aus300 perth dyno day,done and dusted...!!!

Discussion in 'Post Event Discussion' started by Jinxed, Apr 28, 2007.

  1. blue32zx

    blue32zx The answer is 42

    thats pretty good...

    on 14psi with stock smics and a full exhaust and pod, mine pulled 228rwkw or 306rwhp...

    hope that gives you a rough idea
     
  2. blue32zx

    blue32zx The answer is 42

    Ah so your the zed miksta and i had a bit of fun with on the way back to the city...good to meet ya mate, maybe have a good chat at the next cruise...:D

     
  3. spikie

    spikie ZER0PSI

    next run

    hopefully before the next run I'll have exhaust, afc and eeprom. that should hopefully lift me up from my almost stock 134.7 kw.
     
  4. Jinxed

    Jinxed Moderator

    you anfd rob will be going head to head for a while i think....

    ok ill start taking bets....
    is that a twenty for spikie.....ok 20 on spikie.....lol:D

     
  5. Z-Force

    Z-Force SHIFT_Charizma

    Agree...

    Interesting find Mike.

    Where did you read that just out of curiosity?

    I've read similar things...

    For example; the stock turbo's don't create power post 18psi. Therefore, 18psi was thought to be the limit. 18psi is high though...it's double what the car was tuned for from the factory. Given that, I don't think it's a safe pressure to run.

    Personally I agree with what you've said. I think with stock turbo's the safe zone to boost is 9 - 14.5psi. I think the danger zone is 15 - 18psi. I think anything over 18psi would be used if you have new turbo's waiting to go in... :)

    I guess it also depends on how hard you run the car and if you're constantly boosting it every time you drive. And when you turn the boost up on 18 year old turbo's you shouldn't really expect them to last as long anyway...something will pop...lol :eek:

    It's good for cheap thrills though isn't it...? ;)

    Rob.
     
  6. MikeH

    MikeH smeg

    it was somewhere on twinturbo.net, search for something in that paragraph i guess and you'll find it. Seems Nissan knew what they were doing when selecting our injectors rather than just being scummy, if we had more fuel to play with, the Z would probably also have a reputation for having weak turbos.
     
  7. vbevan

    vbevan Active Member

    Hmm, I think Nissan were being scummy lol. I think the GT-R has like 440 or something (could be wrong there) but I know the TT supra comes with 550 stock. We got jipped :(
     
  8. Kris

    Kris Kris

    Great day man, well organised, i had a blast!

    It was a real eye opener for a lot of us who were under the impression that our cars were running well. From memory Vaughan's upgrades lost him power, the newly built rx7 was running poorly on boost and my car was running heaps lean even at 15psi where we finally decided to run it. :eek:

    We would never have known if it weren't for the dynos.

    Once again man you've done well.

    Cheers! :D
     
  9. imported_Dan

    imported_Dan New Member

    Not poorly on boost just lean
     
  10. MikeH

    MikeH smeg

    was thinking about this some more.. we don't know what intercoolers were used. If they were stock they'd have a few psi of pressure drop. The turbos may actually be pumping out 19 psi to see 16 psi at the manifold, switch intercoolers and you'd see 18 psi... so not real helpful! I'll see if I can get more info.
     
  11. Z-Force

    Z-Force SHIFT_Charizma

    Yeah...

    Good point.

    Then again, who in their right mind would run stock coolers when running more boost...? That's just crazy talk! :eek:

    I would hope the person who ran this test was using aftermarket larger coolers.

    I wonder at what PSI the stock coolers become obsolete...is there any info on that one? We hear about the turbo's but never the coolers which are directly related to them...weird...

    Cheers
    Rob.
     
  12. ZX2NV

    ZX2NV Z Racing Evolution



    Dont really need bigger injectors for stock turbos although they will max out starting around 4800rpm or so. Fit an aftermarket EFI reg and upgrade all the fuel lines to high grade EFI fuel hose, braided whatever and use EFI fuel clamps by wurth. Dial in around 55-60 psi and you get the extra fuel you need. My cars still maxxes out but we lengthened the injector pulse slightly to keep the AFR's in check.

    Just a thought and nice numbers
     
  13. ZX2NV

    ZX2NV Z Racing Evolution

    pretty close Rob

    The stocker manual turbos can and do take 18psi but not for long periods as the efficiency drops off much past 16psi and leads to more heat higher intake temps and starts a chain reaction or problems. I have mine set to 15psi for the track and 18psi on the boost button for straights and overtake type boost which keeps the EGT's in check.

    Having said that JT has been running around the 18psi mark on his car at the track for ages now with no probs and using a hitec rom chip I think from memory.

    Having a minimum restriction exhaust is key to running bigger reliable boost on the factory snails. My EGT's drop by around 18% when I switch from the street 2.5 inch exhaust with cats and proper mufflers to the 3 inch mandrel track setup which has only rear CF cannons.
     
  14. Eddie

    Eddie New Member

    Intercoolers

    I forgot to mention they are twin large side mount Stillen units which were on the car when I got it.
    Eddie
     

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