How big to go or NOT?

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92b20mao

Junior Member
i have my b20z at the shop right now and i was thinking how big to bore out the motor?
I still want to run pump gas and not sleeve the motor. I will be ordering the endyn pistons of the build. Not sure on what bore size on the piston to order. The shop said that he is going to bore out the motor .5mm.
If anyone out there can help me out?
 
If they are going to be boring it .5mm, then it would be at 84.5 mm, get high compression Endyn rollerwave 84.5mm pistons.
 
I thought you posted this question already and it got answered...
 
That's fine... that thread got wasted anyway. :)

I would just bore to 84.5mm to clean it up. Your stock sleeve .5mm over will be just fine for an all motor setup.
 
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