KIPS Main Exhaust Valve

[HUSKwKDX]

It's time to look at my kips valve ('90 KDX200) and probably clean them up. It appears from reading the manual that the sub-valves can be removed without removing the cylinder. (Right?) The manual also indicates that the cylinder MUST be removed inorder to remove the main valve. Is this so? Thanks.

 

[Dazza]

Sub valves can come out without cylinder removal.
Correct me if I am wrong but the cylinder has to come of to remove the main valve as it will interfear with the frame ie:not enough room.

 

[David Trustrum]

and probably clean them up

And probably replace the left hand one that is stripped.

Take the barrel off the bike -the time you save will be wasted dicking around with it in situ. Besides you want to have a good look at the piston & throw another ring in it anyway.

 

[HUSKwKDX]

Thanks for your answers guys.
I had a top-end done in last December and haven't really ridden that much. :( I'll blame the wife. ;) I checked my compression and it was ~173 psi. It's within the service limit in my manual. If, when looking up the exhaust and manipulating the "operating rod" manually and everything looks ok, can I assume there is no strippage?? If there is no room to remove the main valve, then I guess I'll pull the barrel. But I'm always interested in doing the least amount of work (being a civil servant and all). ;)

 

[canyncarvr]

If, when looking up the exhaust and manipulating the "operating rod" manually and everything looks ok, can I assume there is no strippage?

Yes.

In which case....put your pipe back on a go for a ride!!

If it ain't broke..don't fix it. (well...or fix it til it is, then replace it with a better..more$$...part??)

 

[gsuhm]

I pulled mine off (after an admittedly long time between maintenance), and both left and right exhaust valves were stripped -- and the right one was also sheared at the top. That was a quick 70 bucks! The center valve was ok though. Definitely should be inspected and cleaned on a regular basis. They seem pretty fragile!

 

[Dragonfly]

Hey what is this thing you guys are talking about? Can you post the link to where I can investigate this part in more detail. (yes its a newbie question) but mine is a 92kdx200 and I bought it this spring and would like to go through all these parts during the winter to ensure the bikes conditons... thanks

 

[HUSKwKDX]

If I can get out of doing "Home Improvements" this weekend I will tear into the bike and check things out. Riding season starts in a few weeks, I need to get busy!! :aj:

Dragonfly-
The "thing" we are talking about is called the KIPS valve and is very well documented on Candadian Dave's Just KDX website. Click here. :thumb: