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1980 911 SC Engine Rebuild smoke.

Engine

Vehicle Information: Model: 911 sc; Year: 1980; Body Type: Coupe; Total Mileage: 112,000 total;

I have about 500 miles on engine rebuild. Just recently there is excessive oil smoke from the tail pipe after the car warms up for about 10 minutes. The smoke lasts for several minutes then leaves almost completely. The engine has all new turbo valves, guides rings and ARP head studs and new 964 cams. Compression and leak down seem okay.

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