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[QUOTE="TexKDX, post: 621587, member: 16276"]
Best method of decarb is a glass beader.  Take the jug, piston, and head to a local dirt bike tuner.  Let him measure the bore and piston and decarb/reassemble the power valve and clean out the ports and head.  Most likely you'll be putting a piston in it anyway, but these guys like to see what came out of the motor.  A local dealer MAY have the expertise - it is up to you to inventory what kind of skills they have there.

I did the head, piston crown, and ports on my '74 TY250 last week with brake cleaner and a small rounded edge screwdriver.

The pipe?  Lots of methods for this.   The "best" is soak it with diesel oil and set it on fire, but that is tough on the plated pipes.  There is the inner cable on a drill method too.  And the soak it in WD-40 and bang on the outside, followed up with Simple Green and alot of water.  You might be able to get a pressure washer nozzle in there to blast some of it away.

If money is an issue, then do your best to find a local rider that knows his way around these KTM top ends.  Pretty simple really, but easly to screw up if you don't have well developed mechanical skills.  If you lived by me I'd say bring it over and we'd rip into it, but you are about 1200 miles away.

Leo.
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