do 583 and 670 summit engines have the same crank

[barthasbite]

Do the 583 and 670 engines in a 94 summit have the same bottom end, same block with different bore???
Can anyone tell me if there was a 670 in 94, I only seem to find pistons for 95 and up??

 

[magnet]

Do the 583 and 670 engines in a 94 summit have the same bottom end, same block with different bore???
Can anyone tell me if there was a 670 in 94, I only seem to find pistons for 95 and up??

i believe thats because there wasn't a 670 prior to 95.
also the bottom ends are completly different. not even close.

 

[Modman]

The 670 was around prior to 94, it was in the Mach 1 in 1993. 1992 carried the 617 Rotax if I remember right.

Something in my head is nagging me that the 470 and the 670 bottom ends were the same though........