Exhaust Manifold and studs

[Donald H.]

I have one usable (Left Side) exhaust manifold for my 60 and will be buying a repro Right side. I need to buy the stud set that attaches the exhaust to the mainfold.

I saw in an earlier thread that the studs from the regular corvette vendors are not long enough on the right side, i.e. the info in the thread said they need to be somewhat longer than 3" and the ones from the vendors were somewhat less that 3".

Does anyone have recent experience with getting correct length and configuration for the studs on the Right side to fit with the heat riser? Also, correct Nuts?

Also, most everyone sells a stainless steel set, and I see that Corvette Central also sells a steel set. Is the strong recommendation to use SS even though there will be a hit when judged?

Thanks,
Don

[Philip P.]

Re: Exhaust Manifold and studs

Don,
I purchased a set from Corvette Central their #321027 stud and nut set, I did not use the longer ones but I did go measure them they are 3 1/16" end to end, the shorter are 2 9/16" the heat riser is about 1". I think that they may work if you can get them started
Phil Porter
1960 230

[Joe R.]

Re: Exhaust Manifold and studs

Also, most everyone sells a stainless steel set, and I see that Corvette Central also sells a steel set. Is the strong recommendation to use SS even though there will be a hit when judged?

Thanks,
Don

Don,

After all the trouble I had getting the steel studs out of my exhaust manifolds before sending them to Jerry MacNeish, I will definitely be going the stainless route!

Joe

[Pierre J.]

Re: Exhaust Manifold and studs

[Donald H.]

Re: Exhaust Manifold and studs

Thanks all,

The anti-seize is a great suggestion

Now I have to get the existing studs out of my used left side manifold. I've seen all the approaches in other threads. I'll try Kroil, my MAPP torch, etc. Probably end up going to a welding shop to get them to hit it with their oxy-acetylene torch.

Don

[Gene M.]

Re: Exhaust Manifold and studs

Don,
I found the exact same issue, too short. I had a fix. Obtain three 3 1/2 longer 3/8 stainless bolts at hardware store. I cut the hex heads off. Threaded the end where I cut off the hex about 3/4 length with thread die. You can turn down the longer threaded end to create the lead in that is on the originals but not necessary functionally.

[Philip P.]

Re: Exhaust Manifold and studs

Don,
I was under my car so I measured the right side, with every thing tightened, from the manifold flange to the exhaust pipe flange it is about 2 inches. I have the original heat riser installed and original bolts they stick down about 1 inch below the exhaust pipe flange. If you can get everything started I think it should work with 3 inch bolts. That looks to be the length of the original ones anyway. I also used antisieze never can tell.
Phil Porter
1960