i would go the h22a all the way, although turbo is easier for power but h22a more challengin 2 make power or y not go Vtec turbo, or supercharger

 

if you can get a brand new h22 engine, go for it

but if your gonna buy a used jdm engine or a junkyard engine, keep the h23 and put a turbo on it. you don't know what might be wrong with a used motor.

you h23 is already in your car running.
how long will it take to swap an engine, compared to putting on a turbo.

you can also do the h23vtec, that might be easier and more cost effective

 

I think you mean you have an F23.
H23's don't redline that low i'm pretty sure.

 

h23s redline 6500

 

it's about $800 for a complete H22 head and an ECU... so for $800, you gain 50-60 more horses, depending on the state of tuning you go with.

but if you go turbo, it'll cost you at least $2500 for the Greddy kit which will net you 50hp, or $3000 for any other kit to net you about 80hp.

none of the kits on the market have proper fuel tuning to make good power on the prelude. you'll have to go with an alternative system to make better power.

besides, on a stock H22 or H23 block, you're pushing the limit at 7-8psi, which can be as good as 130+hp when tuned properly with a good fuel and ignition controller, or as low as 70hp when used with a cheap fuel management unit.

so if you didnt have the funds to go turbo plus get a real engine management unit, you'll make little more power than you would have with a head swap, and pais 3 times as much.

plus, obviously a headswap will be more realiable, as it's cheaper so you can afford to do it right the first time.

I have an H23 VTEC. runs fine.

 

Yeah, if you arent going to go hog wild with the turbo kit, then stay away. slap the vtec head on it and when you get enough money for a turbo and all the extras to make it run right, get them. Most people slap on a kit and run it hard then ponder why in the world their poor car blew up.

 

even if you get a vtec head and then put a turbo, you would be putting more $$$ and deal with more probs than my h23 turbo prelude.

and my prelude will still keep up or even beat that set up on most cars.
reason is that most people have probs when setting up the head swap and the compression ratio is higher and so is the rpm. by the time you turbo it and push 9 psi, your bound to blow something.IMO

boostlee pics :thumbup:

 

many people have done the head swap and have no probs whatsoever. the head swap doesnt raise the rev limit of the h23, it still stays where it is although the ecu will let you over rev it. compression ratio is easily solved with a thicker head gasket, since the head is already off.

 

o0o0o00 machinehead shut em down. good for you machine. damn my dash board!

 

question. i have a f22, what would be the best thing for me to do? get an h22, get turbo, or can i put a vtec block on it? just wondering, dont know much about engine work.