How much of a difference is the b18b on a b20b?

 

absoulty none. its the same head

 

should i think all non vtec b sieres heads are the same. I would make sure though

 

b18b and b20b have the same head casting.

 

You are wrong. The b18b cams are the best of the 4 non vtec cams, and the b20z has bigger (vtec sized) intake valves. It is the best non vtec head. Im not positive if all b20z heads are like that though. You're best OE setup, from what ive heard, is b18b cams in a b20z head, on a b20z bottom end.

 

The vtec sized valves are the in the P8R spec head.

 

Thank you for clarifying that. I wasn't quite sure which head exactly it was.

 

I never said anything about a b20z. He asked the difference between a b18b and a b20b.

 

Find a P8R head for your b20b. Or go here and peep this info https://honda-tech.com/forums/all-motor-naturally-aspirated-44/b20-non-vtec-faq-guide-including-p8r-head-information-1467903/

 

And nobody questioned what you said. I just offered the OP some advice on a better head to pick.

 

+1 with the P8R head.. flows much better then the P75 castings.

 

I really don't have the money to be changing head or block right now, just got into honda so Im learning as I go although I know part trading is easier with them. I just dont have a lot of choices around where I live.

 

do your research man, good deal to start out now . It took me about two years to pick my motor. For the money B20Bs are the way to go.

 

Just save your money and keep it stock for now. You won't gain a lot from swapping parts without tuning.

GSR or B20Z would be my choice if you're staying B series, or get an H2B kit and drop an H22 in.

 

I was referring the the casting, as in the head gasket would work. Thanks for the advice though i did not know that.

 

Ahh. In that case, you will want the b20 head gasket, as the block has an 84mm bore, as opposed to the 81mm more of the b18

 

Well my block is a b20b and my head are b18. All I have is a leaking cam seal but I bought a complete gasket kit and gonna replace everything. The motor I have has alot of aftermarket parts on it. Its a 97 CR-V. My body is a 95 civic ex.