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930gt-40r 930gt-40r is offline
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Join Date: Jan 2007
Location: Boca Raton, FL
Posts: 2,063
Sand_man is right- this ball could F!#k up a ball bearing turbo if it is missing. I am pretty sure that I messed my 37R up just by cranking it over without this ball. Also, If you have a ball bearing unit and are unsure of oil supply, I would switch to a diffrent feed line. Im running a -4 AN line with a check-valve restrictor in line. I ran the check valve because I thought that the oil was draining down into the turbo on shut down and I was right. The check valve is a 996 turbo part # and I got a special adapter from Dan at Speed Gallery.
To control pressure and volume I would go with a -3 OR -4 AN line to the turbo and a .060 restrictor jet for a ball bearing turbo, and a .075 restrictor for a journal bearing turbo. This should fix your problem assuming that you dont have scavanging problems...
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86' 930/GT-40R Sold
94' Rustang GT daily (long gone)
2008 C6/Z51 Corvette
Old 06-11-2007, 04:47 AM
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