Maintenance & Technical > KX250 / KX125

New Exhaust Gasket Needed after removing pipe?

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azdirtrider75:
I just took of my pipe (expansion) so I could clean it up and paint it. The copper gasket looks very squished but looks OK. The 2 rubber o-rings are still in great shape and I plan to re-use them. Can anyone share their opinion, experience regarding the copper gasket? Is replacing it a must every time the pipe is removed and re-installed?

Thanks,

KX500freak:
hey ,you maid consider using new o rings too :-)
tell you why ,if the rubber o rings have been there for a while.
they get squished too and are not as fat as new ones .
if you re-use them the pipe mouth can start moving in it,s socket.
do this too long and the connection starts to wear out ..
causing increasing freeplay untill it,s not fitting tight anymore
then it will eat your exhaustport-outlet cuss the pipe is harder then the aloy

so always replace rings rubber & 1 copper ring
then you will have a clean sober and good exhaust-area

azdirtrider75:
Thanks KX500freak,

I'll place my order today. I also searched through the site and found people suggesting to use RTV (heat tolerance sealer / gasket maker type stuff). They said to put a bead between the o-rings to ensure a good seal. What do you think?

KX500freak:
don,t start with that  :-D
kawasaki had made it work without so must we.

this sealant thing is just done much by guys with no or less money,
 or understanding what they,re doing.

just replace the 2 rubber rings and the copper ring every time you remove the pipe.
then you never have to mess around with sealants.

hughes:
On older bikes or a case where the 0-rings were never replaced the high temp RTV helps make up for some of the wear that the cylinder has taken from the pipe over the years.

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