6G Celicas Forums

Has anyone out there running a set of JE forged pistons with a CR of 9:1. Im still trying to work out what pistons to put in. I can get some ROSS pistons with the CR of 8.5:1 which is the standard of the GT4 ST205 or some JE forged pistons which are slighly more expensive but have a CR of 9:1. Id rather get the JE's casue its a more well known make but am worried about the extra CR.

If anyone is running these pistons is it still ok to run higher boosts? im looking to get 300bhp in the end??? Will these be ok??

Hi there,

Im new to this site, just found it today and what a site i must say, its just what ive been looking for!!!!!!!!!

Anyway im wondering if anyone can help me work out what pistons i need to run in my GT4 ST205. Its recently droped the rings on pistons 2+3, so im gonna need to get it rebored. Ive been looking at getting some JE pistons for it but the cheapest i can find them for in the UK is £580 for the 86.5mm

Looking on ebay and other american sites im looking at $500 for the same pistons which works out at about £270. quite a significant saving. However trying to work out which ones i need is a bit confusing

Part no 162109 which i have found on ebay http://cgi.ebay.com/ebaymotors/ws/eBayISAP...&category=33617

tells me that the Compression ratio of this piston is 9:1, but the standard celica ST205 is 8.5:1

But this piston is listed for the MR2 so does this mean that the valve chamber is a different size or are there different pistons with the same code at different CR

Any help on this would be greatfully recieved

Cheers Olllie