Rebuilding Yoshi Exhasut - advise wanted

[Arronduke]

I need to re coat the header and pipe on my Yoshi exhaust .

I can only assume that drilling out the rivets is the right way to go and the whole thing will come apart?

Going to get it ceramic coated black again.
I hope bead blasting does not eat to much metal away.

What do you use to repack the baffle its just rattling around in the muffler, might even leave it out.

Any comment from your experience in such matters? Do's and don'ts?





Yes I know its not a GS but its related.

[Arronduke]

This is all the packing left in the muffler, seems like last owner welded it so it is like this.



end has been welded and is rattling around in the muffler.



This bit is not coming off, can the exhaust pipe be coated with this on?

And what the F#ck are these for?



love how it all comes apart.


Last ... what do I do with these bits... what can you do with springs? can they be coated? plated? painted? Im sure the bent washers are copper some I might be able to heat them up with a gas torch and re use them.

[mmattockx]

And what the F#ck are these for?

Those are side branch resonators and cross over tubes that help tune the exhaust resonances. I expect they are there to help deal with the flat spot that all 4-1 pipes have.

Last ... what do I do with these bits... what can you do with springs? can they be coated? plated? painted? Im sure the bent washers are copper some I might be able to heat them up with a gas torch and re use them.

I would clean them up and coat them the same as you are doing with the rest of the pipe. Springs can be cleaned up and painted or coated.

You can anneal copper to reuse those washers. Google it to be sure, but I believe you heat them red hot and then drop in a bucket of room temperature water.


Mark

[Arronduke]

Thanks Mark excellent reply.
cheers

[posplayr]

I have pictures somewhere but have done similar to what you are contemplating.

Yes drill out the rivets. The end caps can be a challenge to get off. I used a rubber hammer and be careful to not dent the outer sleeve.

The baffle on yours is gone, so you will need another. I salvaged a Muzzy that has similar construction by cutting an RS-3 baffle (new off ebay) made out of some really hard corrosion resistant metal and cut and fit it inside.

Instead of fiberglass i would but the coarse stainless steel wool that is available on ebay commonly used for exhaust.

My cans use screws, so perhaps you could tap the holes as many came that way as well.

There are various styles of baffles, this was on a Honda 550 I got NOS and adapted to a GSXR Gen II 4:2:1 Yohsi.