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Old 06-05-2014, 05:46 PM   #28 (permalink)
oil pan 4
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The turbocharger manufacturers tell you to put the oil return above the oil level, to use at least 5/8" return line and keep the slope of the line to at least 25 or 35.
10AN = 5/8" , the return looks almost vertical and the oil return is at the top of the sump I would say it looks good.

Also have you thought about using an oil restrictor?
I read about some tallon guys using them to lessen oil windage inside the turbo and it worked really well.
I think they found that when using a T76 like I put on my diesel that sending the turbo 70psi of oil unrestricted the turbo almost would not spool at all, but when they used a 0.050" restrictor and 15psi of regulated oil pressure they knocked like 10 or 15 seconds off spool up times.
I run oil restrictors on both my turbos.
And the turbochargers have their own oil filter.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
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