hi guys, i got a phase1 ej22 block sleved with darton sleeves high performance 97mm to 100mm bore.

and i got a ej25 phase 1 crankshaft.

ej22 bore 97mm
ej25 bore 99.5mm

ej22 crankshaft stroke 75mm
ej25 crankshaft stroke 79mm

ej22 rod journals 52mm
ej25 rod journals 48mm

can i just use ej25 rods, pistons so i can just bore the sleeves from 97 to 99.5 and fit the 2,5 pistons?

this will result in 79mm stroke, 99.5 pistons.

or if i take my ej22 rods (52mm) and machine them to shrink to 48mm (i have done this before in another engines)

this result in 71mm stroke but i need a 2.5 piston to be 4mm higher than the ej22 standar pistons. (to fill the heads)
this stroke setup will be a very high rpm engine

can someone point me out wich piston/rods i should use?

 

Speak to Steve at Roland Allsop, he will be able to advise and source the rods you need.

https://rolandalsop.co.uk/