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fredmeister fredmeister is offline
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Join Date: Oct 2002
Location: Baltimore, MD, USA
Posts: 2,235
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Great advice above by hoyabear.
In addition to this test it could be the seals in the turbo. Does this happen only after running high boost for prolonged periods? If so this indicates faulty turbo seals. I had a similar issue that only saw very bad smoking at idle on restart after heavy track use at DE events. During the run there was no smoke only at idle after the car sat between sessions and restarted. Was bad turbo seals.
Try pulling the air filter housing off and seeing if there is lots of oil inside the housing. This would be coming from the crankcase vent lines which indicates oil blowby the piston rings. This would make its way down into the inlet side of the compressor housing. However you mentioned the inlet side of the compressor is very dry so the only way for oil to get in the exhaust system now is thru the exhaust bearing side of the turbo center section or from leaking valve guides.
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.7bar max
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Old 10-21-2010, 10:22 AM
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