Hi all , it seems 86 model EA82 carb pistons are 8.7 CR . I'm told they have a dish something like EA82T pistons do but not as deep . Can anyone possibly help me out with pics or part numbers for these pistons .

 

Thanks in advance , cheers Adrian in Australia .

Hi all , it seems 86 model EA82 carb pistons are 8.7 CR . I'm told they have a dish something like EA82T pistons do but not as deep . Can anyone possibly help me out with pics or part numbers for these pistons .

 

Thanks in advance , cheers Adrian in Australia .

 

In USA, EA82 carb pistons are all 9.0:1, and SPFI are 9.5:1

EA81 carb pistons are 8.7

 

GD

Someone here in Australia mentioned that in 1986 only there was an NA version of the EA82 with 8.6 CR pistons , does anyone know anything about these ?

 

I suspect that there is some confusion between EA81 and EA82 pistons and the 8.5 to 8.7 CR range are possibly carby 8.7 CR ones .

 

Can someone tell me for sure if EA81 pistons fit and work in EA82T engines because some would like more than 7.7 and less than 9.0 CR .

 

Cheers Adrian in Australia .

All of them will fit, but the non-turbo pistons will not handle much boost. Collapsed ring lands are usually the result. Additionally the EA81 pistons will not have the valve cut-outs that the EA82 pistons have so in the event of a timing belt failure you will have piston/valve contact.

 

Invest in forged pistons if you are looking for higher boost - non of the stock stuff is worth the trouble.

 

GD