Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on October 21, 1992.
As of Thursday, December 13th, 2018 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
11N0041990-1993 Mazda MX-5 Miatas powered by a 1.6L gasoline engine equipped with Multiport Fuel Injection

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-246-1
  • Executive Order 246-1 / D246-1
  • ARB # D-246-1
  • Executive Order No: D-246-1
  • C.A.R.B. No. D-246-1
  • Resolution D-246-1
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-246-1 PDF

D-246-1 Document:



                                                          (Page 1 of 2)


                               State of California
                               AIR RESOURCES BOARD

                             EXECUTIVE ORDER D—246—1
                    Relating to Exemptions Under Section 27156
                               of the Vehicle Code

                             NELSON ENTERPRISES
             SUPERCHARGER KIT MODEL NO. SN—89, PART NO.    11N004



Pursuant to the authority vested in the Air Resources by Section 27156 of
the Vehicle Code;    and

Pursuant to the authority vested in the undersigned by Section 39515 and
39516 of the Health and Safety Code and Executive Order G—45—5;

IT IS ORDERED AND RESOLVED:  That the installation of the add—on
supercharger kit, with a 3.10" pulley, model number SN—89, part no. 11N004
manufactured by Nelson Enterprises of 3724 Overland Ave., Los Angeles,
California 90034, 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 Vehicle Code for installation on 1990—
1993 model—year Mazda MX—5 Miatas powered by a 1.6 liter gasoline
engine equipped with Multiport Fuel Injection.

Modifications of the emissions control components include the replacement of
the original equipment air cleaner with an aftermarket air cleaner, Part
Number 11NOAF,   included in the kit.

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 shall be prohibited unless prior
approval is obtained from the Air Resources Board.  Exemption of a kit shall
not be construed as an exemption to sell,   offer for sale,   or advertise any
component of the product as an individual device.

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 NELSON ENTERPRISES SUPERCHARGER KIT MODEL NO. SN—89, PART
NO. 11N004.


                                                                             —


NELSON ENTERPRISES                                    EXECUTIVE ORDER D—246—1
SUPERCHARGER KIT PART NO.   11N004                              (Page 2 of 2)




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 communications.

Violation of any of the above conditions shall be grounds for revocation of
this order.  The order may be revoked only after 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,   thistyg/   day of October,   1992.
                                                 /I




                                         eflk,,\/,dzu/jx
                                        (r.s   Summerfxeld
                                        Assistant Division Chief
                                         Mobile Source Division


                            State of California
                            AIR RESOURCES BOARD




             EVALUATION OF NELSON ENTERPRISES SUPERCHARCER KIT
    MODEL NO. SN—89, PART NO. 11N004 FOR EXEMPTION FROM THE PROHIBITIONS
OF VEHICLE CODE SRECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF
                      THE CALIFORNIA CODE OF REGULATIONS




                                October 1992


                            State of California
                            AIR RESOURCES   BOARD




  tCj        EVALUATION OF NELSON ENTERPRISES SUPERCHARGER KIT
  MODEL NO. SN—89, PART NO. 11N004 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 Division
                            State of California
                            Air Resources Board
                            9528 Telstar Avenue
                          El 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 the mention of trade names or commercial products constitute
endorsement or recommendation for use.)


                                      SUMMARY

     Nelson Enterprises   (Nelson)   of 3724 Overland Avenue, Los Angeles,

California 90034, has applied for an exemption from the prohibitions of

Vehicle Code Section 27156 for their add—on supercharger kit model number

SN—89, part no. 11N004.   The supercharger kit part no. 11N004 is intended

for installation on 1990—1993 model—year Mazda MX—5 Miatas powered by a 1.6

liter gasoline engine equipped with Multiport Fuel Injection.

     Nelson has submitted data from tests conducted on a 1993 Mazda MX—5

Miata powered by a 1.6 liter engine.      Based on these results, the staff

concludes that Nelson‘s supercharger kit will not adversely affect exhaust

emissions on those vehicles for which an exemption is requested.

     The staff recommends that Nelson be granted an exemption for their

supercharger kit model number SN—89, part no.     11N004, for installation on

1990—1993 model—year Mazda MX—5 Miatas powered by a 1.6 liter gasoline

engine equipped with Multiport Fuel Injection, and that Executive Order D—

246—1 be issued.


