2000 KX500 Project

[Pmcg]

So I still have some play in the kips rod after replacing the seal. I know motorrad had to replace the rod after performing a pressure test. My question is what did you use to apply/test the pressure?  Is there a certain tool?  Should the piston be at bdc?  How much pressure?  Thanks.

[sandblaster]

You can buy a tool or you can make one..

http://www.oem-cycle.com/forum/viewtopic.php?f=40&t=516

Remember to test positive and negative pressure.
Should hold 7lb overnight.

[Pmcg]

Thanks blaster. You site is great. What is the plug in the pictures for?  The exhaust?

[sandblaster]

Yes, one plug is for the exhaust, the other plug is for your carb boot.
I think somewhere on KXriders is a pic of Motorrad's complete set up.
IF nobody chimes in I'll see if I can find it after work today.

[Pmcg]

Poor mans leak tester.

[sandblaster]

Looks good.
The only problem I see is there is no negative pressure gauge or am I missing it?

[Pmcg]

No you're not missing it. I am going to switch the Schafer valve out for a barb and use a mighty vac for the negative.  I wanted to go through the spark plug hole like you did but it seemed a ton more difficult.

[Pmcg]

So the motor would not even come close to  holding vacuum.   Looks like I'm ordering a new kips center valve
M

[Pmcg]

I obviously had to put my head on with the head gasket to pressure test the motor and now since I have to redo the kips valve I had to take the head back off. Did I wreck the gasket?  Are they reusable?  It's a cometic metal gasket. Thanks.

[Pmcg]

Ttt

[Motorrad]

I've reused them with no issue.  But all my stuff is perfectly flat. And lapped together.   So I get away with more.    I ran 3 used gaskets stacked together once.   

[sandblaster]

I obviously had to put my head on with the head gasket to pressure test the motor and now since I have to redo the kips valve I had to take the head back off. Did I wreck the gasket?  Are they reusable?  It's a cometic metal gasket. Thanks.

I have reused mine on occasion but never after running it for a while, but probably could have on a few occasions.

[Pmcg]

Thanks guys!  I lapped the head and obviously didn't run the motor as it was leaking like crazy. I think ill reuse it. I would imagine the leak down test would also show if there were issues with the head gasket.

[Larry Wiechman]

So the motor would not even come close to  holding vacuum.   Looks like I'm ordering a new kips center valve
M

 How can a KIPS center valve cause a vacuum/pressure leak?

[alward25]

maybe he means the actuator rod, maybe