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MadSpeed's "BPT" Sedan :boostordeath:

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    MadSpeed's "BPT" Sedan :boostordeath:

    Hey guys in new around here my names Jordan im from New Zealand.
    Now what i have got is a 91' Facelift Jap Spec Familia. Im currently rebuilding The BP26 or BPT out of a 91' Mazda GTX and running a G series FWD Trans.Pics up in the next few days. So far the build Specs are:


    Top end....

    BP26 castings
    Acid dipped & Pressure tested
    3 angle valve Job with a 1.5mm valve seat
    Mild/heavy port Job with Inlet port restriction removed
    Head Face Resurfaced
    All new Permaseal Seals
    Stock cams

    Bottom End....
    Stock BPT Block
    Stock BPT pistons
    B6T Rods
    2nd Gen Auto BP "Bignose" crank (has had a polish)
    Acid dipped, Honed and Decked
    Acl Street Series Piston rings and Bearings

    General parts
    Stock GTX ECU
    Stock GTX Y code VAF
    Stock GTX Manifolds (Inlet has had casting marks smoothed and has been polished)
    VF10/VJ20 Hybrid Turbo
    Ported Factory VJ20 Dump pipe
    38mm Wastegate to Atmosphere
    RacePro Blaster II B.O.V (rated 10-25 psi)
    Custom smoothed polished/painted cam cover
    4 Puk Clutch
    Stock GTX Fuel pump
    N/A BP Fuel Rail
    Adjustable Fuel reg
    Mitsubishi Evo FMIC
    2.5" Intercooler piping
    2.5' Straight through Exhaust with one resonator and flexi to a RPS Tip
    Infini Front Rear sway bars
    Infini Lower rear tower brace
    Infini Black loop pile carpet
    Sportline steering wheel
    Superlow KingSprings on kyb shocks
    Advanti 17" Racingstars 17x7's with 205/40/17's

    im sure ive forgotten a bit but anyway i have a few questions!
    I have a b code Rx7 VAF laying around and have done a bit of reading into it to find that you can retune them to run on stock gtx ecu's.

    Running on the Stock GTX Ecu with the B code Vaf What sort of boost will i be able to do? anywhere around 17-18 psi? possible restricted by Stock 270cc Gtx injectors?
    Also ive see people running larger injectors is that possible?
    Maybe Some Mitsubishi Evo items Could do that Job?

    ive Read a bit about Swaping the boards over from a U code to B code but what about from my stock Y code to a B Code?

    Thanks guys just trying to sort out a few things before i put it all back together
    Last edited by MadSpeed; 10-26-2009, 11:04 AM. Reason: edit

    #2
    Stock gtx injectors on a gtx fpr is 330 cc but with the na fpr is 360cc with the gtx injectors. A Y or B or U code should do the job well. I'm running a u code on a gtx setup. Are you putting the wastegate on the manifold or what?
    Cincinnati, ohio Bengals for life
    "Who Dey"

    Comment


      #3
      you suck, I wish we had these here

      but anyway welcome can't wait to see some pics.

      Comment


        #4
        i never knew a stock n/a ran higher fuel pressure. was going to use a adjustable fuel reg. yeah wastegates on the manifold to atmosphere

        Have also just dug out the B code VAF.. its actually a AD5 code off a turbo. these are larger than a b-code? am i able to use that?
        Last edited by MadSpeed; 10-27-2009, 10:09 AM. Reason: add

        Comment


          #5
          Why's everyone so quiet here??

          Comment


            #6

            Last edited by MadSpeed; 10-28-2009, 07:12 AM. Reason: add image

            Comment


              #7
              interplay bumper and rear fog garnish FTW.



              sigpicWorlds first car with GPS was a Mazda



              ~~~~~~~~> Thanks again to member gooseinyou for the familia garnish <~~~~~~~~

              Comment


                #8
                I have no clue about that other VAM. The B code and Y code and the GTRs R code all are the same size. You should think about getting a larger throttlebody and having the intake manifold matched at the throttlebody. R code and the Y code are hard to come by but every now and then you can get your hands on some.
                Cincinnati, ohio Bengals for life
                "Who Dey"

                Comment


                  #9
                  Originally posted by Mr GoD View Post
                  interplay bumper and rear fog garnish FTW.
                  Don't forget driving on the oposite side



                  Car looks good. I think most ppl are quiet because your questions have been answered over and over again.
                  1993 Protege LX-Midnight's shadow SOLD
                  1996 Honda CBR600-Wrecked. Damn Honda crippled me
                  2002 mazda MPV-family truckster SOLD
                  2010 VW routon

                  Originally posted by jay
                  .....they totally underestimated the number of gearheads such as myself that have families but refuse to grow the hell up and stop playing with cars, or that otherwise see the utility of having 4 doors. Obviously I ain't alone, as there are a helluva lotta sti and evo here. Bueler? Beuler? Mazda? Mazda?

                  Comment


                    #10
                    yeah ive already got a stock GTX Vaf. couldnt find anything in search's about the AD5 vaf so thats why i ask

                    Comment


                      #11
                      Originally posted by bomdoutscort View Post
                      Stock gtx injectors on a gtx fpr is 330 cc but with the na fpr is 360cc with the gtx injectors. A Y or B or U code should do the job well. I'm running a u code on a gtx setup. Are you putting the wastegate on the manifold or what?
                      stock Gtx injectors are 270cc so how are they 330cc on stock fpr?

                      Comment


                        #12
                        Originally posted by MadSpeed View Post
                        stock Gtx injectors are 270cc so how are they 330cc on stock fpr?
                        If you're talking about BG/BP GTX injectors, they're 330cc stock. If you put on a n/a FPR they become 360cc.

                        Bpt gtx injector part number-195500-2130 360cc @3 bar 13.6ohm
                        1993 Protege LX-Midnight's shadow SOLD
                        1996 Honda CBR600-Wrecked. Damn Honda crippled me
                        2002 mazda MPV-family truckster SOLD
                        2010 VW routon

                        Originally posted by jay
                        .....they totally underestimated the number of gearheads such as myself that have families but refuse to grow the hell up and stop playing with cars, or that otherwise see the utility of having 4 doors. Obviously I ain't alone, as there are a helluva lotta sti and evo here. Bueler? Beuler? Mazda? Mazda?

                        Comment


                          #13
                          Nice color and good plans subn!

                          1994 Ford Escort GTX
                          1994 Ford Escort LX KLDE

                          Comment


                            #14
                            ok so the n/a runs a higher fuel pressure?
                            anyone know the specs the manual i got says its the same fuel pressure 38-46psi? it also says gtx injectors flow to 87-105cc for 15 seconds to be in spec so times that by 4 to make it a minute and its 348-420cc's per minute. its a bit of a difference which make me want to go get mine flow tested
                            Anyone have the specs for Stock GTX injector resistance?

                            Comment


                              #15
                              Originally posted by MadSpeed View Post
                              ok so the n/a runs a higher fuel pressure?
                              anyone know the specs the manual i got says its the same fuel pressure 38-46psi? it also says gtx injectors flow to 87-105cc for 15 seconds to be in spec so times that by 4 to make it a minute and its 348-420cc's per minute. its a bit of a difference which make me want to go get mine flow tested
                              Anyone have the specs for Stock GTX injector resistance?

                              Well since I have a set of the same injectors right here..

                              This is the flow rating confirmed by witchhunter performance a company many of us have used for injector cleaning

                              you can look up injectors by the part number on the side and they give you the specs like so

                              GTX injectors @ 3bar

                              Cincinnati, ohio Bengals for life
                              "Who Dey"

                              Comment

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