just bought a 90 T2 i noticed a exhaust leak but i thought it was an easy fix but i was wrong 2 exhaust manifold broken and the previous owner was blind i guess instead of removing the bolts, he drill a hole button of broken exhaust bolt and went thru the housing and of course he never mention that to me. photo below welder removing broken stud and engine without oil pan (big hole)

Sent from my iPhone using RX7Club

 

Put some rtv on the new stud before you install it, no big deal.

 

or a thread-sert/time-sert. they're blind heli coils which will seal up the threads.

but yeah, silicone would probably also work.

 

what about the hole in housing picture above is with oil pan removed the oil goes thru that hole and comes out the exhaust. what can i do to cover that up?

Sent from my iPhone using RX7Club

 

I don't see a hole?

 

Top left corner.

 

with the exhaust stud in the engine it is sealed up.

i would say TIG it shut, but that isn't going to happen.

 

i was thinking the loctite liquid aluminun to seal hole and the heli coil thingy .

 

if you overthink this issue it is probably going to create more problems. i wouldn't trust any sort of epoxy in there, when it does eventually deteriorate it is going right into the oil pan. probably would not make it past the pickup tube but i feel like you'd just be wasting your time.

 

got it fix with a TIG

Sent from my iPhone using RX7Club