GEN2TEG

Currently i am debating how big of a sleeve i should go in my b18a. Ive been thinking to go 84mm but ive been told i need to modify the head and then if god forbid anything happened to my block i would essentially needs a new one.

What's should i do guys HELP! Im leaning to maybe an 83mm sleeve so that in case something does happen i am safe.

E Swift

I've heard that the larger you go, there's a chance it may ping. Don't quote me on that, but thats what I was told when I considered doing it.

jinxproof99

84mm for turbo.

ninesecteg

84mm is fine to run. the only problem is if something goes wrong (torched piston) it doesn't leave you a lot of room to clean up the damage that it has done. you can run 85mm but 86mm is pushing it. but then again if only one sleeve gets damaged you can always get that single sleeve replaced. you can always get the block resleeved again, it will never be scrap. oh yeah take into consideration the fact that by increasing bore size can increase C/R. turbo apps. try to keep bore size at 84 or under just to be safe.

GEN2TEG

Is it true though that you have to modify the head? I have been told that you would have to do so. I am running an LS/VTEC turbo.

avividmemory

i would stick with 83 for now, in case something does happen and you have to bore, theres a little more room for error...
and then you can buy my custom 83mm je's