JE looks like it only makes them upto 81.50mm with the GSR head, but make them upto 85mm with the B16 head. Need these for a GSR head with 84-85mm and 9:1 compression.

 

Arias has them for 11:1, 12.3:1, 9.4:1 for the GSR head.
I believe we have the complete ARIAS list on our site.

 

What about 85mm in the low compression?

 

have you tried CP? ask rocket

 

cp???

 

one of the best quality pistons

http://www.cppistons.com/

rocket sells them

 

*CP only seels them for the B18C bore .80 over=3.268
I wanted the B20 bore which are 3.307
*I think there is a difference in the pistons you can use weather its the B16A or B18C head?
*On the JE website they have them for the 9.1 low compression in the B20 bore but only with the B16 head(NOT for the B18C)
Jason

 

yes, the p72 head has different valve angles, then the pr3, but cant remember how much

 

So then CP will not work unless they are custom, on the webite it shows B20 with vtec head but dont say which head guessing its the b16 or type r pr3 head right.

 

really i dont think it matters for your app. since you are going low comp..But then again call them and ask them to be 100% sure

 

With low compreesion should not matter since its dished piston.
I'll call to make sure,Thanks

 

Anyone else with 84mm and gsr head?