Thread: 88mm VE Build

Payu, has the 88mm piston ve motor been done in pr? If so how do they perform

CP is trying to get the easy way out and not give it a try for a one off setup

every 1 mm will up the compression .2

So if you have a SR16VE piston as your base and leave the dome as is and you keep going up in size you will end up with. This means you get a 92mm piston with a done in the same place like a SR16VE.

13.5 to 1 = 86mm
13.7 to 1 = 87mm
13.9 to 1 = 88mm
14.1 to 1 = 89mm
14.3 to 1 = 90mm
14.5 to 1 = 91mm
14.7 to 1 = 92mm

Please note these numbers are averages, but the concept holds true. You can call me now Cory,

What the fuck cp!

I havent done any for myself just ordered a set of pistons for a friend but I really dont know the outcome but I am very confident that I will yield good numbers and it will be less expensive than a sleeved motor

That would be nice to see, cheap alternative with better than stock bottom end numbers.Thanks payu.

Thanx again andreas!

I'm confused.. your saying that the 90mm cp pistons 12.5 to 1 give more compression that 12.5 to 1?

No just that if the piston has the same sized dome. It will yield a higher cr because your compressing more volume into the same size combustion chamber. A 90mm 12.5:1 piston is still 12.5:1

I will make it easier for you.

A DE flat top 10 to 1 piston. All pistons below are flat top on a DE just bigger. So the only thing that has changed is the piston has gotten larger in 1 mm incraments

86mm = 10 to 1 (factory Piston)
87mm = 10.2 to 1
88mm = 10.4 to 1
89mm = 10.6 to 1
90mm = 10.8 to 1
91mm = 11 to 1
92mm = 11.2 to 1

look at it this way.

the larger (bore) the piston the smaller the dome needs to be to achieve the same cr as a smaller piston.