Originally posted by cybertoolzz
SO - what about wether or not i can use the turbo head in THIS RS12S1TR motor? - it fits - that's for sure - the parts listed with the motor show TWO diff part numbers for the std and turbo heads - i believe that it's simply switching to the turbo head - just like on my sts12 - that's all i did to go turbo on my sts12. i just want to be sure i have it correct. damn Italians....
same thing for the crank - TWO part nums;
the question IS - what is DIFFERENT about the two cranks? what makes one crank a turbo and the other non-turbo? the crank on the motor i bought (the motor which is NOT turbo - even though it SAYS it is tubRo!) has the shark groove in the face of the crank... what else does a 'turbo crank' have? a widened inlet port?
still confused...
excellent info here - thx guys! but still no answer to using the turbo head in this rs12s1tr...