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BB turbo oil requirements, pressure

Discussion in 'Forced Induction' started by rfrumusa01, Feb 27, 2008.

  1. rfrumusa01

    rfrumusa01 Bean Cakes

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    I have a ball-bearing GT28RS turbo.... On Garrett's website, they claim a ball bearing turbo should see no more than 40-45psi oil pressure (they apparently have small demand for oil). Past 4k RPM's, I see 70-75psi. I need a restrictor... anyone know where to find a restrictor for this turbo or some sort of universal one that will get me down to 40-45 psi max? Also, how much more over stock oil capacity should I be putting into the engine? I know you are supposed to have more to compensate for the turbo lines...

    thanks
     
  2. rfrumusa01

    rfrumusa01 Bean Cakes

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    nobody??? seriously??
     
  3. get_nick

    get_nick These snozzberries taste like snozzberries... VIP

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    i know a couple people running them on their sr20det's. not sure on the oil pressure coming out of the engine, but i haven't heard of them having any problems with the oil pressure.
     
  4. Sko0terMan

    Sko0terMan Member

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  5. rfrumusa01

    rfrumusa01 Bean Cakes

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    thats perfect. thank you. now what about the oil capacity? how much should I have over stock in the engine?
     
  6. Briansol

    Briansol Admins Admin VIP

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    with the correct line size, pressure won't be an issue.

    remember, the line is 3m from the pressure gauge and it drops significantly every inch it has to tavel.

    use a -3an feed, and you'll have no problems.
     
  7. Turbo&Auto

    Turbo&Auto Nick Go FAST!!

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    Def use the restrictor. I was running a GT28R on my other car and it required it as well.
     
  8. silver

    silver Senior Member

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    Garrett recommends very low oil pressures for their BB CHRAs, so a restrictor at the minimum is required (preferably with an inline oil filter as well; 10 micron seems to work well).
     
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