Thread: XL 250 build
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Old 01-23-2012, 04:17 PM   #8
pommie john OP
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Joined: Apr 2008
Location: Brisvegas, Australia
Oddometer: 1,390
The crank bearings are available from CMSNL in Holland. Man, they're efficient. I have ordered several parts from them. Last time I put in an order on a Sunday ( Australian time) and they arrived on Friday.

The big end was also shot:


That was a bit of fun to fix. The parts are no longer available from anywhere I could find so... after hours searching the internet and various other catalogues, I found that a conrod from a KTM 520 and a crankpin from a XR400 Honda and a bearing from a catalogue would all fit together to make it work. The KTM conrod is 0.5mm longer, but I don't see that as a problem.

After a lot of work with paint stripper, a wire brush and scotchbrite, the engine is looking OK.
It's all together with a megacycle cam and a little bit of cleaning up in the ports, so hopefully it will go OK.
Looking at the photo, I think I'd better tidy up that bench.

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