Yo guys,(Yes I've searched but haven;t found my answer)

I'm in the process of putting together my built JDM H22a. I'm going to daily drive with about 15 psi and maybe 22 psi on the weekend at the strip. I've seen alot of topics about blown headgaskets and warped heads or how to torque ARP bolts.

I need to know how much boost a stock H22a JDM head can take for a short period of time, maybe a run or 2 now and then at 22psi. Are there going to problems with the valve springs?? If the valvetrain is capable then i'm going to leave it stock and save some money there.

Thanx

 

what do you mean by "built"? also, tuning is a HUGE factor there.

 

He probably has a sleeved h22 with rods and pistons on a stock head. Pretty much what I'm doing. However, I'm concerned about this as well. BUMP for an answer.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pikachu &raquo;</TD></TR><TR><TD CLASS="quote">He probably has a sleeved h22 with rods and pistons on a stock head. Pretty much what I'm doing. However, I'm concerned about this as well. BUMP for an answer.</TD></TR></TABLE>

I think Steve Oaks was running the stock head and made 580whp, Im not sure if he has upgraded since he's at 780whp though.

 

oh with that setup, and proper tuning you should be able to hit 550 whp at least as long as it wasna daily driver

 

My setup consist of:

Turbocharger: Garrett T3/TO4E
.63 a/r turbine housing with a stg3 wheel
.60 a/r compressor housing with a 57 trim wheel
JE pistons 9.0:1
EAGLE H beam rods
Big *** FMIC
ARP head studs
ARP main studs
Ductile iron sleeves(european ralley brand) 600plus whp garantee
micropolished Balanced the crank
Custom Equal length turbo manifold
Custom modded stock H22a intakemanifold
780cc siemen deka injectors
Still deciding: AEM EMS or P72 with hondata s200
3inch downpipe
3inch custom exhaust
HKS hi power muffler
Tail wastegate
MSD 6al
MSD ss blaster coil
MSD BTM
MSD 2step
Magnecor 8.5 wires
Apexi s-afc

H22a headwork:
Portmatched intake&exhaust
Polished intake
EGR block
Complete cleaning and conditioning of the head

Well that;s about it. Probable forgot some stuff. I need to know if the head can take 15 psi daily driving and 22 psi drag runs??

Here My old H23 turbo setup
http://www.preludeteamholland....=3098

Thnx

 

cheack my boy john d's car. stock head/ fully built block. put down 373Whp & 296Wtq @ 10psi

 

The stock h22 head will flow up to 500whp no problem. The rule of thumb I go by is a ported head will make as much power as an unported one with about 1-2 psi less. As far as valvetrain components go, you'll be fine on stock if you don't rev up past stock redline. The valves will hold 22psi as well. Just make sure the car is tuned properly.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DFW &raquo;</TD></TR><TR><TD CLASS="quote">cheack my boy john d's car. stock head/ fully built block. put down 373Whp & 296Wtq @ 10psi </TD></TR></TABLE>

That lude Rocks man. 375 whp at 10psi is awesome, post some vids of the car if you can.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a &raquo;</TD></TR><TR><TD CLASS="quote">The stock h22 head will flow up to 500whp no problem. The rule of thumb I go by is a ported head will make as much power as an unported one with about 1-2 psi less. As far as valvetrain components go, you'll be fine on stock if you don't rev up past stock redline. The valves will hold 22psi as well. Just make sure the car is tuned properly.</TD></TR></TABLE>

Thnx Precision, those are the words i was looking for. What's up with your car?? Any updates??

 

I have not done anything to it since going to the dyno last month. I'm getting ready to take the motor out and put it in the drag EK in the next 6 weeks or so. I've got so much **** going on with the new company though it's not funny.

Right now I'm going to put a stock h23 in the prelude until I figure out what I'm going to do with the h22 I have here. I kind of want to go all motor and shoot for 200whp and have the car as a daily driver. But then again the prelude is a heavy *** pig and hatch's with swaps will still spank me. Either way, I want a car with a little bit of GO to have as a daily driver. The car looks like absolute **** right now since I sold the body kit and I can't fit a front bumper on due to the intercooler I'm running. Oh well, lol.

Sorry to get OT.

 

yea jons car is pretty sweet, check out this setup. firedrake put down 379whp and i believe 309 tq... on stock internals and 12 lbs of boost... http://www.solid-technology.com, project cars, brians prelude...

 

Yeah i bought my Turbo at Solid-technology haven't heard from him for a long time, probably doing good with the new bussiness.

I wish more people would post there Gen 4 vids up, cause all i keep getting is civic's and integra's

Here is our dutch Vid vault, maybe some vids you guys haven;t seen yet. Mostly on european racetracks.
http://www.preludeteamholland....=2765

I'll update you guys when my car is done and i'll post vids of it when done. I'm shooting for 500whp, but am happy with 400plus as well.

Keep on tuning guys