Gold Muffler?

Soundguy · Aug 8, 2006

MaineGuy said:
I've never welded...wonder if this is a good project to start with. Got any suggestions for muffler pipe welding?

MG

If yuo are talking about welding steel.. thin steel at that.. use a small rod.. like 1/16 or maybee 5/64.. and a low amp setting. i like 30a and 1/16 for sheetmetal and the like.. and up to 70a and 5/64 for heavier sheet metal.. but watch for burnthru. This is all ac/stick advice.. etc.

I havn't welded sheetmetal with a mig.

As long as you don't have to weld anything to a cast portion.. you should be ok.

Soundguy

Normmm · Aug 8, 2006

if the mounting flange is a square 4 bolt flat steel plate with the muffeler monted to it witha L pipe then I bet that one the grey mardet replace mufflers for about 80 bucks woile fit it. Check out Hoye dot com.

MaineGuy · Aug 8, 2006

Normmm said:
if the mounting flange is a square 4 bolt flat steel plate with the muffeler monted to it witha L pipe then I bet that one the grey mardet replace mufflers for about 80 bucks woile fit it. Check out Hoye dot com.

It is a sguare 4 bolt flat steel plate. The problem is that the pipe drops slightly from the manifold to the muffler to allow the hood to close. A straight shot won't work. The pipe needs to bend downward about an inch away from the manifold. I have not measured the angle.

I'll probably find a pipe/muffle shop and get the job finished. I'm satisfied that the Walker muffer that I purchased will work.
I just can't let the tractor get out of the yard work because of a 3 inch hole in the muffler. The patch held up fine over the past weekend. We've got too much grass to mow and other chores to get done before the MaineGal's folks come from Ohio for their annual August visit.

sandman2234 · Sep 10, 2006

The muffler I found from a 1200 wasn't a bolt on part for my 1100, so I never installed it before I sold it. I gave the newer muffler to the new owner and told him that I would assist in making an adapter. I asked him to draw one up and this is what he came up with.

I thought about the stress on that tubing, and the welds taking the brunt of the weight and abuse of the muffler, and decided to do it differently. He is in Alaska on a cruise for his 30th aniversary and I couldn't ask him any questions, so I just did it. Hopefully it will fit.

I started with a piece of 3.5" x 2" x 30" flat bar, cut a small piece off it and did a clean up on the thickness and took 1/2" off the width. Then started drilling and tapping.
Each of the small holes are threaded 3/8-16 and the bolt pattern on the other side matches the smaller bolt pattern. If he can't thread a bolt into it due to lack of room to access the bolt head, I figure he can use long set screws and leave part of them extended, and use a nut on the outside of the other flange. I didn't have a long set screw of that size handy or I would have posted an example to show. The center hole is 1.5" i.d., so should be enough to allow free breathing. I may need to round off the corners, and maybe take some of the weight off it, by hollowing out between the bolt holes, but for now I want to see if it fits ok before I do any more work on it.
Hopefully his drawing is close enough that my work doesn't need to be redone. However, if it needs to be redone, it is a small price to pay for a friend like him.
David from jax

sandman2234 · Sep 20, 2006

Doesn't work as is, will have to modify it. Should have made it to his drawings! (just kidding!)
The manifold requires bolts to thread into it, which is something I couldn't see, and he didn't mention, but was not a fator in his drawings.
I am waiting on an answer to see if long set screws will work, with me cutting out clearence for an allen wrench.
David from jax