90civic-ZC

I've gotten conflicting answers in my search...... My B20b is the high compression with a P75 LS head but I have a P8R head I want to throw on it but unsure if I need a one layer or multi layer head gasket and which do I order for, the P8R head or the block?

stucat

Just get the b20 head gasket and then enlarge the dowel holes to fit.

90civic-ZC

Anyone else have anymore info or comment on what he said?

darnizzle8805

iTrader: (1)

The P8R comes from the factory with a 2 layer head gasket. Installing the P8R will lower your compression ratio unless you have had it milled. But just order Stock 3 layer gasket and you will be fine

90civic-ZC

See I've thought about that, but didn't know if it would lower the compression. Do you know how much I should shave the head to get it back to the 9:5-9:6 CR?

darnizzle8805

iTrader: (1)

According to www.zealautowerks.com .045" assuming that you have b20b pistons still. I dont know all of your details so go to that site and playaround with the specs and see what you come up with

alex14

So you have a b20 block, and you have a b20 head, and your asking what gasket you need?

90civic-ZC

Yes, for a low compression B20 P8R head......bigger (vtec) intake valves and bigger combustion chamber. So yes I curious about which head gasket to use, either for the head or buy it for the block. Darnizzle, thanks for the help.....because my friend gave me that head and I would really like to use it. My first build where I'll be swapping heads.

darnizzle8805

iTrader: (1)

No problem, I try not to be an immature *** like some forum members.