First off, that's a 1988 MC18 R2J, so (within reason) everything's going to be R2J. The likelihood of someone fitting MC16 carbs to is almost zero. Even fitting the set of HRC MC16 carbs I have would be a backwards step compared to the MC18 items, let alone fitting a standard set. It is of course possible, but it's highly unlikely. Don't over think things. A quick and easy way to tell is to check if there's a T.P.S. (throttle position sensor) attached to the RHS of the carbs. The MC16 carbs don't have a T.P.S.

The MC16E stamped on the motor is stamped on all but the HRC cases. MC16E is the type ID for all NSR250R engines.

If you click the Members Content at the top of the page you will see a link to our English Workshop Manual that has been officially authorised by Honda Motor Company. ANY English manual you see elsewhere online has been stolen from us, and I would politely urge you not to support them. We do not sell the manual however, by agreement with Honda. The same goes for the English Online Parts Manual.

I have never, and will never use non-OEM gaskets/seals, so someone else will need to pipe up regarding their experience with any aftermarket gasket kits. One thing I would strongly advise personally though, is to use genuine Honda base gaskets (and preferably head gaskets) as aftermarket items often don't "crush" the same as genuine items. Although this isn't as critical on a stock motor, once you start modifying it becomes increasingly more important. The NSR motor is very susceptible to compression changes, and reacts very negatively to increased compression.
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Andy.
NSR-WORLD.COM

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