USMC53 Posted September 16, 2013 Report Share Posted September 16, 2013 Hey guys, my left piston had a ring let go and it scarred my cylinder and piston all to shit. After I had pulled the cylinder off, I grabbed the connecting rod and realized there was a little play side to side, is this normal? Id say its only 1-1.5 mm of play just want to know if I need to replace the crank? Also I ride fast trails, do some minor drag racing and hit the MX track from time to time the internals are all stock specs rightnow, any suggestions on a rebuild? I'd like a 4 mil crank but will probably stick to top end, maybe go high compression? any good top end/cylinder kits out there? Thanks! Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted September 16, 2013 Report Share Posted September 16, 2013 If its down, pull the crank and send it to be trued/welded.... Quote Link to comment Share on other sites More sharing options...
salmon_slayer06 Posted September 20, 2013 Report Share Posted September 20, 2013 The connecting rod small end freeplay is 0.36mm-0.98mm. I just looked in my clymers manual. A 4 mil with ported cylinders, bigger carbs, cool head, domes, advanced timing will wake that thing up nicely. Its also a good time to go through the trans. Its easy, just make sure you take some pictures and make sure you put the c clips on the right way... Quote Link to comment Share on other sites More sharing options...
Juss11 Posted September 21, 2013 Report Share Posted September 21, 2013 Should be no up & down play, a little side to side is ok. Quote Link to comment Share on other sites More sharing options...
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