Will S50 Pistons fit in my M42

[peytonnoel]

I was wondering if I bored out my head if I could run these pistons on my M42 without any kind of issues? The specs for the S50 are included below in this picture, my M42 still has stock pistons and rods. Also could I use the m42 rods on the s50 pistons?

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[hotdish]

Looks like the wrist pins might be 0.05mm lower on the s50us, but that might just be rounding error. Take this with a grain of salt, I've never owned an m42 and there's still valve clearance and piston skirt clearance to consider.

https://www.r3vlimited.com/board/sho...60&postcount=8

http://www.e30zone.net/e30zonewiki/index.php/M42

[peytonnoel]

So here's some of the pistons info, the rod length difference from the S50 and M42 is 5mm less on the S50.

And assuming they're using millimeters for all measurements the deck height of the M42 is 1.68-2.15mm higher than the deck of the S50.


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