I was wondering what was the potential of a turbo'd 4th gen. Which would be better for turbo H22A or the H23? Like what would be the ET for one? Because i'm getting a new car cus the civic got totalled, but all i had was i/h/e so i dont know much about f/i. What would be a good brand to go with and around what would i run? I'm not sure whether to get another civic and turbo it or a lude cus i like how the ludes are


Thanks!

 

An H23a would be better for boost than and H22a, b/c VTEC and boost don't mix too well. Also you would save some money by getting a prelude Si instead of a prelude VTEC, which are also pretty hard to find.

 

It all depends on the turbo kit you use, from my experiance they are kinda hard to find. The post about the si over the v-tech is true, a v-tech would be faster but cost more because of the v-tech. With 3in exhaust, front mount intercooler and a good turbo with all the ****, AFC, Boost controller etc. a lude si with about 10lbs boost should hit mid 13's an be safe to daily drive.

 

actually the h and f series motors are a pain to turbo, the ecu's don't like FI... so if you plan on doing a turbo prelude also plan on getting a standalone engine management system... on the vtec vs si debate, if the prelude is anything like the integra, where the turbo gsr is faster than the turbo ls, then the vtec will still be faster... just because vtec is rumored to not be good for FI doesn't mean it is... honestly, having a turbo prelude, if i were to do it again, i would be going with a b series engine either in a hatch or an integra... of course once i get my hondata i may change my mind on that...

 

damn...now i havta rethink...around how much would this cost me? I plan on spending at most 5k on the turbo + everything else...and i'd like to have a vtec engine. But then..so you think i should go for another car..say a b18 turbo? Integras are nice but preludes a nicer ..... will i be able to hit low/mid 13's with a turbo'd lude with good driving and slicks? decisions!


Thanks again.

 

oh yeah, on importparts.com i found a DRAG turbo kit for both the si and vtec...are those reliable? ? around what will i hit with it?...

 

i have a drag kit on my vtec... with that and a crappy old exhaust i ran a 15.7... i ran a freakin low 15 before it and a 14.4 with nitrous... the car feels faster now, but for some reason the h and f series ecu's dump too much fuel in vtec, among other things making the car hard to tune with bolt ons... the hondata will run you about $1000...

 

how much boost were you running when you hit 15?? and how much money have you spent on your car engine-wise?

 

Drag makes a great kit for the h22 and Fmax makes a good kit for the h23.Both if done properly will give a good boost(no pun intended)in performance.If reliability is a concern you also might want to call one of the manufactuers directly and talk to them.Youd be surprised how helpful they can be.

 

you don't need to spend 5K just to turbo a prelude, si's are easier because you dont have to worry about controlling the v-tec, do everything right, the correct fuel injectors, colder plugs, a good inter cooler and all the other parts and an H23 will hit mid 13's on the stock motor, if you start building the bottom end of the motor you can go as fast as you want, and run tons of boost but you sacrafice your car as a daily driver then. Also you will have to spend lots of money to keep the front end of the car down. If you build the motor and run more than 10lbs of boost the car will spin the tires down the whole track 1, 2 and 3 even with slicks. Just make sure you do it right, get the boost controller, the afc, blowoff valve, and dont run more boost than the motor can handle. Without the surrounding components the turbo isnt going to help that much.

 

A 15.7 with a prelude VTEC and a turbo kit? Tell me that I misread that. I ran a 15.7 on my first run the first time I was at the strip. I didn't even rev to launch until I saw the car next to me headed down the strip. I was pissed as hell for the whole night after that 15.7. Enough ranting, a boost scrambler will take car of the whole traction issue. 7 psi on the launch, 14 psi in 2nd, and so on.

 

there are numerous people having difficulty getting much power out of their turbo H22A's.

 

thats what I thought. car and driver says it's supposed to run 15.9 1/4 et??
Could be wrong, but it would make sense that it would be easier to tune a h23a vrs the h22a.

 

yeah i left right after i ran the 15.7 i was so embarressed... sucked... and its not my driving, the car just ran out of steam, but it was an 80+ degree day, and the intercooler was pretty heat soaked from idling while waiting in line... i am plannin on going back with my new 3" exhaust once the temperature drops, the exhaust in itself gave the car a lot more power, so hopefully i can break into the 14s, sad as that may be... another way to look at the si vs vtec is that while the higher compression of the vtec may make it a little unstable, it will ultimately produce more power for every lb of boost...

 

I would hope that you would hit low to mid 13 with out slicks with little boost.
I don't know what every ones problem is. I have hit a 14.3 with not even basic bolt on. Also on 16 inch street tires. I will get into the 13 with out boost and all motor with 230 hp ath the fly wheel. IT"S ALL ABOUT THE JDM!!!!

 

there is a guy that has a h23 turbo with a built bottom end that runs very high 11's.....he ran a 12.4 before, but now he has bigger injectors and more boost. he is now going to run 24lbs of boost and be at around 450hp

 

whoa!..the sound of 11's you know if he was running full interior? and how much did it cost? how much boost would you recommend to keep it at the breakpoint of streetability? (lol if thats a word :hammer

 

doh the thing dint really work lol and i plan to build the bottom maybe a few months after the turbo, $$$

 

I'm also having problems with power when I go into the vtec mode. My question is if I disable the vtec by disconnecting the vtec switch under the hood will the ECU still use the Vtec fuel/ignition tables in the upper rpm levels? That way I could try boosting only using the normal cam lobes and fuel/ignition tables.

Thanks

 

When your waiting in line at the strip to race, shut your car off, open the hood, and push it forward until you're next in line. That'll help cool it off some. I think we solved the question of whether to get an H23a or a H22a for boost. I think that you can shut off VTEC using the Apexi VTEC controller? someone want to verify that for me?

 

shutting of vtec is deffinently not the answer

 

Then what should these boost junkies use to get power from their engines above 5500 rpm? How did you solve this problem?

 

hey vic!!

have you had any new luck?? i am just saving for the hondata and hoping that between that and my cam gears i can get some reliable power out of her...

 

Ill let you know what to do in about a week when my standalone is done