lime green o-ring...where did it come from?
 

I'm finishing up a project to fix a broken head stud and I have this green o ring left over that was not replaced as part of my V Reinz head set. Where did it come from?

It looks like one of the rings on the oil pump as pictured in waynes books, but
I DID NOT SPLIT THE CASE... so how could that be?

dimensions are

OD 34mm
ID 25.75 mm
wall height 5.88 mm
wall thickness 4.8mm

Engine oil cooler. There are two green o-rings near the top and a red one near the bottom.

I have large green oh rings on my 4 oil return tubes

this one is somewhat larger than the oil cooler rings (even the big one) and has a square shoulder shape...so it's not from the return tubes

Is there an o ring like this associated with the Clutch?


AND

God Forbid, Is there any concievable way one of those oil pump o rings could get out without splitting the case?

I seem to remember having a couple of those around after my last 2 rebuilds. I don't know what they're for but I didn't seem to need them and there is no way that one could come out of the case.

-Andy

Perhaps the clutch slave cylinder has a seal similar to a brake caliper seal? (I've never torn one down) I don't think that would come in a top-end set...

Virtually impossible for the oil pump seals to escape...
http://forums.pelicanparts.com/uploa...1153195534.jpg

It might be the one for the distributor.

Throttle body o-ring?

I thought the dizzy o-ring was somewhat oval... However as mentioned, your oil-pump orings can't escape if you didn't split the case...

The TB gasket is the big one on the left
http://forums.pelicanparts.com/uploa...1153244082.jpg

well, I took it up to my factory trained guy with 30+ years with 911, and he says its not from my engine.

we are going to re-insert tomorrow.


See you at Putnam Park this weekend!