Quote Originally Posted by big tone View Post
well ive had too many ppl say that running over 12.5 is not good for a track car running at long periods. drags ok but not track as it will prolong the engine..
i do know if im going to be running over 12.5 ill have to be considering other fuels higher than 98. as pinging will come into it with shit fuel. so if i can keep the comp down then i am keeping the engine to a more reliable..

Gen im not doubting what your saying but all i get is ppl say dont do this dont do that but with no evidence to back it up.. if i can run CTR pistons and not have any dramas with theengine then thats where ill head. but ive spoken to a few well known honda builders/tuners and thayve said not to, only 1 honda builder/tuner owner has said it should be fine.
if i run with the 3layer gasket and std comp valves and then CTR piston will i run into and problems? IE p2v clearence? thats all.. and roughly would you know where id be with CR?? cheers

dougie, i have skunk2 pro valves std not high comp.
The reason high compression will kill the life of your engine is because of detonation (ping/engine knock). Your compression will be over 12:0 with CTR pistons and the motor will ping using 98 octane. If you are going to drive this car on the street, forget about the CTR pistons..Unless you are willing to run the car on E85 fuel which will allow you to run really high compression without detonation however you will need new injectors, fuel lines, ect and a ECU TUNE which you will need either way.

I advise keeping your standard ITR pistons if you don't need to re-bore the block or get a set of oversize JDM P30 B16A pistons which are slightly higher comp then the ITR (if you need new pistons). To bump up the compression a little use a combination of shaving the head, high comp valves and a 2 layer gasket. You choose. Use a B series compression calculator off the net to give you a rough idea of the compression you will make. I wouldn't go above 11:6 for daily driving.