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  1. #1
    JPR's Avatar
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    Cool Turbo boost to expect

    Looking for psi numbers (at mani ) input from guys that have run similar to a precision turbo:Billet,antisourge,63A/R,Journal Bearing,T3 turbo at rpm between 8500-9000 rpm. Based on a relatively stock internal set up.
    Appreciate any input. pm me if needed..

    Thanks Jeff


  2. #2
    mac_man_luke's Avatar
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    Id imagine it would be capable of more than your motor will handle

  3. #3
    Orlando Shark's Avatar
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    What turbo? Regardless the beauty about a turbo is that you can run as much boost as you want. On a stock motor I wouldn't push it past 20lbs.

  4. #4
    JPR's Avatar
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    Sorry 5857..Setting wastegate up for around 18. Just trying to figure out at roughly what rpm would it produce that. It's not ideal as I'm only running low boost.

  5. #5
    Got Boost? psycho rxp's Avatar
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    I'm running 20 psi by 4,000 rpm, with, a V-band .83 housing, and dual ball bearing 5857 CEA compressor wheel, with a 9,200 limiter

    a .63 should be around 3,000-3,500 full boost,

    I'm running a 7lb spring in the 38mm Tial wastegate, and a Grimmspeed manual boost controller
    (has a ceramic ball,and SS spring inside) also.

    Over 22 Psi can break drive shafts, and the stock intake manifold. I have mine thru bolted together, and epoxied on the inside to help with that tho.

  6. +1 by:

    JPR

  7. #6
    formerly Gold06RXP Turbo Nick's Avatar
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    I run 21PSI at 8800 RPM. My only mods to the short block are Riva pistons (8.4:1). Stock pistons arent as strong so i dont know that id run 21 PSI on stock pistons. What pistons do you have?

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    JPR

  9. #7
    JPR's Avatar
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    I'm building two motors the first with all lightened internals but I'm testing 9.5.1 compression Rivas with low boost to see how it goes. was more looking at where boost starts. Thanks guys.

  10. #8
    Autism Speaks. Its Time To Listen gOt BoOsT's Avatar
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    Quote Originally Posted by jaffabas View Post
    I'm building two motors the first with all lightened internals but I'm testing 9.5.1 compression Rivas with low boost to see how it goes. was more looking at where boost starts. Thanks guys.
    if you havent already gathered parts yet, you might want to consider increasing displacement with larger bore and longer stroke...thats the best way to really spool a turbo fast!

  11. #9
    JPR's Avatar
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    Check my avatar ! Almost there on one of them, well kinda !
    I'll wait for a borgwarner set up on the second. Should be some around by the time I get to it.

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