Well after the usual abuse of the english language I got the oil filter housing out. There were two bolts in the back that were a real pain to access. I almost dropped the steering rack to get better access - I think I located the leak - there is a discolored area where the adaptor portion connects to the housing, and the o-ring looks scared. I suspect from the heat over the years? See the attached photos.
Waiting on o-rings and gasket - should have today. I little worried about putting those two bolts back in
Wondering if I should include some additional heat insulation around the adaptor.
Kirbert
(Author of the Book, former owner of an '83 XJ-S H.E.)
22
Check the mating face of the filter housing for flatness. Early ones reportedly would distort, resulting in leaks. Supposedly the fix was to switch to a later design housing.
My ‘88 was distorted; I dressed it flat with file before I reassembled it. I assumed it was because someone had been there before; was an all paper gasket gooped up with orange silicone seal. Wasn’t leaking there, it was the middle o ring on mine.
Kirbert
(Author of the Book, former owner of an '83 XJ-S H.E.)
24
Ouch. If they’re still getting distorted on an 1988, clearly the later designs didn’t correct the problem. I guess everyone should check this part for flatness whenever they get an opportunity. And perhaps we should discuss possible fixes, although offhand I can’t think of one short of having John_john fab us some new filter heads out of unobtainium!
You should always check for flatness anytime you reseal a flange-type joint; don’t know how many thousands of times I’ve come across bowed surfaces or pulled up threads.
Got the o-rings and gasket replaced. Dropped the steering rack to get more access. I also installed some flexible heat shield. Not sure it will help- but want try. got the rack back in place, just need to install the cats (need new rings). then it will be time to give it a test. That won’t happen till next weekend - gotta get back to life tomorrow.
