AcCali

which is best to boost and why...I've got alot of different answers and wanted to know who knows what there talkin bout...

Cocoa

iTrader: (2)

Jesus I thought this was going to be a sweet ass video.

I'm not going to answer this for you as I don't know. But from personal experience, anything may come out as your best choice depending on what you're wanting to spend.

Going with the dual over head cam engines will give you A LOT more tuning ability just because you can tune the exhaust and intake cams seperately for optimum performance.

The f22 is said to be quite boost friendly for something relatively cheap.

The h22/h23 I would assume would take a little bit more work to deal with, but more rewarding.

That's all I have for you. I'm sure the H/F series gurus will chime in.

Dicorp

1) the h22 can be boosted lightly on stock internals. Anything more than 7-8 psi will require resleeving the original FRM cylinder walls and changing pistons to lower the compression. Comes in open deck and closed deck variants depending on market.
2) the h23 non vtec is more friendly for boost due to lower compression but also shares the same FRM cylinder walls.
3) the f20b is a destroked h22 and is a less known swap since its only reason for existence was to comply with a sub 2.0 liter displacement tax in europe. not enough torque to begin with. i would say skip it.

Blind_Shooter

^^im with him for the most part but i thought the newer prelude 97-up had reinforced cylinder walls that would allow you to run a bit more boost without resleeving....ill have to check on that. i havent seen a turbocharged f20b in person and would assume that it would handle boost ok but why boost that particular motor?? crappy torque like dicorp said. It kinda depends on what you want. im partial to non-vtec/turbo for HIGH horsepower and vtec/turbo for MILD horsepower. is this a drag only motor setup were talking or is this a DD or what??

Dicorp

FRM = Fiber Reinforced Metal. So no, it's not a 97-01 engine feature. It's present across all H series engines.

the 97-01 USDM prelude engine is even worse for boost, because unlike the JDM H22A or USDM H22A1, the H22A4 is an open deck.

SupraManAG

reality of the matter is that you can boost any of the three up to a certain point till you suffer the consequneces. H22s with stock internals have proven to be very unrealiable under forced induction. even at 5lbs. its a ticking bomb. F20Bs should have been named H20B because they are almost identical. they share the same weaknesses. H23 non vtec on the other hand offers the dual overhead cam use with a lower compression bottom end making it more reliable under boost. keep in might that applications for higher than 8lb boost in my opinion need work before the turbo.

AcCali

sounds like the h23a non v-tec would be the best choice...and thats what me and my boy were talkin about...but wanted to get other people's opinion...does anyone know of this set up being done yet

Blind_Shooter

yea its a pretty common setup for drag racing.


www.youtube.com/watch?v=V-Vxdp-_08Y

depending on the setup you use. ie small turbo blah blah blah you can expect any where from 200 to 250 hp/tq with a turbo on h23 @ 8 psi not bad if you ask me

HULK22

it all comes down to your goals and how much money you got and what your willing to spend on it. so think long and hard about what you want first. but if your going to do it do it right pick your motor get it built then you can change your power goals as you progress and you wont have to spend the extra money and down time later. good luck