64 exhaust manifolds

[Ralph H.]

I had previously painted the exhaust manifolds with a well known high heat silvery paint. Now I have removed the manifolds and wish to remove all traces of this paint prior to re installing them on the car. Someone had suggested bead blasting them. Has anyone had experience with removing the paint.? Now for the second question. The studs that hold the exhaust pipes are threaded into the manifolds with a coarse thread and I've been advised that the portion of the studs protruding from the manifolds are of a fine thread and uses a special nut to hold the exhaust pipe to the manifold. My present studs have coarse threads at either end. This post only seems to bring more questions. The manifolds when removed from the block previously had gaskets and now I want to re install without the gaskets. Is there anything special required to ensure the surfaces mate properly prior to reassembly.
Thank You
Ralph Harvey

[Jim T.]

Re: 64 exhaust manifolds

In my experience with my 68 and 70 both ends of the stud to hook up the exhaust pipes and screw into the exhaust manifold has been course threads. The exhaust manifolds I removed from a 63 engine were the same.

[John H.]

Re: 64 exhaust manifolds

The studs that hold the exhaust pipes are threaded into the manifolds with a coarse thread and I've been advised that the portion of the studs protruding from the manifolds are of a fine thread and uses a special nut to hold the exhaust pipe to the manifold. My present studs have coarse threads at either end.

Ralph -

Your present studs are correct; those studs have always been 3/8"-16 thread on both ends. Most auto parts store double-ended studs, however (like Dorman) are fine thread on one end and coarse thread on the other end; that type of stud wasn't used on exhaust manifolds.

[Bill W.]

Re: 64 exhaust manifolds

[quote=Ralph Harvey (28843);533334]I had previously painted the exhaust manifolds with a well known high heat silvery paint. Now I have removed the manifolds and wish to remove all traces of this paint prior to re installing them on the car. Someone had suggested bead blasting them. Has anyone had experience with removing the paint.? Now for the second question. The studs that hold the exhaust pipes are threaded into the manifolds with a coarse thread and I've been advised that the portion of the studs protruding from the manifolds are of a fine thread and uses a special nut to hold the exhaust pipe to the manifold. My present studs have coarse threads at either end. This post only seems to bring more questions. The manifolds when removed from the block previously had gaskets and now I want to re install without the gaskets. Is there anything special required to ensure the surfaces mate properly prior to reassembly.
Thank You

Ralph,
Chances are your '64 exhaust manifolds manifolds are slightly warped from years of heat cycles. A machine shop can fix that for not much $$. If you want to do it yourself, go to Lowe's/Home Depot and buy 4-5 sanding belts for an electric sander. Cut the belt and clamp each end to a known flat surface and start working your manifold. It will take a while but works well. Bill