S14 vs. M10 crankshaft

[fdovargas]

I've seen several topics here about this mod in the M10 block, but none compares the technical specifications between these two crankshafts. Anyone know? stock weight of both... main dimensions, etc, and the basic advantages of the S14 vs. M10 crank?

Thanks for the info

[inkatouring]

I can only answer the last question, the basic advantage: increased displacement. The s14 crank has a longer stroke than the m10. The s14 motors also had a bigger bore, so the s14 without a bigger bore does not equal 2.3 liters in an m10 block (without mods).

I have an s14 in an m10 block and (beside boring for more displacement -- I have about 2.2 liters), I needed to grind a little so the rods had the necessary clearance. Whether it is worth it all depends on what kind of motor you are building (street, street/track, track, etc.) and how much power you're looking for.

It is more difficult to use one on a tii and what rods and pistons too use become issues. All solveable, but more money....