You're wrong

Wouldn't two copper washes be a better idea

EXCELLENT!! THANK YOU! hone the flashing OFF! that will eliminate a stress point. All HP/race engines have ALL CASTING / FLASH defects REMOVED! Because that will be a weak spot where the block will crack! Standard professional procedure! That's what I'm gonna do! Polish the casting flash OFF! Can only help!

Never come across one with the ball aspring on the end of the actuator rod. Mine have had a nut which fastens the gear directly on to the rod.

So the bit of copper and the worn bolt hole was the 2 fixes? Awesome video

What country are you from?

You taught me something but put that spacer on the outside

I just took apart a kdx engine thinking that rattle is a piston slap. How sensitive are these engines to cylinder/piston clearance? Mine is over spec but the cylinder is also on it's wear limit. I'm thinking, run it till it won't anymore and do a new piston and full recoat of the cylinder

Brilliant

Can anyone point to a good quality video like this of the correct installation and timing of the kips assembly?

Not a bad idea. I had an issue where one of my holes was stripped and had to tap it and throw in another bolt. Mine were gunked up and power valve was siezed up.

After all the alterations, he "stopped rattling"?

Very informative. Did you ever figure out the head gasket issue? Thank you

I've been restoring and rebuilding these bikes for a while. Your analysis is spot on IMO. However, the rattle itself is a fairly benign issue based simply on the fact that these bikes can clock hundreds if not thousands of hours on a single jug (with proper routine maintenance.) Your rattle fix is awesome though. Thank you for sharing!! Your other videos are great also. You're making me a better mechanic!

Thanks for sharing, i Just pulled apart my 2001 kx250 power valves and it's exactly the same issue.

How has your kips mod held up so far? Most every kdx I’ve ever heard has had this rattle, I’m looking at buying one and I’m almost certain it’ll have the same rattle if I had to bet.

Very useful video! thanks for this:)

You are spot on. My kdx has the same issues. They shouldn't rattle they don't when they are brand new. The other issue you can have on the main power valve is, when it wears and rattles it then changes the port timing. Great video.

Thanks! I just traded my 2006 kx250f for a mountain bike and a 1990 kdx 250 it has the rattle I thought it was piston slap but I geuss not your information is of great help, thanks !!!

From America, thanks, mate! That’s great information. The copper strip is brilliant and elegant as a simple and effective remedy! A lot of folks aren’t as open to “home made” remedies because they’re bound by “the official word”. I’ve been figuring out “other than conventional” ways of solving mechanical issues since I first started working on mechanical things 45 years ago. I always appreciate folks who think like me! When the time comes for another top end rebuild, or some other reason I need to remove the KIPS on my 89 KDX, I’ll be using the tips you showed me! Again, bravo! And subscribed! 🤙

What is the thickness of the copper you used mate?

15 views in 35mins mate? I cant get that on my vids in 1 year!