Porsche 924s dropped inlet valve guide

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Paasty
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Joined: Sat Jan 03, 2015 8:09 pm

Porsche 924s dropped inlet valve guide

#1 Post by Paasty » Sat Jan 03, 2015 8:26 pm

Hi, I recently had the head gasket replaced by a garage, on my 2.5 litre NA 1986 924s. On my first drive it started to produce white smoke on overrun. I stripped it down and discovered the valve guide oil seals were U/S and the inlet valve on the 1st cylinder was wearing it's valve guide. Has anyone heard of this happening before? I was amazed that apart from an occasional hiccup and white smoke eruption it was running ok. The engine had overheated several years ago but had been running untroubled after the seized fan motor was replaced.

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