i sol my mk3 supra to get my h22 boosted its a 93 JDM block with a type s head. im looking to use a garrett gt30r and tial 38mm gate with a large greddy front mount that i have laying around.
my question is does anyone have exerience with the h22a and this turbo. if so what are some numbers at 8 lbs to 10 lbs im shootign for a very conservative 350hp on low boost and a safe tune. i think that is reasonable right. also ill be tuning on chrome and will have 550 injectors by rc. any inut let me know what you think or know.

also i am currently running a b 16 tranny on this via a bisimoto evo kit and a comp stage 3 clutch. and some other little stuff but ill be upgradign to a wave tech lsd at the time i boost it. and tockico illuminas and eibach springs. just to let you know other things

 

common everybody thoughts questions anything.............

 

to me its not worth boosting an h22 unless its sleeved

 

you can run "low" boost on the h22's stock, by low I am thinking 6-10PSI on like a GT35 so with a GT30 you might be able to run a bit more PSI (to make up for the fact it is slightly smaller) although I think your power goal is very close to the edge of where the H22's start having ringland failures even with a good tune. I would say keep it to 325 or less on stock block and you will probably be fine. I'm looking for 400whp with ease and I decided to sleeve just to make sure I don't grenade in a year after I boost.

 

i have a pre 95 block which is closed deck. thats why i chose it. and it has the better style sleeve in it. 325 is fine really do you think that is atainable at 8-10 lbs. on a gt30r

 

you gutta sleeve it if ur planning to run more then 7lb

 

i run 9 daily and it perfectly fine if get a good tune jeff evans tuned mine on 9 fine infact we had a lot of creep on 2 pulls at 15psi(warped manifold flange) and she took it liek a champ

 

I boosted my stock h22a(closed deck) on 12psi dail driven, never saw any problems. I pulled it apart to build it and no signs of fatigue, now i have a stock sleeved blosck with mahle gold series pistons and rods boosting 14psi on a gt35r with no problems, it spiked during tuning to 20psi and took it like a champ, going to be dyno tuning soon. To me the gt30 is too small for the h22

 

The 30r will spool stupid fast on the H... The people who isnist that you can only run 6,7,10 PSI on a stock block arer morons who either have no real world experience with the motor, or do not understand what the real issue is with it (why its HYPED not to be able to take boost). THE SLEEVES ARE NOT THE ISSUE. Like ANY honda motor with cast pistons its the ringlands that are ther issue. The FRM sleeves arfe stronger than the iron LINED blocks such as the b and f series'.

Im not going to get too much into it, but every friend of mine that has an H is making at least 550 WHP, and most of us boosted the stock blocks as well... IFF TUNED WELL, which is the real limiting factor in any motor/setup.

We have had a NUMBER of BONE STOCK Hs making 400 WHP and have been for a good minute. The 30 r spoolsw hard and fast... get the 3076 and a big hotside at least .82



That being said... Heres a GT30R on my friend Mitches car That made 480/370 on pump at around 17 PSI and 520/420 at 25falling to23 PSI on race gas

http://www.youtube.com/v/L_1hmdfieOI...cfcfcf&feature

 

We did it before, on a euro R motor though. Boost creep was a pain in the *** dealing with, we original were shooting for 5psi on the dyno but it kept creeping, even after adding two 44mm to the manifold ( mini ram ) it still creeped to 8psi.

Besides that the setup was sick, made around 280hp I believe, it was a awhile back so I can't remember for sure. I'd say with 8-10 psi you will be right around 300hp depending on the dyno that is being used, we were on a dyno dynamics that tend to read a little lower then normal.

 

300whp is the limit generally for a USDM stock H22 block, GT30Rs can do the job, but you don't see the "effectiveness" of the extra money you paid for with the lower boost levels. If you plan to build and sleeve later on, then the use of such a turbo is justified. In the meantime, I don't think it is necessary.

 

I was running a GT30 on a closed deck H22 block and recently changed to a GT35.
At 10 psi I made around 320 whp. The 30 spools up quickly and with all the H22 torque it is a sweet daily driver. As mentioned before, EMS, good tuning and adequate fuel delivery are important. Evans has some expertise in the PA area.

 

350-400 is no problem. Just be conservative on the timing and let thhe motor make power.

 

here's my old car:

http://www.youtube.com/watch?v=2lQ3_A8eQrk

Gt30 .63 a/r
750cc's


made 354hp @10 psi

 

x2

 

Old rooomies car has a jdm h22a in it, with a precision sc6152 .82 ar making 389/275 on 8 psi stock motor, not even head studs. Been running for well over a year that way

 

so the the sleeves are strong enough but the pistons fail on h22? what if you went with mahle golds? then youd have no need to sleeve the block to run forged and you wouldnt have the same problem with the ringlands = a dependiable boosted motor correct?

sorry for bringthing this back from may...

 

my h22 blew the ringlands around 12psi. but that was way back when fmu's were the only thing to aid in fuel delivery. the craziest thing was that we did a leakdown test and all cylinders were within acceptable range. once i bit the bullet and sent the block out to be sleeved i realized all 4 of my pistons were f****d. i would agree its mostly about tuning. but from my expierence the ringlands will not tolerate even one mistake, so for the piece of mind send the block out and have it sleeved.

here is what my piston looked like

 

Critical issue for using Mahle Gold pistons is the cylinder prep work. Typical cross hatch honing is bad news. Find someone who has the right honing components and knows what they are doing or can get the right components and can follow instructions.
The GT30 is great for use with the H22. Loads of torque and good for mid 400s whp in the upper teens (16-19psi) area.

 

A machinist that isd very familliar with porsches would be my choice....... as they are familliar with the process used with FRM sleeves... and teh use of Mahle pistons

 

it was 23 falling to 20psi tubby... i loved my 30R spool was sweet good torque too it made 425 wheel on 12ish psi

 

My old supercharged H22 blew the ring lands.. Almost always on the intake side.

You internet jackasses saying the sleeves cant take it are getting this from where?

I miss my ole Prelude. Whats funny is I have another alusil block. 944 Turbo. Easy power.

 

i have h23a vtec stock can i use 6psi as daily driver ans for 6psi what all things r needed along with turbo & intercooler

 

a buddy of mine before he finally built one, use to run 375 on a stock h22 for years and then ran over 440 for a few months i believe and he only drives it to abuse it, no dailying only racing

 

btw hes running a gt35r