help finding the right pistons.

[1gAWD92]

Im having a bit of trouble finding the right pistons for my build. here is what i have so for

.040 over bore
stock 2.0l crank
eagle h beams with 21mm wrist pins.

Ive been looking around for the right pistons, but my question is how to measure the stroke. is it the conrod height that i need or the crank measurements, or both?

I need a forged 9.0:1 .040 over piston with 21mm wrist pin. and most of the pistons ive looked at dont really state the wrist pin size. any help would be greatly appreciated.

-Bryce

 

[BogusSVO]

21mm will be the 6 bolt pistons.

As long as you have 150mm rods and a stock crank (88 mm stoke)

 

[1gAWD92]

ok thanks bogusSVO im going to have to double check the length of the rods but thats a great starting point.

what was the mm conversion for .040 over? cause a lot of the pistons ive been looking at, the piston diameter is measured in millimeters.

 

[FalleN4ng31]

ok thanks bogusSVO im going to have to double check the length of the rods but thats a great starting point.

what was the mm conversion for .040 over? cause a lot of the pistons ive been looking at, the piston diameter is measured in millimeters.

Stock bore is 85mm. Every .020" of overbore is equal to .508mm (You're not going to find them measured that way, only in steps of .5mm)

 

[BogusSVO]

1mm = .03937 close math is .040 over

 

[1gAWD92]

ok thanks guys, i just got from my shop and measured the conrods, they are 150mm.

im going to go with Wiseco 9.0:1 forged pistons. think thats going to be the best bang for my buck. but im open to suggestions.