[Question] Performance first marine twin turbos
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Performance first marine twin turbos

  1. #1
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    Default Performance first marine twin turbos

    I recently purchased a performance first marine twin turbo set up for a big block chevy. I haven't been able to find any technical data or installation guides. Does anyone have any information on this set up?
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    Quote Originally Posted by northernlonewolf View Post
    I recently purchased a performance first marine twin turbo set up for a big block chevy. I haven't been able to find any technical data or installation guides. Does anyone have any information on this set up?
    What is it that you want to know?

    Gale Banks, Race Aero, and PFM all made similar turbo kits in the late 70's, originally using Rajay turbos, and most would have used a "bypass" hole in the exhaust housing, rather than wastegates to limit total boost. Ignition timing, adequate fuel supply and proper cooling are all critical to make the engine survive reliably.
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    Default Pfm

    Right now I am trying to figure out the cooling system. I found plenty of info on the gale banks system but I was trying to find anything on the Performance First marine set up. I am trying to install it on a bbc in my spectra 24xs. It is a v drive so I am trying to mount the turbos on the front of the motor.
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    Quote Originally Posted by northernlonewolf View Post
    Right now I am trying to figure out the cooling system. I found plenty of info on the gale banks system but I was trying to find anything on the Performance First marine set up. I am trying to install it on a bbc in my spectra 24xs. It is a v drive so I am trying to mount the turbos on the front of the motor.
    If you found the cooling system diagram for the Banks system, it should work for yours,, cool the exhaust manifolds first, with cool water entering the lowest point and exiting the highest point.
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    Thanks for the info.
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    Default another question

    There are two compression fittings on the hat that bolts on to the intake manifold. Do you know what they are for? Boost gauges perhaps?
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