                             TABLE OF CONTENTS




                                                 Page Number



SUMMARY

CONTENTS                                              ii

I.         INTRODUCT ION

II.        CONCLUSION

III.       RECOMMENDATION

IV.        SUPERCHARGER KIT DESCRIPTI&N

           DISCUSSION OF THE SUPERCHARCGER KIT

VI.        APPENDIX

           INSTALLATION INSTRUCTIONS




                                       1i


        EVALUATION OF NELSON ENTERPRISES SUPERCHARGER KIT MODEL NO.
 SN—89, PART NO. 11N004 FOR EXEMPTION FROM THE PROHIBITIONS OF VBEHICLE CODE
 SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA
                            CODE OF REGULATIONS



I.    INTRODUCTION

      Nelson Enterprises (Nelson) of 3724 Overland Ave., Los Angeles,

California 90034, has applied for an exemption from the prohibitions of

Vehicle Code Section 27156 for their supercharger kit model number SN—89,

part no. 11N004.     The supercharger kit part no. 11N004 is intended for

installation on 1990—1993 model~year Mazda MX—5 Miatas powered by a 1.6

liter gasoline engine equipped with Multiport Fuel Injection.

II.    CONCLUSIONS

      Nelson has submitted data from tests conducted on a 1993 Mazda MX—5

Miata powered by a 1.6 liter engine and equipped with Multiport Fuel

Injection.   Based on these results,   the staff concludes that Nelson‘s

supercharger kit will not adversely affect exhaust emissions on those

vehicles for which an exemption is requested.

III. RECOMMENDATION

      The staff recommends that Nelson be granted an exemption for their

supercharger kit model number SN—89, part no.   11N004,   for installation on

1990—1993 model—year Mazda MX—5 Miatas powered by a 1.6 liter gasoline

engine and equipped with Multiport Fuel Injection, and that Executive Order

D—246—1 be issued.

IV.    SUPERCHARGER KIT DESCRIPTION

      The Nelson supercharger kit Model No. SN—89 is specifically designed

for installation on 1990—1993 model—year Mazda MX—5 Miatas powered by a 1.6


liter gasoline engine.    The kit operates in conjunction with the original

equipment manufacturer (OEM) computer controlled fuel injection systems and

emission control systems already certified with the stock engine.

     The purpose of supercharging an engine is to increase the volumetric

efficiency by forcing more air into the engine than it would consume in

normal aspirated, non—supercharged condition.       This is accomplished by the

addition of a centrifugal blower, Nelson Model No.      SN—89,   that is belt

driven at 1.6 times the speed of the engine on a 3.10" pulley.         Intake air

is delivered from the OEM air filtering system to the centrifugal blower.

VIt is then compressed by the superchargér and routed to the the electronic

fuel injection system.    Maximum positive manifold pressure or boost is

limited to 5 psi by the blower scroll housing and the impeller design.           No

wastegate or other active boost limiting device is used.

     To provide additional fuel to maintain the proper air/fuel ratio during

boost conditions,   a fuel control unit is added.    The fuel control unit when

placed in series with the OEM fuel pressure regulator in the fuel return

line will increase the fuel pressure and fuel delivery,      under boost

conditions.    The unit is activated by a solenoid valve that is turned "on"

and "off" via a pressure switch which is set at 0.95 psi.        This pressure

setting is based on the inlet manifold pressure.      The fuel control unit has

a set static pressure of 70 psi.   Maximum static pressure of the OEM fuel

pressure requlator is about 34 psi.    The blower is self lubricated by a

piston—type oil pump.    The oil sump has a capacity of 12 fluid ounces and

uses type "F" automatic transmission fluid.    All OEM emission controls are

left intact.


v.     DISCUSSION OF THE SUPERCHARGER KIT

       A 1993 Mazda MX—5 Miata, powered by a 1.6 liter engine with Sequential

Multiport Fuel Injection, was used for the evaluation of the supercharger

kit.     The dynamometer inertia weight and loading used during the testing

were 2,500 lbs. and 8.8 hp.

       Emission tests conducted by Milton Roy Company consisted of cold—start

CVS—75 emission tests with the supercharger installed on the 1993 MX—5

Miata.    This test was used to compare vehicle exhaust emissions in the

modified configuration with the applicable emission standards.      Test results

are shown below:



                                       Table 1

                      Exhaust Emissions Test Results from
                               Milton Roy Company

                               1993 Mazda MX—5 Miata

                              Exhaust Emissions (am/mi)
Test Mode                       HC           co        NOx
Standard                       0.25         3.4        0.4
Device (w/ applied DF)         0.187        2.153      0.092

Difference                    —0.063      —1.247    —0.308

       Test results submitted by Nelson show that Carbon Monoxide   (CO), Oxides

of Nitrogen (NOx), and Hydrocarbon (HC) exhaust emissions of the MX—5 Miata

vehicle in the modified configuration are below the applicable emission

standards.    The test has shown the Nelson Supercharger model number SN—89,

part no. 11N004, does not reduce the effectiveness of the emissions control

systems of the vehicle.

