Just got a new Yoshimura muffler... gasket question?

[Riker]

The current gasket has less then 1000 miles on it. Do you think I could reuse this one, or do I need to go buy a new one somewhere. I know there is a Honda gasket ( #?? ) that will work, and worst case will drive around to find one of those..Thanks!!

[Chupaca]

on the condition of your current gasket. Check threads on exhaust gaskets to get number. If possible replace it while your making the change..good luck send a pic of the pipe installed..!!

[SPYD1]

18392-mam-000 is the part number. If Hondas are in there and they look fine I wold let it go. If they are stock I would change them.

[Riker]

I am screwed now. The bolt was so rusted it snapped grrrrrrrr. What gets me is the dealer claimed they changed the gasket last time I was there. If that was the case, there is no way that bolt could have rusted shut that tight grrrrrr. I assume I have to use the exact same parts, so now I will have to order and will get a new gasket now......dang it, so much for the weekend .. and thanks for info guys !! Here is the muffler I got...loo.jpg

[Riker]

Another dumb question. This is my first time replacing a muffler . The muffler came with a separate little tube ( not sure what its called ), that slips in the end and screwed on it appears. Am I to assume it is louder without this tube, and if you put it in, it makes it quieter?

[Sny]

Yes, that's a "db killer" that will mellow it out some. Probably drop 4-8db off, which isn't a lot but it might take a bit of the harshness out.

Try it without and see what you think. Only takes a moment to put it in. Once it's in tho, it's hard to get out again (from experience).

[JJW SpyderRider]

The Honda Gasket [goldwing]# 18392-MAM-000 is for the Y pipe connections at the sides of the engine. There is also a single gasket at the muffler connection to the Y pipe. I never had to replace this gasket and don't have a number for it.

[SPYD1]

You are right my bad. That number is 707600547.

[daveinva]

As stated, the muffler gasket is NOT the same size as the Y-gaskets higher up the exhausts. You can get the longer-lasting Honda Goldwing gaskets to replace the BRP Y-gaskets, but for the muffler gasket, you just use the stock BRP one for the Yoshi pipe.

Spyder dealers probably have the muffler gasket in stock, cost less than a dollar (mine did, just call them).

You might not need to replace the muffler gasket if you have low miles on it-- basically, if the muffler gasket comes out of the pipe freely and retains its shape, you could probably reuse it. When I replaced my stock BRP exhaust with the Yoshi pipe, I had ~8000 miles on the stock exhaust-- my muffler gasket had by then baked onto the pipe and could only be removed by breaking it apart into a zillion burnt & crispy pieces with a screwdriver, no reusing it then. Again, my Spyder dealer had the muffler gasket in stock, a quick car trip and I had a replacement in hand.