I knew I needed more words..
No water jackets.. this is the exhaust manifold to exhaust pipe
connection.. And I have never seen a carriage bolt used on
an engine...
I would think that the manifold would be threaded
to accept the two bolts coming up from underneath
Thanks for replying
yeah, no carriage bolts, but some of the later 318, I'm talking late 80s, manifolds weren't tapped for threads. They had a bolt/nut combo where the nut was a clip nut that simply clipped onto the manifold's flange
