I have a b20b in my ef hatch , would it hold up to maybe 6 pounds on a good tune??

 

yes

 

 

ok . . I was under the impression that the b20b was high comp. . . ?? I plan on only running about 6-8 pounds at the most. . . ???

 

they arent high comp...just have thinner cylinder walls than the rest of the honda motors

 

imagine the b20b as a very bored out b18.

 

with a full tune it can do wonders.my friend had a bone stock b20 tuned on aem ems,she was boosting 12 psi,350whp,every launch was at revlimit.she had it for a year till a rocker arm snapped.the block is still good

 

i've seen the b20 blocks put to the test when it comes to boost. there's a guy on here somewhere, that pushes 15 psi from a borg warner gt35r, and has no issues. 6psi though? why not aim higher? like 9 or so?

 

so maybe 10 pounds at the most on the b20b with a good tune and I should have no worrys?? thanks for all the replys

 

how much psi of boost you are capable of running means nothing if you don't take into account the size of the snail. for all intensive purposes yes you should be fine running some boost through it, just don't go crazy.

 

b20b is 8.8:1 compression b20z is the higher compression motor ~9.6:1 I believe.

I had a boosted b20b, ran 9 psi on a 60 trim, had no issues whatsoever. It is ALL in the tune. If you have someone that is compitent in tuning, you should have no problems. Don't let people steer you away saying about thin sleeves, there is a guy in FI forums running 600hp on a stock sleeved b20 in his integra.

 

ok thanks a lot guys

 

Bingo.

You need to be asking...."how much FI power can a stock B20 handle and be reliabe?"