A few questions about my 94 kdx200

david · Post by **david** » 10:34 am Oct 03 2016

125-135 range. I know that's not exact, I glanced at it last night in the manual but can't remember the exact numbers

Edit: I just looked, book says 119-185 usable range

ubareddition · Post by **ubareddition** » 12:03 pm Oct 03 2016

Here some pictures from yesterday. Before the disaster.

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david · Post by **david** » 12:41 pm Oct 03 2016

First big rock or log you go over is going to rip that bicycle kick stand right off and probably dump you on your ear too. If you decide to continue, replace it with the correct one. The H series will fit too.

Friedom · Post by **Friedom** » 01:45 pm Oct 03 2016

Are your head bolts loose?

"Good job, guys. "

Friedom · Post by **Friedom** » 01:46 pm Oct 03 2016

And what kind of 2t oil, gas and ratio did you run?

"Good job, guys. "

ubareddition · Post by **ubareddition** » 03:50 pm Oct 03 2016

Head bolts are not loose just checked. This is the oil I use.

40 to 1.

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Post by **KDXGarage** » 03:56 pm Oct 03 2016

Take the pipe off and look inside.

Dekon · Post by **Dekon** » 04:25 pm Oct 03 2016

Never give up, you've come to far to quit now. Just a suggestion, did you tighten the nut on the water pump shaft? Maybe you over heated it.

ubareddition · Post by **ubareddition** » 04:48 pm Oct 03 2016

Yes I tightened the bolt on the water pump shaft.

I just made a kind of leak down tester from parts I had laying around.

Took the shredder valve out of my compression tester.

even at 20 psi I can still hear hissing out of the pipe and air box.

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ubareddition · Post by **ubareddition** » 04:49 pm Oct 03 2016

Regardless where piston is. But I made sure it was at tdc before starting the test

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Post by **KDXGarage** » 05:12 pm Oct 03 2016

You can't do a leak down or vacuum test with the exhaust exit and intake not plugged.

Post by **KDXGarage** » 05:12 pm Oct 03 2016

And one only pumps it up to about 7 psi. 20 is for popping seals.

ubareddition · Post by **ubareddition** » 05:24 pm Oct 03 2016

How would I go about properly plugging the intake and exhaust?

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ubareddition · Post by **ubareddition** » 05:30 pm Oct 03 2016

Oh I just saw something thru the intake port I didn't want to see

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Post by **KDXGarage** » 05:32 pm Oct 03 2016

Breathe and reply back

ubareddition · Post by **ubareddition** » 05:43 pm Oct 03 2016

So this is what I saw thru the intake port

So I took the jug off and this is what I saw.

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ubareddition · Post by **ubareddition** » 05:49 pm Oct 03 2016

The inside of the cylinder looks fine to me a little scratched but not as bad as the piston. It looks to me that the cylinder scratched the hell out of the piston. Not the other way around.

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ubareddition · Post by **ubareddition** » 05:55 pm Oct 03 2016

Here's some pics of the cylinder to show you guys. Tell me what you think.

Here's a close up of the gouges on the piston

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Post by **KDXGarage** » 10:00 pm Oct 03 2016

4 corner seizure?

ubareddition · Post by **ubareddition** » 10:04 pm Oct 03 2016

I'm not sure what that is

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