I have a 1994 Honda prelude Si. It is a dohc f22b. Is that good? I thought i had an h23a1 until i looked at the stamp on the block.

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The f22b is practically the same as the h23a1. They were used in Japanese Preludes(4th gens).

Welcome the forum!

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'14 Impreza
'04 TSX sold
'90 Si sold


Everyone! Resource guides are here:
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oh ok I understand. Are the blocks exactly the same?

This is the question that has haunted the Prelude scene for many years. They are very similar engines, yet also very different...

Specs:
F22B:
9.5:1
148 lb/ft @ 5000RPM
158 hp @ 6000RPM

H23A1:
9.8:1
156 lb/ft @ 4500RPM
160 hp @ 5800 RPM

With the compression that low I would boost the F22b...

welcome to the forum. boost? :)

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Thanks for the info guys! Tell me what you would do... Boost or swap?
I need more power! without spending a fortune.

And also is this the block that already has the iron sleeves?

being that it's an F series i would assume so

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Probably much better to go with boost! Ive Always wanted a boosted car anyway.

DSM Setup Here i come! ;)

F22A1 is better for boost. Your motor is closer to H23 eventho its bearing an F-series name. Since it's closer to an H-series motor, it's better to keep it N/A, but that's just my opinion.

it's simliar but has lower compression, so boost would be perfect. Only thing that would concern me is the availability of aftermarket/replacement parts for the block. I'd imagine the head is the same as the h23 but not sure about the block. Hopefully you do not have FRM sleeves, if that's the case boost i'm sure it could handle more than vtec motors stock.

check this guy's build to give you an example of what to expect outta the jdm f22b:
http://www.cb7tuner.com/vbb/showthread.php?t=102932

I absolutely Love those numbers!!

i ran 8lbs for three years on a stock block h23. dsm build.
i'm ripping everything and redoing everything on my 4th gen. so i'll have a dsm setup if you're interested. and to my knowledge the f22 is the same exhaust manifold bolt pattern as the h23.

Yeah im planning on doing the DSM Build as soon as i get the money. And yeah the bolt pattern is the same.