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Rusty Exhaust advise.

  • Thread starter Thread starter Skateguy50
  • Start date Start date
S

Skateguy50

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So got the pipes off doing the top end and exhaust pipe #3 rusted through where it clamps to #4, also has a small hole rusted out in the crossover pipe.

My neighbor said I should be fine to get a small piece of pipe and braze it on and do the same for the crossover. My plan was to just sawzall and clamp 2 straight chunks of pipe... but if I get a canister of map gas and brazing rods I could give it a try.

So if I grind the rust down to metal how well will that work? I dont think I took any pictures of that yet but its next on the list to get this thing running again.
 
gotta be pretty clean to braze it... welding will work better on surfaces that aren't that clean.

Post some pics if you can - good news is it sounds like all this is hidden underneath.
 
Yea its in the middle, #2 and #3, but its #3 that needs the fix mostly. I would only do the pipe on #2 if I am taking out the divider.

I am still not sold on it and might just go with two straight pipes and leave the middle out as I think grinding the rust will leave no pipe left at all. A few inches above the divider I could get clean steel to try brazing at but also could just put a clamp and call it good to... maybe I will do both lol.

I can try to get picks up over the weekend, one of the last steps to getting the bike running again but dont want to just slap it back on like I did last time. It was cracked before and I tried that pipe wrap stuff, did nothing but smell bad and burn off. Maybe car wrap cant take the motorcycle heat.
 
May not be the preferred method, but it quieted my bike considerably and the cost was low and such.

Both pipes are rusted where 2 and 3 connect, so there were some pretty big, and loud, holes.

I got a couple tubes of that "Steel" epoxy putty (isn't jb weld but comes in a cylinder tube), a couple pop cans, and some hose clamps. I cut the top and bottom off the cans and cut a slice so they could wrap around the exhaust pipes. I then mixed the putty as directed, and smooshed it around the entire joint. I used a tube for each one.

Then I wrapped the can around the putty, and used three hose clamps to hold it together.

Did that for both sides. Since it is on the underside you can't see 'em looking at the bike. And as I said, it quieted the bike considerably (and it seemed to run better as well) and I saved a bunch of money compared to finding a good used exhaust that I can put to more pressing things.
 
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