Mercury Snowmobiles Discussion Board

are the 75 f/a and 76 lq kohlers the same cranks,crank cases pistons,can you put 76 ign on 75? do the fan cooled kohler engines have same crankshaft.with a 440 f/a cylinder what is maximum bore someone told me once to use a overbore fan piston is this correct?is 7800 rpm obout peek for 340 f/a motor...

I have the red merc 75 rupp nitro f/a question is, are the 75 f/a and 76 liquid kohler engines crankshafs the same? crankases? how about the fan motors any parts the same as 75 f/a motor? will the 76 cdi work on 75, do i have to change stator or is 75 same as 76? what are the best plugs to run,timmi...

looking for pistons,cranks,whole engines 340,440 75 rupp nitro f/a pipes