The Stovebolt Site Forums The Parking Lot '60-'66 Trucks 250 Exhaust Manifold Bolts

I have an exhaust leak. I did find that the bolts holding the exhaust pipe to the exhaust manifold were loose and corrected that. I also noted that at the back (firewall) of the exhaust manifold a bolt was missing to hold the back "ear" of the manifold. There should be one there right? I currently have six bolts in the manifold. Thanks - Tim-o

The rear manifold bolt from the factory was a stud. Quite often it is replaced with a bolt. Might want to double check.

Hopefully the exhaust donut wasn't beaten up too bad from the bolts being loose.

Larry

a lot of the heads i have seem the very first one and very last one are alignment studs with no threads on ends. they just sick out enough to aid in instillation of manifolds. they can usually, and it is recommended by several knowledgable folks, be removed with a pair of vice grips and regular ones with fine threads on the outter end can be installed. the problem i have had is if manifolds work loose then they warp with heating and cooling cycles. then it will take resurfacing the 2 together to get them to not leak.

Thank you for your help. Now that I think of it - I have seen the "alignment" studs before. The front exhaust manifold hole is filled with a bolt. The rear, I can place a bolt in the hole in the exhaust manifold hole - bit there doesn't seem to be any threads there. Tomorrow - I'll get a mirror out and get a bright light and see what I have there. I did think about the exhaust pipe donut being burnt too. Finally I did think about the resurfacing. All good thoughts - I appreciate your time and efforts. Stay tuned... Tim-o

I have determined that the exhaust leak is at the manifold. I have the non-integrated manifold. Are the gaskets different? Tim-o