56 Exhaust - Welded or not?

[Mark P.]

I have seen options on purchasing a welded or separate component exhaust system. Which components are supposed to be welded? The JG states that it is just the forward section from the mufflers? Is that the only piece that must be welded and where is the break between the muffler and the manifold? Same general area as a C2?

I appreciate the help. My car had no exhaust system on it and I'm trying to get it right.
Mark

[John H.]

Re: 56 Exhaust - Welded or not?

Mark -

See the Assembly Manual, UPC 8, sheet 1.00. The original mufflers had the forward pipe welded to the inlet, and the forward end of that pipe joined the pipe from the exhaust manifold with a hanger and clamp just forward of the frame "X" member, as shown in Circle "A" and View "A".

The muffler outlet pipes were clamped to the tailpipes as shown in View "B", and the tailpipe extensions (that stick through the chrome bumperette bezels) are clamped to the tailpipes as shown in View "D".

Start at the front, just snugging things up, and adjust the hangers and clamps so the pipes don't rattle against the holes in the "X" members, then tighten things, working from front to rear. The tailpipe extensions will probably be a bit too long, so be prepared to shorten them if necessary. Be patient - fixing exhaust-to-frame rattles later on is a PITA.

[Mark P.]

Re: 56 Exhaust - Welded or not?

John,

Thanks for the help. As usual, this is exactly what I need. Major brain cramp on my part not to check the AIM. Too obvious. Anyway, it seems like the section that should be welded would be about 6 feet long? A couple of feet out of the front of the muffler and a couple feet or more out of the back?

The AIM doesn't show a clamp until right before the end extension is joined on and it doesn't show the outlet of the muffler to confirm whether it is welded or clamped right at the muffler. The expanded view "B" is just a hanger and not a joint, correct? The only joints I see are in "A" and "D".

Let me know if you think I am incorrect.

Thanks again,
Mark

[Troy P.]

Re: 56 Exhaust - Welded or not?

I have the same question on the 53's and 54's. Unfortunatley there is no AIM to check that has the exhaust system in it. Anyone know the answer?

[John H.]

Re: 56 Exhaust - Welded or not?

John,

Thanks for the help. As usual, this is exactly what I need. Major brain cramp on my part not to check the AIM. Too obvious. Anyway, it seems like the section that should be welded would be about 6 feet long? A couple of feet out of the front of the muffler and a couple feet or more out of the back? Yes, that's correct.

The AIM doesn't show a clamp until right before the end extension is joined on and it doesn't show the outlet of the muffler to confirm whether it is welded or clamped right at the muffler. The expanded view "B" is just a hanger and not a joint, correct? The only joints I see are in "A" and "D". Yes, that's correct - take a close look at the photo on page 134 of Noland's book.

Let me know if you think I am incorrect.

Thanks again,
Mark

This is to keep the robot happy.

[Rod K.]

Re: 56 Exhaust - Welded or not?

My '57 system from CC has 22-1/2 and 21 inch inlet pipes with significant bends ahead of the mufflers with about 3 inch outlets. Both inlet and outlets are welded directly to the muffler end caps, no intermediate joints. Two piece tail pipe sections clamp to the short rear pipes off the mufflers.