KDXRIDER.NET

I put this stuff in my 220 to see if it would stop it from boiling at high altitude. I generally ride at about 8500-12000' and on warm days my bike is easy to find. It's the one impersonating a steam locomotive. If Engine Ice made any difference at all, that difference is so small that it escapes my notice. Perhaps it has some benefits at lower altitudes but for me, it was a bust. I'll probably be giving that Evans coolant a try in the future.

Could try running lead Mike!

A little update just to be fair to the Engine Ice folks,

My problem appears to have been caused by a bad radiator cap that never really let the system pressurize. I put a 1.6 cap on and it works pretty good now. So, now I don't know if the EI would have made the motor run cooler or not. I went back to Maxxis Koolanol (sp) for cheapnis sake when I used to have to "top up the coolant and check the gas".

So, don't shy away from the product based on my account. I was wearing my ass for a hat.

Thanks for reporting after you got the cap changed. I was waiting a few months for that report. Good job on swapping it.

You got it fixed !!! Cool bananas !!!

Where did you find a 1.6 cap. All I've been able to find are 1.1 and .9 caps. Thanks!

See if your KX250 cap will fit on your KDX. They make a 1.6 cap for the 2002 KX250, if you know anyone who might have one of those. Perhaps even someone who has looked on the buykawasaki.com site.

From my close friend, Ron:

Part Number: 49085-1073
Description: CAP-ASSY-PRESSURE
Price: $24.09

I got mine at Performance Cycle, local aftermarket only shop in Denver. It was supposed to be for a CRF450R. I also saw that BuyKawasaki lists one for a KX500 that should fit fine (although I would prefer to keep my cap and replace everything else with a KX500). I was going to order that one, but with shipping the price got stupid. The one I ended up with is marketed by SRC - Summers Racing Components. I would think these things are pretty standardized and you could find one to fit from any make of bike. In fact, a radiator guy told me it's the same size as some Mazda pickups. He said the trick is finding the 1.6 rated one. Anyway, keep in mind that it looks like the old cap was just bad. I bet if a had a properly functioning 1.1 rated cap it would have worked too.

Thanks Jason. My KX250 cap does fit. How the hell did you know there was a 1.6 cap for a 2002 KX250?! You are spooky!

Mike: Thanks for the tip that your cap may have just been bad. My cap only leaks on hot days in my garage!!! I've gotten it up to 250 degrees running it and it didn't vent but just about a teaspoon full. It's just nice to know when and where I can find such a thing if I need it. My riding buddy, Doug, has a KX500. I'll check and see what his cap is too.

BOOooOOOoooOO!!

I looked on http://www.buykawasaki.com, of course.

the stock one for a KX500 is 1.1, but they offer the 1.6 as an option.

Nope the 1.1 does not keep the KDX220 engine from boiling over in steep long high altitude climbs. I had the same boiling over problem. I went to the KX500 1.6 cap. They used to offer a 1.8 cap for the KX500 but not anymore. I also have gone to engine ice. I won't know if it helps until this summer when the mountain trails open up again. I hope it works cause this has been the only disappointment I have with my 220.

A friend of mine who is expert in jetting (used to be with a professional race team) says that I need to richen up the idle jet to a 45 to prevent the overheating problem. I may try that too if what I have done does not work.