600 into a 400
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I have a zxr400 with 89k on the engine. I'm stripping it, cleaning it and turning it into a road bike but I don't have any rush to finish it. I've found a few websites that say a zzr600 engine will slot straight into the zxr400 frame, but they're all scant on the details. Before I set about getting a zzr600 engine, does anyone have any advice or knowledge on this subject?