Ej20 upgade
 

Hi can anyone help?
I'm rebuilding an ej20 closed deck and I've fitted an ej25 crank and rods but can any1 tell me what pistons to go for due to the stroke being longer ie 2.5 mm
thanks derrick

There is a 4mm difference in the stroke between the EJ20 and EJ25 Derrick and you normally try and compensate with a change of rods and pistons to bring the piston deck height back to where it should be.

It sounds like your getting ahead of yourself if you have already got the bottom end together without working out what pistons you need ??

Mick

Hi Mick it is only 2 mm mate as I've been building engines for over 15 yes mate so the wrist pin only needs too be two mill higher up as that shouldve been your reply ??? Looks like people were right then lol
amigo derrick