Engine halves leaking?

[Jay Laifman]

My 2000 Boxster S just had a new IMS bearing, new RMS, new spark plug tubes, actuator seals, new cam chain tensioners and oil separator. It has 160,000 miles. Brought it home and it's leaking oil too much. The shop believes it is a leak from the case itself. They are totally behind the work, I trust them, and I'm bringing it back.

I just like to know what I can about this. Is this a known issue? Is there something else that could be going wrong here?

The car was leaking a lot of oil when I brought it in. The thought was that was caused by the other issues that were addressed. So either there was still something else that was causing the leak (like the case itself) or something was not put on right (which I think is unlikely).

Someone has said that some of the early Ss had an issue with case bolts and seals - and that it has been posted here. The shop did say something about trying to tighten something before giving it back to me to address the oil leak. I searched here and have not found posts about it yet. Anyone know more details about that?

[Jay Laifman]

Ah found Jeff's comment: If you are referring to the bolts that hold the case halves together, if they are weeping at all, they should be replaced with new microencapsulated replacement bolts and then torqued to spec before moving to the next one.

A lot of M96 engines came with bolts that had no sealant on them, and over time they start to weep, even though they are correctly torqued to spec. Tightening them will not stop the problem, replacing them with the correct new bolts will. This is something we always look for when doing an IMS bearing, the RMS, or doing a new clutch.

talk to me about case bolts ...

[JFP in PA]

Those bolts are directly above and below the rear main seal housing, if your shop replaced the RMS and didn't notice the bolts seeping, they owe you an explaination.....