heheh FTW!! whats he running under there!

h23 bla 272 is impressive. if you gonnal drop engines, i wouldnt go h series ... but thats opinion hehe i'd make a Fankensien!!! F/H

Apologies to jdmmonkey, I previously misinformed that my motor was a f20b sub assembly with a H22 head.

I have in fact a complete f20b motor in my 5th gen prelude, this is the DOHC VTEC motor, not to be confused with the f22a SOHC found in 4th gen preludes. There is also a f20a SOHC motor.

Cant comment on f22/h22 compatibility, just don't know enough.

However for the f20b motor the H22 intake manifold and exhaust bolted straight on.
Jakes installed the f20b for me and made 102kW at the wheels (RBTS) with mild exhaust, stock header!, SKUNK2 intake manifold and T/B.
We also think the cams are the auto version as the VTEC crossover is very mild.
Planning on stage 2 cams and tri-y header next year to realize the potential of the motor.

A J series! Damn, I couldn't imagine the fat torque curve.

Wayne, no it's good you mentiond the F/H Hybrid - it's valid but down to specific requirements.

Thanks for input Fuji! - Then are you sitting with the blue top instead? Euro-R intake.

look at this quote for a possible replacement to the H22 on a prelude
quote
"Exactly. People actually put the k20z3 head because the valves, springs, and retainers are more robust, designed to handle multiple overrev's.
so k20z3 head, k24 bottom end, and assorted odds and ends off the k24 so it fits correctly.
This is an excellent frankenstein motor, one of the best choices if you want torque along with your horsepower yet .I've already seen one with very mild cams putting out 250 horsepower and 200 torque.

Thanks for sharing Wayne. The trouble one will run into is subframe clearance but there are ways around that. Definitely a worthy swap - ton of aftermarket motor goodies for the motor. K20/K24 isn't a new idea but it is new to the Prelude community considering the Hasport mounts haven't been available forever.