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911nut 911nut is offline
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Join Date: May 2001
Location: Michigan
Posts: 2,513
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You have raw fuel igniting in the turbo all right.
An AFR of 10.5 is a little rich and possibly the cause of the flamethrowing behavior.
I'd be worried about raw gas washing the cylinder walls and reducing lubrication for the piston rings.
How often do you check you oil? If it seems that your engine never uses oil or the oil level increases then I'd suggest that that excess gas is diluting your oil too.
Can you tell us about the condition of your WUR? Have you attempted any tuning of your AFR? Is your engine stock or modded?
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Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 12-07-2008, 07:34 AM
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