i have a h22 prelude that i am going to turbo and i was wondering what all i needed to run 12 psi? do i need a different head gasket, rings? i know i need a lot of fuel upgrades

 

https://honda-tech.com/zerosearch

and

https://honda-tech.com/zeroforum?id=16

 

you need alot search....the stock head gasket will work fine...yes upgrade your fuel system...pump, and injectors for starters...

 

I do not condone running 12psi daily on a stock engine, but it's not mine so knock yourself out.


https://honda-tech.com/zerothread?id=776298
https://honda-tech.com/zerothread?id=749784

You also need to understand that more boost does not necessarily equal more power. Basically you need to find a power range you want to be in, then you can adequately determine the size trims you need on your turbo.

 

I second that. If you run 12 psi it will be only for a short time. then you have to rebuilt your motor. Yo will need to sleeve your block and used forged piston with rings. Start searching there are lots of topics about the frm lining in stock h22's.

 

try runnin like 6 psi, until you build it up a bit, sleeves, pistons rods, cam gears maybe valve sprigs and retainers, an dthen boost it at 12 psi
or just take the engine out and build it up and put the turbo on all at once,
I would highly recomend against runnin 12 psi on the stock enigne, unless you like blowin up engines

 

stock h22 will max at about 400hp before spewing its guts everywhere. if tuned properly 350-375hp shouldnt be a problem..... but thats with perfect tuning. engines dont care about boost.. they care about hp.

 

hey matt, this is tuan. im on a slow *** vietnam computer. everything here is really different. for some reason i cant message anyone. i tried to find a way of calling over there, but the international phone cards here are really expensive. if you can, think you could buy one and ill pay you back later?

man i really miss home.. around here we cruise around the town on mopeds and pick up chicks on mopeds, haha. hope your having fun over there without me... it's really different here. girls wear things over their face so they dont get tan.. total opposite of over there, heh.

anyways im out, ill try to get on here as much as possible, but i gotta pay per hour so yea... lates. when i was in taiwan there was some tdm cars, haha. the civics had rubber moldings all around. heh. tell me wats the update with jesse, and my springs. The nightlife is very different here, all we do is cruise on mopeds and drink coffee, well yea... see ya

(mods, please dont delete my post, i wasnt able to message him for some reason(jdmh22lude), so this was the only way i could get in contact, also it would be nice if you could message him and tell him that i posted, thanks in advance.)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDogg &raquo;</TD></TR><TR><TD CLASS="quote">stock h22 will max at about 400hp before spewing its guts everywhere. if tuned properly 350-375hp shouldnt be a problem..... but thats with perfect tuning. engines dont care about boost.. they care about hp.</TD></TR></TABLE>
Sure, but for how long? And there is no such thing as a perfect tune.

Don't think in terms of psi, think of it in terms of power output, since the turbo specs, the complimentary parts, the engine management, and the tune, all factor in. I think 300 whp is pushing the limit on the stock H22a1 or a4. If the ring lands don't give, a rod will.

 

well what would be different from running 9psi SC'd and 9psi on a similar volume Turbo? other then a cooler intake charge?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeLooker &raquo;</TD></TR><TR><TD CLASS="quote">well what would be different from running 9psi SC'd and 9psi on a similar volume Turbo? other then a cooler intake charge?</TD></TR></TABLE>
Well, there would be a large difference. 9 psi is out of the efficiency range of the M62 blower, driving the intake temps above 200 degrees. Now think of an intercooled, properly chosen turbo.

But then, the JRSC isn't meant for peak power, it's meant for the boat loads of low end torque it produces. But this thread doesn't need to turn into a supercharger vs turbo thread.

 

Well I was runnen 3 psi on my bone stock jdm h22a for about 5 months. Reason being I had no boost controller and that was the pound spring in the wastegate. Everything seemed fine Except I would blow different color smoke everynow and then so I new something was going bad. When I went to install my new built block, The cylinder walls were all scraped up there were like hundreds of tiny cracks everywhere. So even at 3 psi be careful. I would not recomend 12 psi on a stock block even though I heard it has been done. Sleev you block at lease. Good luck.

 

did you have it tuned at all with 3 psi? It's obvious you overheated, causing your pistons to expand to much...

 

so 7-8 psi on a bolt on kit is safe? im interested in bo0sting with my hondata. With this tuning method, 7 psi should be save on a stock motor right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GaRn &raquo;</TD></TR><TR><TD CLASS="quote">did you have it tuned at all with 3 psi? It's obvious you overheated, causing your pistons to expand to much...</TD></TR></TABLE>
My car was tuned at 3 psi on a dyno. My car never overheated on me. It always stayed at close to normal temps. But maybe they did expand, I don't know.

 

[QUOTE=PrecisionH23a]I do not condone running 12psi daily on a stock engine, but it's not mine so knock yourself out.

QUOTE]

... and make sure you get it all on film and post it, so that the rest of us can enjoy it too!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h22Hatchy &raquo;</TD></TR><TR><TD CLASS="quote">
My car was tuned at 3 psi on a dyno. </TD></TR></TABLE>

Where the hell did you find a wastegate w/ a 3# spring?

And I think there's no real clear-cut answer. There was the H22 hatch w/ 14#'s making 4xx horsepower.....and there's people who blow their motors on 6#'s.

 

very tru... but i believe 6-7 psi is ok.
what does the Drag and F-max kit come stock? i think its 7psi!

which kit would you get?

drag?
rev-hard?
greddy w/fmic?
f-max?

 

6 psi


i'm getting ready to boost my stock h22 in the next month(once paychecks become normal again), and i've been reading and researching for about 5 months now on boosting my engine...like others have mentioned, know first what hp you want to make, then that will let you know which turbo you should be looking at and if any internal work is required. from what i have found 6psi is safer, 8psi on stock motor is the extreme safe(really pushing it though). of course people know people who've done more or less, but from what i've seen, read, and been advised...go 6psi on a stock daily driver. get all the junk to make it run right and get it tuned right away.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by danmanh22 &raquo;</TD></TR><TR><TD CLASS="quote">[QUOTE=PrecisionH23a]I do not condone running 12psi daily on a stock engine, but it's not mine so knock yourself out.

QUOTE]

... and make sure you get it all on film and post it, so that the rest of us can enjoy it too!</TD></TR></TABLE>

 

they're all good kits with their advantages and disadvantages.

 

With all of the prelude's that I have done on a stock bottom end I only tune them to 7-8psi. If anyone needs any help with kit installation or tuning send me a PM.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeyKrus &raquo;</TD></TR><TR><TD CLASS="quote">Where the hell did you find a wastegate w/ a 3# spring? </TD></TR></TABLE>
Its a Tial wastegate.