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 Topic: 1989 NSR250R engine rebuild 







F@ster

 
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1989 NSR250R engine rebuild

F@ster » Thu May 04, 2023 6:36 am

HI Guys,

I'm new to the forum, but not new to NSR's. I rode an '88 MC18 R2J in high school in the 90's, but unfortunately the bike was damaged beyond repair in 2009 in a crash. I've recently bought a 1989 MC18 R5K in crates, and intend to build it up and restore along the way. The biggest issue I'm, facing at the moment is that the engine was stripped for rebuild (I have a local guy in South Africa to re-do the cylinders) but the crankcase has not been split. As there is corrosion on the crankshaft I think it would be prudent to rebuild the bottom end while it's stripped this far. From what I can tell on the rebuild pages on this site, a special tool is needed to remove the clutch, what they call a "special fabricated clutch holder" but there is little information on how to make the tool. My question at this stage is this: Where can I purchase the clutch holder, and the flywheel puller from that ships to South Africa?

I have the parts catalogue (in japanese) and workshop manual (in english), but any leads for required bearings and seals for the crankshaft rebuild would be much appreciated.

This is going to be a long-term project for me, as the seller unfortunately did not have any bodywork for the bike, and the exhausts seem to be modified from an R2J to fit, so will most likely need replacing to achieve the finish I'm aiming for. I don't have much to show at this stage besides a pic of some crates!
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