       Nelson has fulfilled the requirements for the exemption and, therefore,

Executive Order D—246—1 must be issued.


APPENDIX


supenchHancenrs®


              INSTALLATION INSTRUCTIONS

        N E L S O N      S°U P EO R C H A R G E Rrx

           M A Z D A     M I A T A      — M OX 5


    FOUR CYLINDER 1600 CC.     16 VALVES — FUEL INJECTED




                mrowir   ay   paxTtom




             NELSON SUPERCHARGERS—m

        A Division of  NELSON ENTERPRISES
               3724 OVERLAND AVENUE.
              LOS ANGELES, CA. 90034
                  (310) 204—0126
                                        c   i1892


      TR      IQONS   "H W              E         TT          W       P      U


       —Remove the air       flow meter wire harness   from the air   flow meter,
           be careful not to damage the clip or harness. Remove the three
           mounting bolts from  Air Filter / Air Flow Meter Assy. and
           remove it. Separate the two.

II     —All the plumbing from the A.F.M. Assy. to the throttle body must
        be removed. At the throttle end you will notice a black rubber
        sleeve where the clamp sits, save both, it‘s used later.

III    —~The power steering pump (if equipped) must be removed,           to add.
        proper space for the supercharger.

IV     —Using a small container @ 1 quart of capacity, place 1t below
           the power steering olil reservoir and disconnect the return hose
           from the pipe close to frame and drain the fluid from the
           reservoir, and save the fluid.

       —Disconnect the fluid supply hose from the reservoilr by loosening
        the hose clamp, now you can remove it from the chassis.


VI   —Remove the power steering pump from it‘s support bracket, and
      disassemble the belt tensioner from the pump body,

VII —Disconnect the high pressure hose from the pump to the steering
     rack and pinion unit.

VIII—Remove the alternator belt tensioner assy. from the alternator
     and from the engine block, remove the alternator by removing the
     10MM. bolt from the bottom bracket.

IX   —Drain the entire cooling system, and save the coolant. Remove
      the upper radiator hose from the radiator and engine. Then the
         thermostat housing can be   removed.

X    —Remove the lower radiator hose from the radiator and engine and
      remove the metal tube, then remove the metal bracket from the
     chassis.   fig.   #   1

XI   —Remove the 6MM. bolt that holds the alumimum tube to the side
      the a/c compressor and exchange it for the one thats holds the
      electrical wire for the a/c. clutch compressor. Slide the
      protector rubber (P/N 11NBRP) over the bracket, to cover the
      bolt protruding the clamp. Fig. # 2

XII —Remove the breather tube from the side of the valve cover,(the
     chome one).




                               Fig. # 2



                               Page 2


                              INSTALATION
     —Set the timing mark on the crankshaft pulley to T.D.C. Remove all
      four §$MM. bolts, install the additional crank shaft pulley
      (P/N 11N002) in the center of original pulley with the 4 Allen
      head bolts     (P/N 6MAHBAO} Fig. # 3

     —Install the high pressure hose  (P/N 11NHPH) to the P/S—Pump,
      with the hose toward the front. Install the oll supply hose (P/N
      11N0SH} to the inlet elbow, install the P/S—Pump bracket (P/N
      11N005) on top of the pump with bolt (P/N 10MEHB120).
       And install it on the old alternator location with the bolt (P/N
       10MEHB120), now you should connect the high pressure hose end to
       the rack and pinion steering assy.

     —Install P/S oll reservoir on the right side of engine compartement
      next to the strut and behind fuel lines using bolts and brackets
      supplied   (P/N‘s   11N006—1   &   006—2),   connect the   oil   supply hose
      from the pump to the reservolr. Fig. 8 4.
      The oil return will be connected with the hose (P/N 11NLPH) to the
      return pipe on the left side of the frame at front. (see step # IV
      page #1) Fig. # 2

     —~Refill P/S.   reservoilr with saved oll,       add more   if necessary.

     ~Install new lower radiator hose         (P/N 15N182) with 2 clamps
in




      supplied       (P/N 10HC24)


     —Install the alternator bracket (P/N 18N007) on the side of engine
      block ({were the alt. belt tensioner was located)} with 3 supplied
      bolts (P/N 12MEH35) Now you can install the alternator using the
      original bolt, onto the bracket.  Fig. &  . Install the new
      brace (P/N 18N008) with the long 6 mm. bolt ( from the original
      belt tensioner)}.Install the alternator belt (P/N 18N009)        and
      tension it properly. See belt installation diagram.

