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oil feed -3 or -4?

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Old 10-26-09, 05:09 PM
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oil feed -3 or -4?
I have a journal bearing Precision T4 PT67 on my 93. I put -4 an inlets and -10 out just wanted some input.
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Old 10-26-09, 05:38 PM
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I'm running 4an inlet, 10an outlet.
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Old 10-26-09, 06:12 PM
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Originally Posted by Viking War Hammer
I'm running 4an inlet, 10an outlet.
Same
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Old 10-26-09, 06:25 PM
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main reason I ask is after 2 days of driving it the turbo started leaking oil in to the exhaust. Im sending it to Precision to get it checked out I just don't want to be back in the same boat when I get it back.
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Old 10-26-09, 06:40 PM
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do you need to run an oil restrictor with that turbo?
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Old 10-26-09, 06:49 PM
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Originally Posted by FCNAred
do you need to run an oil restrictor with that turbo?
I thought bigger was better! lol, yea.....might want to check this out before buy the feed line...
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Old 10-26-09, 10:32 PM
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Check this out-maybe this will help out...

https://www.rx7club.com/showthread.p...+oil+feed+line
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Old 11-02-09, 10:49 PM
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Originally Posted by FCNAred
do you need to run an oil restrictor with that turbo?
Journal bearing turbos need all the oil pressure they can get. Use a restrictor for ball bearing turbos...
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Old 11-03-09, 04:31 PM
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I use a 4an for a journal bearing turbo and a 3an for a ball bearing turbo. Most important is to get the restrictor/fitting size correct. For a journal bearing turbo a 1/8" fitting is perfectly fine. For a ball bearing garret you're looking for a .030" restrictor.
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