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Thread: how much psi can i run???

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  1. 05-09-2011, 01:05 PM #1
    4g64turbo
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    how much psi can i run???

    im in the middle of the dohc swap (evo head) and i want to run turbo but i don't know how much psi i can run safely 7-9 psi?? stock block.....
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  2. 05-09-2011, 01:25 PM #2
    Isaurio
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    To be on the safe side thats about right. Some members are running 15 psi with no problems. are you A/T or M/T?

    Triple Diamond Motors East Cost
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  3. 05-09-2011, 01:38 PM #3
    azgalant
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    Also what kind of pistons do you have?

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  4. 05-09-2011, 01:56 PM #4
    Isaurio
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    he said stock block, i'm guessing stock internals.

    Triple Diamond Motors East Cost
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  5. 05-09-2011, 03:26 PM #5
    reiketsutsukigami
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    ....evo head+stock pistons+boost=boom? at least ive heard the evo head brings the cr way up not sure i know the sonata head brings it down to 8.5:1
    2002
    4g64 dohc turbo 5-speed
    gt30r @20psi stock block,mbc
    2.5" tbe
    evo 8 ecu and maf
    large fmic w/ cx racing intercooler pipes
    wrx injectors @ 100psi fuel pressure
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  6. 05-11-2011, 01:17 AM #6
    underated
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    Quote Originally Posted by reiketsutsukigami View Post
    ....evo head+stock pistons+boost=boom? at least ive heard the evo head brings the cr way up not sure i know the sonata head brings it down to 8.5:1
    larger combustion chamber
    Brandon - 2001 Galant GST 5speed
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  7. 05-11-2011, 01:58 AM #7
    redblower
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    On other forums... over 6 psi and stock internals and tears are formed on people's faces but it takes a while..
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  8. 05-11-2011, 10:01 AM #8
    GOOSEY2099
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    I have a Fully stock motor and boosting 17psi on Daily for 30k miles.
    2.4L - AWD - 5SPEED - PTE 6057 at __PSI w/Wavetrac LSD
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  9. 05-11-2011, 11:39 AM #9
    Isaurio
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    ^ There you have it. when you do this make sure you get a good tune.

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  10. 05-11-2011, 01:03 PM #10
    reiketsutsukigami
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    he said FULLY stock evo head has a much smaller chamber with the sonata ive been boostin 20+psi daily with no issues.
    2002
    4g64 dohc turbo 5-speed
    gt30r @20psi stock block,mbc
    2.5" tbe
    evo 8 ecu and maf
    large fmic w/ cx racing intercooler pipes
    wrx injectors @ 100psi fuel pressure
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  11. 05-11-2011, 03:24 PM #11
    Galant306m
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    real question is what turbo are you running? That will tell you how much psi you should run

    1996 galant s
    finishing up my 2.4L DOHC, 10.5:1, precision sc60, meth injected MONSTER.
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  12. 05-11-2011, 09:18 PM #12
    reiketsutsukigami
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    ^^ really good point lol
    2002
    4g64 dohc turbo 5-speed
    gt30r @20psi stock block,mbc
    2.5" tbe
    evo 8 ecu and maf
    large fmic w/ cx racing intercooler pipes
    wrx injectors @ 100psi fuel pressure
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  13. 05-12-2011, 04:30 AM #13
    Rabbi1991
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    What do you get so much better with a different head unit?
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  14. 05-12-2011, 01:39 PM #14
    reiketsutsukigami
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    lol its not a head unit its the cylinder head on the engine and the only real difference between the heads are the cc's of the combustion chambers and the heads internals which can be swapped between the 2.
    2002
    4g64 dohc turbo 5-speed
    gt30r @20psi stock block,mbc
    2.5" tbe
    evo 8 ecu and maf
    large fmic w/ cx racing intercooler pipes
    wrx injectors @ 100psi fuel pressure
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  15. 05-12-2011, 05:41 PM #15
    Stewi
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    Quote Originally Posted by Galant306m View Post
    real question is what turbo are you running? That will tell you how much psi you should run
    LOL 42R, you can run 1psi.
    Quote Originally Posted by qnz
    well there are talkers and there are do'ers. talkers never do. and do'ers never talk
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  16. 05-12-2011, 06:04 PM #16
    4g64turbo
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    evo 9 turbo is what im wanting to run....
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  17. 05-12-2011, 10:51 PM #17
    4g63lover
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    Quote Originally Posted by GOOSEY2099 View Post
    I have a Fully stock motor and boosting 17psi on Daily for 30k miles.
    You did headstuds right? Or just super safe tune?
    Jigz-TGCIL Sosick Motorsports

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