a20 and es3 crank/rod/piston spec?

[Christofur]

Im looking to put a20 pistons in my es3 motor. so need to know the crank/rod/piston spec to see what i need to get to do this.

anyone know the spec for those a20 motors.


Edit: i did do some searching but just got confused half way through about boring out the motor.

[rjudgey]

82.75mm i believe but first thing you need to do is see if Felpro do their nice racing blue gaskets for the ES/ET motor still, we've had a few people buy them recently and some have gotten them and others (myself) have had a cheap knock off that doesn't have a large enough bore to fit the A20 pistons.
Also the best pistons to use are the A20A3/4 ones you might just get away with 83mm ones but very tight to the gasket you may have to have the edge of the piston machined a little to clear probably just be ok though. Or have custom forged pistons made will last longer and be lighter as well as get a much better CR ratio if they are totally flat and have just 3 valve pockets machined into them rather than 4 and a dish in the top.