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post-29776-1221026879_thumb.jpgpost-29776-1221026904_thumb.jpgpost-29776-1221026949_thumb.jpgcan any of the serious Porschephiles out there tell me what the large bolt is in the middle at the rear of the engine on my C4S? I noticed that the bolt seems to sit on a slant, but cant tell if this is the design or if its inserted incorrectly. I won't be messing with it until the next visit to my indy, but wonder if the bolt is designed to seat a little bit off kilter to facilitate oil draining or "sump-thing". I was inspired to look by the recent post about some goop on a hose. the bolt is tight, and has no oil seepage. It looks like the oil drain plug, but I haven't done any work myself on the car yet and honestly can't be sure. the wisdom of the renntech will be appreciated.
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Oil pressure relief valve.

Thanks very much. Is it ok that the valve seems to be seated on an angle? Sorry that my pictures don't show that very well. If that might have happened at assembly at the factory then for sure it's not worth messing with.

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It is supposed to be on a slight angle. This is a Boxster which has the same thing.

TP:

Thanks much for this reassuring message. I thought it just might have something to do with oil draining issues, and I appreciate your follow up research. Loren can add this to the "porsche mysteries" forum. Best, jl

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