlng in the pan.            Using a 45° cente:
               punch, punch a 3/16" hole in the center of the side of the oi
               pan 1—1/2" below the superior lip of the oil pan well above
               the interior oil level on the side of the engine nearest to
               the AIRSEP.   Insert the self tapping oil pan fitting into the
               hole until the rubber on the washer seals the fitting.   Be
               certain that the fitting is inserted straight rather than at
               an angle.   Insert the threaded hose nipple into the pan fitti:
               Attach the oil return line from the oil drain tube on the
               ALIRSEP to the self tapping oil pan fitting.  Clamp both ends
              ‘ of the line.
               Install the hose nipple in the oil pan fitting.
               Connect the 3/8" drain hose from the pan fitting to the oil
               outlet fitting on the AIRSEP.         Clamp both ends of the line.



                                                  KW—5000, KW—5002       o REV. LTR.


                                  ‘CENERAL INSTALILATION INSTRUCTIONS
                                                 AIRSEP




                                                                  Outside Air to Carburetor |


              ATRSEP         AIR RETURN DUC'I‘k (DETATL 3]
                                           rankcaseVapor



                                                                        \
E_.C,.._.
        VA.LYE
_.ETAIL 4)
    PCV Valve— [




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  Separator     Y       $     } ; Vapor Lines
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                     4Ty         ~—AIRSEP MOUNTING
                     l                  (DETAIL 1)
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                      QIL_RETURN FI              NG ~
                               (DETAIL5)



        ;{3\;7 WALKER ENGINEERING COMPANY
        \..f           2240 Sawtelle Souievard, Los Angeles, California 200464 * Telephone: (213) 272—1248


                                                                   KW—5000, KW—5002                          REVY LTR.


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                                                                 ‘KW—5000, KW—5002          REV. LTR.


                                *AIRSEP

                    General Maintenance Instructions




Routine Maintenance:

1,   All hoses and fittings should be given a visual inspection every
     tune—up.                                              .

2.   Each engine overhaul, the Airsep should be removed and rensed
     out thouroghly using solvent. Inspect all hoses and fittings and
     replace as required.           >


                                                            en )




                                                                                            AIRSEP Model "OJ"




                                                                                             +




                                                            Outside Air to Carburetor


                                              Crgnkcase Vapor
                                 fT—           4                   S                    )


                                 *                      .                     »
    Air Return to Carburetor                                                                     Intake Air to Engine
                                     |
              %f» mz                         oi#
                     l    r—:F           ——
  PCV Valve—         g   3'      -l
                 c             mE


AIRSEP       €
Air—Oi                    Crankcase
Separator    VL}{J        Vapor Lines

                 7                       .



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                         Oif ReturnLine                        +
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                                                               ______
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          Cuts oil consumption 50 to 80% m Reduces            separates the oil from the emission vapors and refurns it
frequency of cilchange a Keepstruck and sutround—             directly to the crankcase.
ing atmosphere clean by eliminating oil blowby                      Oil consumption is greatly reduced as well as fre—
Increased power and—gus—mileage i Lower costs /               quency of crankease oil replenishment. Tests have indi—
more profits                                                  cated a recovery of 50 to 80% of crankease oil previously
     . ARSEP Air—Oif Separator will improve the efficiency    wasted, depending on the type and condition of the en—
of your frucking operations dramati¢ally whether on short     gine. Areas previously exposed to oil blowby remain clean
haul delivery runs or long haulinfer—state service.           and engine breathing is vastly improved resulting in in—
       Designed to separate air and oil in crankcase venti—   creased power—and—gastiine—mileage.
tation systems or breathers on internal combustion en—              in vehicles subject to emission controls, AIRSEP
gines, the AIRSEP aftaches to the crankease vent and          ehmmo?es the major cause of combustion chamber con—
                                                                                                        Continued on bock


                                                PrtSpa E {/u.-..,z*r f///C/:/r.
Aominution as well as the cause of PCV valvé/cloggihg:                 of d{mlacemenAis easily aftoched to the crankcase
‘This condamination reduction also increases "pakplug                  vent and issecured by sturdy clamps.                        .
fite..allows reduction in engine ‘operating temperatures                      «AIRSEP, with no moving parts. is designed to last the
        ormils adjusiment—te—optimerm—ignition—tming:—thus             life of your engine. Depending on the number of miles °
   Iharreduoing —exhoust—emission—contaminaats; partic—                traveled daily, operators may well recover the entite cost
 .arly in low speed, high vacuum periods of engine opeta—              of an AJRSEP installation in asliftle as 3 to 6 months.
tion.                                                                         Lowered operating casts mean increased profils so
         The AIRSEP oit recovery system is only slighily larger        why nof fook info the benefits that the AIRSEP Model "OJ"
than an oil filter cartidge and it is available for all config—        can bring to your trucking operations. Contaoct your
urations of gasoline or other gas fired engines regordless             nearest Walker Dealer or call us direct. .

Prices (EO.8. Los Angeles)
Model "OJ" Chrome plated          $194
              Black epoxy         $178
All prices include mounting brackets and clamps.
Hoses and installation are not included.

Schematic Diagram of AIRSEP Installation on Standard Gasoline Engirie




                                                                  Outside Air to Carburetor



                    2                               Crankcase Vapor
                                          If-_.é                      ,.<L.    j                   m

                                                                        >

        Air Return to Carburetor                                                                               Intake Air to Engine

                   \V(» —————rt»
                                             =p<p
                                              =——————ito[ —oflv                     vi\a»‘
                    q(‘_] &




   PCV Valve—                              1          l
                     @‘%




                                                                                                     /
                                                                                       &
AIRSEP            £           4‘//Crankca
                                    > se            \ J
Air—Oi
Separator                          Vapor Lines
                      ¢


                      I
         >           We mm mm ms®K
                                  Oil Return Line




               TX
                WALKER ENGINEERING COMPANY
                          2240 Sowlelle Boulevard, tos Angeles. California 20064 « Telephone: {213) 272—1248



Document Created: 2005-09-01 12:43:25
Document Modified: 2005-09-01 12:43:25

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