boost questions on h22a4??

[prelude1911]

I have a fully built H22A4 engine in my 1997 Honda Prelude. Here a list of some mods that I have done.

Resleeve the block with ductile iron sleevs
wiseco 8:5:1 aluminum pistons
eagles connecting rods
skunk 2 valves, springs, and retainers
using turbonetics t3/t4 turbo
etc....

what is the max boost i can run with this setup? how high of a psi have other build honda engine run? please list engine, psi, and how long you been running?

Right now I am running 13psi making 250whp. I have to get a 3 bar map sensor and will do a retune with 20 or more psi depending on what i find out.

[98civcEK]

the amount of boost depends on the size of the turbo. the smaller the turbo the more psi you can set it to. the larger the less boost.

[street_accord94]

Originally Posted by 98civcEK

the amount of boost depends on the size of the turbo. the smaller the turbo the more psi you can set it to. the larger the less boost.

he speaks the truth...you should measure by the horsepower goals

[b16ahybrid]

Assuming your tuning and fuel set-up is up to the task you should be good for about 500whp or the max of that turbo which depends on the a/r.
Like it was said prior, you don't measure the limits in terms of boost pressure but in terms of power being made and quality of the tuning.

[prelude1911]

Well my goal is 400 plus whp. this is my first build. the turbo i read is good for 250-550hp. i am currently using stock cams with no port work. i only put on new skunk valves, springs, and retainers. kind of ran out of time. but i think i got everything on the car to be able to produce that kind of power. just need someone really good to tune it.

[miikail]

you'll be good for tons of boost if you tune it right. You should look into higher compression pistons for some better low end power when you come off the line. I've been running this setup for about 3 years now and haven't had any issues. I have an H22A4 GE sleeved at 9.2:1 CR. You're head will be fine. the bottom end is the most important part in this build. You should run around 720cc injectors and get a good ems like Hondata, AEM, MoTeC or Haltech.

[GotBoost98]

Originally Posted by prelude1911

I have a fully built H22A4 engine in my 1997 Honda Prelude. Here a list of some mods that I have done.

Resleeve the block with ductile iron sleevs
wiseco 8:5:1 aluminum pistons
eagles connecting rods
skunk 2 valves, springs, and retainers
using turbonetics t3/t4 turbo
etc....

what is the max boost i can run with this setup? how high of a psi have other build honda engine run? please list engine, psi, and how long you been running?

Right now I am running 13psi making 250whp. I have to get a 3 bar map sensor and will do a retune with 20 or more psi depending on what i find out.

Did you even prep the trans at all?

Also im not sure why you need a CR of 8 anything A 9:5:1 or a 9:8:1 should be just fine for a street car...................... you went a bit over kill there..........you can still also hit 450whp with out having to run over 18psi you set up the turbo an size of everything correctly

[prelude1911]

well i have 750cc rc fuel injectors feeding from a aem fuel rail and aem fuel pressure regulator. I also added a walbro 250lph in tank fuel pump and have the hondata s200 system installed. i got the wiseco 8:5:1 compression pistons because i plan on running high boost and the only available gas here in sothern california is 91 octane. didn't want any problems with detonation. the first guy i had tune the car was kind of a rookie. next time i will have the shop owner do the tunning. here there webpage

http://home.earthlink.net/~spchurch/...motivetesting/

[prelude1911]

Originally Posted by GotBoost98

Did you even prep the trans at all?

Also im not sure why you need a CR of 8 anything A 9:5:1 or a 9:8:1 should be just fine for a street car...................... you went a bit over kill there..........you can still also hit 450whp with out having to run over 18psi you set up the turbo an size of everything correctly

I have a fidanza 8lb. aluminum flywheel, a 6 puck clutch with a stock pressure plate.

[GotBoost98]

upgrade that pressure plate.....an you should be okay......id personally get a lsd with a drag spool as well

[miikail]

Originally Posted by prelude1911

I have a fidanza 8lb. aluminum flywheel, a 6 puck clutch with a stock pressure plate.

what clutch. i had a 6 puck and had issues with it holding up top beyond 3rd gear. look into RPS or Spec.

[b16ahybrid]

Originally Posted by GotBoost98

upgrade that pressure plate.....an you should be okay......id personally get a lsd with a drag spool as well

You can only run one or the other. An lsd is a limited slip diff, and a drag spool is like a welded differential only lighter and more expensive (same function, locks both wheels).. thats like running a header and a turbo manifold.

[98vtec]

13psi and only 250whp?

[GotBoost98]

Originally Posted by b16ahybrid

You can only run one or the other. An lsd is a limited slip diff, and a drag spool is like a welded differential only lighter and more expensive (same function, locks both wheels).. thats like running a header and a turbo manifold.

I wouldn't know ive only used Lsd...An I know what Lsd stands for You think im stupid?....never had experience with drag spools.. so its not like I would know if you could run both.......Ive never even seen one honestly..I guess it looks the same as a Lsd..Didnt know that it couldnt be used........Thanks for info.........*~Edited~* Just looked at a drag spool looks very close to a Lsd.........

[b16ahybrid]

Originally Posted by GotBoost98

I wouldn't know ive only used Lsd.......never had experience with drag spools..

NP, just letting you now. Also so this guy doesn't go looking for an lsd with a drag spool....