jspinn13

hey all i am thinking about boosting (turbo) my 95 prelude with an h22a1 swap.
but i know that when you go boost things break a lot especially if its your daily driver.

so here is my dilemma. should i go with the turbo. or should i supercharge it? which would be more efficient and have the best gains without having to fix my car everytime i push it?

also i saw a built motor somewhere that had 16.5:1 compression ratio. so i have been thinking of going all motor now too. would this option be less likely to break because there is no forced induction? how much horsepower could i gain if i just go all motor?

i dont have another daily driver if this car breaks so im trying to go with the best power upgrade thats less likely to break.

thanks

Tee-Dot

Short answer:

Boosting a daily driver is a terrible idea.

btw, there are F/I and N/A forums. Start reading...

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MikeJuvi07

if you have a h22a1. stay motor. Going FI the "right way" includes removing the engine and rebuilding it with new forged parts to withstand all the extra horsepower. Just rebuilding your engine with forged parts is going to cost you... 4000$??

I saw this kid who had a 5th gen prelude with only 60000 on the engine and was pushing 14 psi on the stock motor. lol he can say good bye to that car real soon. I've heard you can safely boost a stock engine up to 6 psi but eventually your "nerves of steel" are going to push it higher because someone who doesnt know what theyre talking about is going to convince you and say its ok.

Plus i've heard the vtec messes with the turbo also. And I'm not sure what this next part means but the h22a1 is an "open deck" and that also is a reason why its not safe to turbo.


Go motor. Start off with buying minor bolt on stuff then go a little deeper, and maybe eventually getting high comp. pistons. You will have a reliable fast DD.

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jspinn13

ok i think i will stay motor, but with hi comp pistons, and new valves, retainers, cams ect... basically an all motor that is built for it how much extra horsepower do you think i can get? like i said before i saw a fully built engine with 16.5:1 CR and i was like .... 0.0... and if you build it like that then you could NOS it... but i doubt ill go that way

edludesi

for what i've read h-series isn't very good turbo applications(frm)
this is the engine i want lol
K24 VTEC Versus G23 VTEC - Tech Knowledge - Import Tuner Magazine
G23 Vtec
maybe it'll give you an idea

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1991 Acura Legend LS Daily
1996 Prelude Si Project
1990 Civic DX hatchback Sold
2009 250R Ninja S.E Sold

jspinn13

i guess but with that the only thing you are really getting is .1 liters. you might as well get an h23 put h22 vtec head, cams, gears, hi comp. pisons. rods (maybe.) and you have a good hp and better torque there. and you dont have to modify mounts if you are using a prelude like i am.

or get an h22 type s. (220 hp, and more torque than the k or any other h) and put more aggressive cams. the only thing you are missing is the .1 liter and again you dont have to modify mounts. probaby both these options are realatively cheaper.

indylude18

Bad idea. That has been proven time and time again to be unreliable. You also don't gain much power, as the H23 bottom end can't handle high revs as well as the H22, and the H22 makes power on the top end. The extra displacement is good for a little extra torque, but not enough to warrant the poor reliability.

Honda also made an H23 with vtec that was available in JDM accord wagons...much more reliable than a thrown together frankenmotor.

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Bluetop H23a Vtec Swapped NHBP '99 Base

jspinn13

i knew that they dont gain much power overall its only a 2 hp gain if your lucky, i just thought that it would be better for boost but hey i could be wrong. i thought sleeve the h23 (darton) and then low comp pistons, even the stock might be ok. and then boost! lol