RZR crank problems
Thursday, August 20th, 2009Having an RZR I know of the crank problems they have. If you jump them or do any type of engine mods to them the cranks do not last. You can buy another crank but you will end up with the same problem. These cranks are not designed to hold up if you run them with any extra modifications. We ran NOS and jumped it a few times. I think the combination of the two bent the crankshaft. A guy I know Dave Moore ended up tearing the whole motor apart to inspect it. He studied the design of the motor and saw the flaw the have in it.
We have since rebuilt the motor with high compression pistons, different cam grind, larger valves and other mods. The crank has been trued and welded. Dave has done a custom modification that should keep the crank from bending. So far the engine is putting out around 60 h.p. and the crank is holding up. I believe Dave has fixed the crank issue we have had on the RZR. This is a modification that all RZR owners should do to keep the crank in place.