fontyyy wrote:
mc18 I am unsure if a whole engine is a straight swap, mc18 barrels do fit mc21 or 28 cases without issue and vise versa....
Early RS (nf5) top ends can be made to work on NSR cases but it's not a straight swap, for starters the power valves are not cabled up in the same fashion, RS pistons are a different pin size, NSR pistons will be the wrong height etc. Potentially some big power there if you get it all working though.
That era RS also didn't run on unleaded fuel....
MC18 complete motor is a straight swap.
NF5 can happily run unleaded if set up correctly, but I wouldn't advise going that route unless you're hard core and really know what you are getting yourself into.
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Andy.
NSR-WORLD.COM
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