b18c7/2 buildup issues. help needed

[MrJDMCivic]

hi i have a b18c7 block which im going to bore out to 84mm because i bought these 84mm je pistons , now im not to sure but will i need to get a 84mm headgasket? cause standard is 81mm.. and if so how think should the head gasket be, plus will the b18c2 head fit on with out any issues?

[BLKCRX]

Yes you will need a 84mm headgasket, or bore out a stock gasket from 81mm to 84mm.
Thickness should be .60" (standard)
Regards James

[tinkerbell]

b18c2 head will fit too.

but you need to be aware theat the intake manifold bolt pattern is different... (as well as teh coolant piping outlets)

[V-techWhore]

Yeah if u use b18c2 head u cant use b16a or b18c type R intake manifold.

Mabe et one of those skunk2 or OBX ITR replica IM's

[EG5]

are you going to bore stock sleeve to 84mm?

[online]

stock sleeves and 84mm would be a no no! if it was sleeved you could bring it out a little further than that. i have 85mm gaskets here only..

[ProECU]

and i HOPE you plan to match the cylinder head diameter to the bore diameter also!

[barefootbonzai]

My friend is planning something similar but not that extreme. Just 81 to 82mm bore, does he have to bore his cylinder head to match?

[tinkerbell]

i didnt do it, but i am running relatively low compression... (10:1)

[MrJDMCivic]

so i have to bore out the head as well?

[ProECU]

yes, it will help with resistance to detonation.

Also, round all sharp edges of the piston tops, especially vavle reliefs, by hand with some lightsandpaper, careful to be evenly removing material.