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Thread: B18C turbo

  1. #49
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    Quote Originally Posted by Limbo View Post
    agreed ^^^^

    The T28 flange adds too much restriction on the GT3s
    given that I do not want to have to change out flanges and alignment on the dump etc though, the T28 rear on the GT 30 is still going to flow more than the 2871R.

    at the moment I am thinking just change out the rear on my existing turbo for a .86 as previously suggested. should only run me about $450 plus tuning
    Last edited by mooshie; 29-09-2009 at 09:45 PM.
    DA9 LS w/JDM SiR B18C turbo
    Looking for older Honda project car pre-1985


  2. #50
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    Quote Originally Posted by mooshie View Post
    given that I do not want to have to change out flanges and alignment on the dump etc though, the T28 rear on the GT 30 is still going to flow more than the 2871R.

    at the moment I am thinking just change out the rear on my existing turbo for a .86 as previously suggested. should only run me about $450 plus tuning
    Yeah I'm running the 0.86 rear and its seems to work well
    161.4KW ATW Tuned By TODA
    EG5 JDM B16A SiR-II TURBO

    13.28@106.6mph 2.117 60ft On RE001

  3. #51
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    Quote Originally Posted by lookingforboost View Post
    with the 30 you would get full boost by about 5000rpm or a touch later but would hit a lot harder once on boost
    looks like i should swap out the .82ar t3 rear gt2871r for a gt3076r with .63ar housing.

    sounds like boost will be similar or maybe slightly better, with much more potential as well :P i gota quote for 1350 US$ delivered to my house maybe i shoudl take it up... hmmm

  4. #52
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    True but you loose the potential of the T3 by not changing the exhaust flange

    Quote Originally Posted by mooshie View Post
    given that I do not want to have to change out flanges and alignment on the dump etc though, the T28 rear on the GT 30 is still going to flow more than the 2871R.

    at the moment I am thinking just change out the rear on my existing turbo for a .86 as previously suggested. should only run me about $450 plus tuning
    Evo IX - THE FINAL EVOLUTION

  5. #53
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    Nov 2007
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    Accord Euro
    Just a quick question while we are on the topic, would a GT35R with a .63 rear housing be too big for a low boost B18C2 application?
    Honda Accord Euro

  6. #54
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    Quote Originally Posted by IEVAQ8 View Post
    as i have mentioned before..............
    here is my graph comparison to t28 with 0.86rear
    and gt3076r with 0.82 rear....
    No offence bro, but the graph shows that you're pulling torque more than a truck.

  7. #55
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    That is torque at the wheels in 4th gear
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    B20VTEC Build Thread

  8. #56
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    shit, never seen that before on any of my dynosheet. Do people mostly measure at the flywheel.

  9. #57
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    all dynos are measuring at wheels not flywheel. Only manufacturers measure at flywheel.

    Normally you loose about 20-25% thru drivetrain, sometimes more depending on the car
    Evo IX - THE FINAL EVOLUTION

  10. #58
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    Quote Originally Posted by kccord View Post
    No offence bro, but the graph shows that you're pulling torque more than a truck.
    no offence taken.......

    but as explained below, its all measured at the wheels not flywheel...

  11. #59
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    Simply put, gearing multiples torque. If you look at the dyno printout it says ratio = 4.940 so to calculate derived torque it would be 1484 / 4.94 = 300Nm which is still a good amount of torque
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    B20VTEC Build Thread

  12. #60
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    bang on, thanks for clarifying.

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