to build a B20/Turbo, wouldnt u want to sleeve the bottom end of the b20? i hear that the stock b20 sleeves especially suck when compared the B18A/B sleeves. But if your only runnin 7-9 psi on the turbo would sleeving it be a neccassary?

 

b20 sleeves? how are they?

 

I've heard rumors the B20 sleeves are stronger, I've heard a lot more that is the exact oposite is true. I personally don't think Honda would put stronger sleeves in a motor they stick in a non-VTEC CRV than they do in their Type R cars but I believe they're physically different sleeves from the other standard B-series engines. I've talked to a few people online with B20's and turbo's who have had pretty sucessful experiences. Basically at low boost, I'd say less than 8psi, your basically more at the mercy of your tuning then you are at the engine physically being pushed beyond it's limits (although you are going to be pushing it beyond what it was orignally designed for). Even a sleeved engine with forged internals isn't going to survive a crappy tuning job that results in lots of detonation at 10 psi. It will last longer but it will still eventually fail.

Someone from before posted a good mantra for turbo Honda's. It's not a matter of if it's going to fail but when. Just something to keep in mind.

 

the b-series motor is weak stock, you're going to have to get it built before sticking a new head on iit (if thats what you're thinking) but then again.... it's a wonderful engine once asembled and it will actually be a steal for the power you will gain over a b18

 

B20 sleeves are the weakest sleeves honda made. Get the block sleeved or you will be building your engine twice.

 

how do the b18b sleeves compare to b20 ones? i hear that stock b18b can handle 12 psi stock for years.

 

I wouldnt say for years but theyt are definately stronger that the B20 sleeves.

 

well how long do u think an LS motor would handle 10 psi. stock internals.

 

Depends on how high you rev the engine. If you doing a constant 8500-9000rpm's your gonna pop it rather quickly.

 

like 7500. and not all that constant. well...lets say constant to be on the safe side.