ok so I got a great deal on a b18b and the guy also has a b20 head for like 30 bucks with it. I was wonderin do you guys think it would be worth it to swap the b20 head on the b18 for some added power. this engine will see like 10-12 psi. I have heard that the b20 has bigger valves and cams so it could make more power. what do you guys think. worth it?

 

anybody got any ideas? come on.

 

if its the 84mm combustion chamber head you cant run it on the 81 mm bore

 

well turns out I was wrong I guess that the b20 is the same as a b18 so no gains would be had at all. part numbers match p75 heads. oh well.

 

some b20 heads are p8r is the code have 84mm chambers