     —Mount A/C. P/S. Belt tensioner pulley (P/N 11N009) with bracket
     {(P/N 11N011)   with bolts   (P/N 8MEHSO & 8MEH60)

     Install thermostat housing spacer      (P/N 15N018—M)   with original
<o
 1




     bolts and on top of it install the thermostat housing (P/N
     11N007) with new gasket (P/N 11N007G) and bolts (P/N 8MEH30).
     Re—install the temperature sensor,witch was removed from old
     thermostat housing, to the new one.(P/N 11N007) Fig. # 6

     —Install the elbow (P/N 11N222) with the sylicone rubber sleeve
      {P/N 10PO14)   and clamps (P/N 10HC24) to the Air Flow Meter,
      Fig 4# 6. Install the flange  (P/N 11N008) to the air Flow Meter
      with the original nuts, replace gasket if necessary.

10 —~Momentarly install this unit, using the bracket (P/N 13N010) to
     hold it, mounting the bracket under the left 8MM. bolt at the
     thermostat housing spacer (P/N 15N018—M}, and the 6MM. bolts on
     the flange that were installed on the A.F.M.. Insert the
     sylicone sleeve (P/N 10N014) with the black rubber sleeve and
     clamp saved from step # II,  in the throttle body.   Fig. # 5.




                                    Fig. # 4


                                     Page   4


11—Install discharge tube assy.   (P/N‘s 11N220 & 11N221)   on top of
   a/c. compressor. over the rubber protector installed on step # XI
   Fig # 2.  and connect it to the flange (P/N 13N008) at A.F.M.
   with silicone sleeve and clamps provided. (P/N‘s 10P014 & 10H024)
   All the plumbing will be aligned properly later, after the blower
   instalation.

12—Mount blower unit in bracket (P/N 11N001) on marked holes with
   bolts (P/N 516E20) and washers provided. On the 10MM. bolt at the
   bottom of the bracket (P/N 11N001) install the idler pulley
   {P/N 11N023) with nut (P/N 10MEN) and spacer (P/N 11N017)

13—Using the P/S.Pump. original mounting bolt, install it in lower
   hole of bracket (P/N 11N001) and slide it into the P/S bracket,
   install washer and nut. On top of the bracket install the
   serpentine belt tensioner (P/N 11N010) with the black fiber washer
   (P/N 12MBFW) between bracket and tensioner with (P/N 12MEH40) boit
   and washers.Now tighten lower bolt nut. Fig. # 5.
   NOW YOU SHOULD FILL THE BLOWER RESERVOIR WITH    8   OUNCES OF
   A.T.F.  OIL (TYPE F)
      NOTE: See enclosed Paxton Blower Warranty and Maintenance
            Bulletin for further details

14—Install   the serpentine belt and apply tension, then tighten the
  tensioner.
  N 0 T E : It is necessary to install the serpentine drive belt
  very tightly to help compensate for initial stretching. Check
   tension after some mileage of use and readjust belt tension if
   necessary




                              Fig.   #     5



                                  Page 5


15— Now align all the plumbing assy. and A.F.M. accordingly, tighten
    all sleeves clamps. Be sure plumbing tubes won‘t hit against
    frame .

16—Connect new wiring assy.   (P/N 13N001)   to A.F.M.   and original
   harness terminal.

17-Ihstall new upper radiator hose (P/N 11N180) and 2 clamps
   (PN 11HC24) Fig. # 6
18—Re—fill radiator with the coolant saved, add. if needed —

19—Install rubber elbow (P/N 11N111)  and air filter (P/N 11NO0AF) at
   the intake side of blower, tighten clamp (P/N 10HCS52)
   Reconnect the breader rubber tube removed from one end of the
   original breader tube removed on step # XII Page 3, from the
   engine valve cover to the bottom of the air filter assy.

18—Install F.P.R. according the instructions supplied with it.
   Fig. # 4.

19—Reconnect battery.

20—Re—check everything one more time, connections, hoses, belts,
   nuts, hose clamps, blower oil, cranck engine_but DO NOT START IT,
   check for belt alignment, if they all look fine,  YOU CAN START
  THE ENGINE!




                                Page   6


             RELTS INSTALATION DIAGRAMS




FIRST BELT                     SECOND BELT




                 ALL BELTS DIAGRAM



Document Created: 2005-09-01 12:42:30
Document Modified: 2005-09-01 12:42:30

Previous E.O. D-246 | Previous E.O. D-245 | Next E.O. D-246-2 | Next E.O. D-247