starting to think gt28r wont cut 300rwkw

Discussion in 'Technical' started by Jezza, Oct 22, 2006.

  1. AndyMac

    AndyMac Better than you

    My black car cracked just over 310rwkw on it's second motor without a massive mod list. Although I like to think my mod list was targeted.

    Rebuilt motor with Hi-comp pistons 9:1 (this was luck, the second hand motor was built and I bought it off a wreck)
    Reground cams
    Hi-flowed Stock turbo's
    Dumps and 2.5" exhaust
    555cc injectors
    SAFC
    Water/meth injection pre turbo and pre TB
    18psi

    and the usual things like air filter, etc, etc

    without the water/meth injection the highest I got was 290rwkw.

    I would like to add that I snapped a conrod about 5 months after this, but pulling it apart the compressor's showed no sign of pitting from the injection.
     
  2. 260DET

    260DET Active Member

    Yeh I should have mentioned that it was an old thread, still a good one though.

    Interesting about the GT28RS because I had one of those on a FJ20ET, they are a two liter motor of course. Recall the boost spiking on the dyno and it hitting 330hp momentarily at the wheels but at 15 pounds it would do an easy 250 all day.

    I suspect that the twin cam VG30's strength is its big torque, rather than its outright power. They certainly are a sweet motor to drive.
     
  3. 300zxt

    300zxt Well-Known Member

    :bow2: > FJ20ET
     
  4. BLACK BEAST

    BLACK BEAST SLICKTOP TT R-SPEC

    300+ rwkw is not hard to achieve with a stock engine
    with the right upgrades .and at least high flowed turbos
     
  5. rollin

    rollin First 9

    Im hoping to do 300rwkw with my warm street motor.

    stock pistons, rods crank etc, just newly rebuilt
    stock cams, valves,
    ported + matched heads, ehaust manifolds, upper + lower intake manifolds
    440 injectors + fuel pressure reg.
    High flow stock turbo's
    dumps + 3in exhaust
    20 psi + Decent tune and a SAFC
     
  6. kbro3

    kbro3 Baby oil technician.

    Why do you want a SAFC? why not get an emanage blue and get that tuned? Would be much more effective than an SAFC..

    -Kirill
     
  7. BLACK BEAST

    BLACK BEAST SLICKTOP TT R-SPEC

    depends on what centres you have hi flowed with ?
    gt28r? gt28rs? gt2871?
     
  8. 300zxt

    300zxt Well-Known Member

    Same shift different basket, it's still just a piggy back ecu.
     
  9. rollin

    rollin First 9

    gt28r
     
  10. rollin

    rollin First 9

    I already have a SAFC, cant jsutify the cost of an emanage, id rather splash out on a standalone
     
  11. Jezza

    Jezza New Member

    with 20psi boost you should see those numbers

    20psi boost and the gt28r turbos will make 300rwkw of course supporting mods are a factor and providing the 440cc injectors can supply you with enough juice then you should make that power
     
  12. BLACK BEAST

    BLACK BEAST SLICKTOP TT R-SPEC

    20 psi gt28r centres in stock turbos is different to 20 psi GT28R TURBOS ...lot less volume
     
  13. rollin

    rollin First 9

    as i have done 250 with stock turbos and 370's i think ill go real close with 28r centres and 440's
     
  14. BLACK BEAST

    BLACK BEAST SLICKTOP TT R-SPEC

    should get it ...
     
  15. Wizard

    Wizard Kerb side Prophet

    Agree

    I'm still running with stock auto cams.
    Have GT28r turbos with all the supporting mods, run 310 rwkw at the last dyno day, have also run 321 rwkw on martini 110 octane.

    [​IMG]

     
  16. ZEDZY

    ZEDZY Active Member

    You should raise your rev limiter and see when it starts to really fall off.
     
  17. rollin

    rollin First 9

    Strong graph Wiz. Excellent boost control too.

    Very cool
     
  18. BLACK BEAST

    BLACK BEAST SLICKTOP TT R-SPEC

    That seems like a bit of a late spool for the GT28r?
     
  19. kbro3

    kbro3 Baby oil technician.

    Fair enough if you already have a SAFC. But emanage blue isn't that much pricier than a SAFC..

    -Kirill
     
  20. kbro3

    kbro3 Baby oil technician.

    True they're both piggy backs, but it's a VERY different basket. Ask any tuner the difference between SAFC and emanage blue and you'll get a very long answer.

    -Kirill
     

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