[gromhawk]

My Hotlaps will be coming soon and I was wondering if I should install a new exhaust head gasket as well?
So do you need too?
Also what are the exhaust head bolts torqued too?

 

[AJ Nin]

Yes. Always, according to what I've read for other bikes. I'm sure they're cheap. You wouldn't want to have an exhaust leak and have to take the pipe off again. Page 2-10 of the Service Manual says to use a new one. The diagram shows what looks like a stainless steel clamp that goes around it which it says gets 15 ft. lbs. of torque. OK, the gasket I mentioned is next to the muffler. There is also a gasket next to the header that I think you are talking about. It also should be new each time you disassemble and there are 2 exhaust pipe mounting bolts holding it in place that get 20 ft. lbs. of torque. This gasket just looks like a large o-ring and sells for $4.

 

[elizerr]

Yes. Always, according to what I've read for other bikes. I'm sure they're cheap. You wouldn't want to have an exhaust leak and have to take the pipe off again. Page 2-10 of the Service Manual says to use a new one. The diagram shows what looks like a stainless steel clamp that goes around it which it says gets 15 ft. lbs. of torque. OK, the gasket I mentioned is next to the muffler. There is also a gasket next to the header that I think you are talking about. It also should be new each time you disassemble and there are 2 exhaust pipe mounting bolts holding it in place that get 20 ft. lbs. of torque. This gasket just looks like a large o-ring and sells for $4.

So i installed my Yoshi without even checking the exhaust header gasket,does this mean there is already one on there that i should replace? if so is this the same one
Honda Exhaust Gasket Grom MSX125 NH80 SA50 EZ90 CRF125F 18291 GE2 920 | eBay

 

[Strokd_GE]

I reused my first one probably 5-6 times before it started leaking

 

[gromhawk]

I did end up replacing my gasket with my new exhaust, it was only a $3 part and can be found at any honda shop.

 

[Town Drunk]

Was it a pest to take out?

 

[rynosaur]

i installed the rs-9 not too long ago and used the stocker from the factory exhaust. it was a bit chewed up but i torqued it down and didnt have any leaks.

 

[Strokd_GE]

Was it a pest to take out?

My first one was an absolute bitch, it ended up spiraling apart, my new one just falls out so idk what the difference is

 

[jimmy3hondas]

Try taking a little tool (Craftsman makes one) that looks like an ice pick with a hooked end to remove the gasket.

In the past I've taken a similar and new Honda exhaust gasket, put it in a pair of pliers or channels locks and barely egg shape it, then install. Should not fall out and still seal fine.

 

[rynosaur]

you can also put a tad bit of grease on the face of the gasket and it will stay until you put the header inlet in. (on the face that will be up against the head/jug)

 

[Town Drunk]

I bought a new one when I put my exhaust on and it was an absolute bitch to take out.

 

[instagrom]

do you have a prt number of that?
or is it the same as the link elizerr posted?

 

[gromhawk]

18291-ge2-920

 

[Sco_Pet]

Our bikes are so new, they don't need it. From my experience if its a pretty new bike or has low miles like under 5-600, replacing the gasket would only be necessary if the old one is torn or damaged

 

[NappyNick88]

When I removed my header, A corkscrew looking piece of metal came with it. Is this the factory gasket?

 

[a_morti]

When I removed my header, A corkscrew looking piece of metal came with it. Is this the factory gasket?

Yes. You will need to extract all of it, and replace the gasket. Sometimes you get away with using the old one, but sounds like you won't this time.

 

[NappyNick88]

Yes. You will need to extract all of it, and replace the gasket. Sometimes you get away with using the old one, but sounds like you won't this time.

Thanks for the quick response, bummed I'm gromless until this gasket comes.

 

[rmojo]

Sorry to resurrect an old thread, but this seemed more logical than to start a new one.

I'm currently changing my stock exhaust out for a Brock's Short Meg 2. I could not for the life of me figure out what the exhaust header gasket looked like (I was suspecting some kind of rubber o-ring), but upon searching found this thread. The part number mentioned above (18291-GC8-000) and the eBay link leads me to believe that this metal looking ring is my exhaust gasket:

This is what I'm looking at in the service manual in case someone needed clarification:

If that's the gasket, it seems to be stuck down in the exhaust port. I think I should be able to just mount the exhaust header onto the engine now, correct?

It's a 2015 w/ about 70 miles on it. Thanks in advance!

 

[Matshridn]

Mount it up, you should be good. I'd had to use a pick when I finally replaced mine.