The Lobster

So i am replacing two pistons cause well they melted...

anyway i ordered (2) 75.5 cp pistons. I received them and i was wondering before i start tearing them apart that they are right.

I meassured them really quick and from side to side to meassures around 74.83mm does this sound right?

jdm602

if you ordered 75.5mm pistons they should mic almost to 75mm. the bore you need to bore it would be around 75.5mm depending on the piston to wall clearence you want.

you measuring them correct? 1/2" up the skirt?

The Lobster

hmmmm i didnt meassure it correctly.

so i meassure them 1/2" from bottom up? didnt know that.

this is the spec sheet i got with it. according to the number it is the correct item.

jdm602

ahh there you go. it even says on the sheet to measure 0.5" up from bottom of skirt. anyways, now you just gotta get the block bored out to the right spec. if i were you i would bore it over 0.004" instead of 0.0035" but thats just imo.