Maintenance & Technical > KX500 Original

Is there any difference between the engine in an 87 kx500 and a 98 500?

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idrinkmercury:
Go to autozone/checker/pepboys, they make rubber oil plugs with a wingnut that expand in a hole. Sounds like a job for some JB weld--Don't Trash it! JB weld it! (I think that is the slogan) that stuff is essential. In a fix, I've used it to rebuild water pump housings, with no problems since.

c-152:
I agree - JB wield will hold.  I had a similar situation with a 1975 kd 125.  It had a big hole in the cases so I tore it down, cleaned it really good, scuffed it up a little and JB wielded it.  Never had a problem with leaking or anything.  It was on the bottom of the bike and I never had a skid plate.  The bike ran great for another 4 years until I leaned it against a tree and a branch ripped the air boot off.  I didn?t see it and rode it the rest of the day in the woods, noticed when I was done but it was to late, I lunched the motor. :x

steve1965:
I do know that the 87 has a steel cylinder wall instead of the nikaseal cylinder. I think most of the other parts are close. The steel does not cool as well as the other. I also have a 98 K5 good luck and I hope you get it fixed without having to buy a new one.

gwcrim:
I over tightened the drain on my old CR125.  The side of the boss cracked off.  I put good ol' JB Weld on it and held it together with a hose clamp.  It did drip and need redone once or twice.  But it was far better than a new set of cases.

hughes:

--- Quote from: steve1965 on January 21, 2007, 03:53:25 PM ---I do know that the 87 has a steel cylinder wall instead of the nikaseal cylinder. I think most of the other parts are close. The steel does not cool as well as the other. I also have a 98 K5 good luck and I hope you get it fixed without having to buy a new one.

--- End quote ---


That's incorrect about the steel sleeve for an 87. They came factory with nikaseal cylinders.

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