ok im gettin the h22 in a couple mounths and im builin up the internals, boostin it then juicin it.......im thinkin of runin a 100 shot maby a little more of nos....ive learned that with anything with a 100 shot or more ur gona wana inprove ur fuel system....but thats wats concerning me...i wana keep the compression low for the turbo but build up the fuel system for the nos but if u did so wouldnt it raise compression?

 

The H22a1 in USDM trim comes with a 9.5:1 compression ratio as opposed to the JDM version which boasts 10.5:1. Both the USDM AND the JDM compression ratios' are certainly on the high side for a turbo application.
Considering you're looking to not only boost the H22, but also give it an NOX 100 shot also, I would HIGHLY recommend no less that internal upgrades including Triple forged Pistons, Forged Billet Connecting Rods, Cleavite Rod and Main Bearings and a set of new (noy reused) Head bolts. The pistons should be a dish type with a combustion chamber volume which computes out to 8.5: to 9:1 compression ratio.
There's a magazine article in this months' issue in HondaTuning involving an H22a1 Turbo build-up. You should read it, and keep asking questions before you commit on building this bomb.

P

The fuel system has no bearing on the compression ratio, If I understand your question.

 

yea im aware of the trouble an h22 turbo builds going to bring..but im also aware of the power it will bring....to top it off its and auto lsd lolol...its gona be realllllllllll funn (sarcastic) .......................so fuel pumps and injectors and wat not wont raise compression?

 

what does the fuel system have to do with compresson?

no it has nothing to do with compression. i sugggest you do a lot more research before you touch the car.

 

You picked up on it as well, huh? The fuel pressure question really set me back for a moment. I don't want to discourage him in his quest for the "perfect "Mega-motor"", that's why I included "There's a magazine article in this months' issue in HondaTuning involving an H22a1 Turbo build-up. You should read it, and keep asking questions before you commit on building this bomb." when I finished my dissertation.
I learned years ago, (at great expense at the time) that more is not necessarily better. It's the balanced, well thought out builds that work.

P

 

yea i plan on doin a lot more research thats wat this post was....but i have been researchin for long time now.......yea my knowledge is scetchy when it comes to compression, but keep in mind im not buildin this motor tomaro...im swain in h22 but im not gona go at it as soon as its in....its just a goal....and no im not just tryin to thow into it everything i see sayin (hmm this will make it faster) but yes i plan on getting more than the normal 250hp....i plan on racin it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P_Adams &raquo;</TD></TR><TR><TD CLASS="quote">The H22a1 in USDM trim comes with a 9.5:1 compression ratio as opposed to the JDM version which boasts 10.5:1. Both the USDM AND the JDM compression ratios' are certainly on the high side for a turbo application...
</TD></TR></TABLE>

Doesnt the USDM H22 have 10.6 comprssion? 190hp and a milder cam?

So, low compression build that can muster up 250whp on Juice...OK here is my go at it.

Crower Turbo Cams (still give some hp in N/A form)
A 5 angle intake/3 angle Exhaust port job
Darton sleeves on the block (because we are boosting here)
Bored Block to 89mm
89 mm 9:1 CR pistons (nitrided)
H Beams
Stock Crank (cryo not a bad idea)
75 shot of nitrous

Should get you real close to that 250whp goal easy...its gonna cost you tho.


As for fuel concerns...A Walbro 255lph can keep that engine fed with gas...Some larger injectors may be needed as well as the appropiate tune. Or just a FPR.


Modified by AcclipseH23 at 5:11 AM 10/15/2005

 

Nope. I stand by my original post 10.5:1 JDM, 9.5:1 USDM. Refer supplied link:

http://www.osakajdmmotors.com/introhonda.htm

P

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P_Adams &raquo;</TD></TR><TR><TD CLASS="quote">Nope. I stand by my original post 10.5:1 JDM, 9.5:1 USDM. Refer supplied link:

http://www.osakajdmmotors.com/introhonda.htm

P

</TD></TR></TABLE>

I dont see in that link where it says JDM is 10.5:1 and USDM is 9.5:1. And thats Osaka so you know thats inaccurate.

JDM types S H22= 11.0:1 compression ratio
JDM H22= 10.6:1 CR
USDM H22=10.0:1 CR (Googled it, no one has the numbers you are claiming)

You may be talking about some kind of headswapped hybrids, but not a pure H22...

 

92-95 Prelude H22A Engine
Swap: $2250.00
• 2200cc (2.2L) DOHC Vtec Engine
• 200hp / 161trq / 10.6:1 cr.
• Hydraulic tranny type
• Inquire within for LSD equipped trans. (not all trans are LSD equipped).
• Inquire within if you desire the U.S. version of the this engine

Direct (verbadum) from this site:
http://www.jaydm.com/jdm.htm
or this one:

SPECIFICATIONS

» Jdm engine : H22A
» Year : 92-96
» Valve train : DOHC, VTEC, 16 Valve
» Jdm transmission : Hydraulic
» Displacement : 2.2L
» Horsepower : 200 HP
» Torque : 161lbs-ft@5500rpm
» Compression : 10.6:1
» Price : 1990.00$ (USD)

From this site:
http://www.naganojapanese.com/jdm_h22a.htm


Thats three (3), do I have to go on ???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P_Adams &raquo;</TD></TR><TR><TD CLASS="quote">Nope. I stand by my original post 10.5:1 JDM, 9.5:1 USDM. Refer supplied link:

http://www.osakajdmmotors.com/introhonda.htm

P

</TD></TR></TABLE>
Well, I guess the Helms manual must be wrong then. As well as every person who has done any real work on H22 builds.

10:1 usdm CR
10.6:1 jdm CR

Double Check your sources before you post.... I have yet to see any primedia publications that are 100% accurate on technical information.

Triple forged??? The main concern that you have all missed with the build is that he must have his block sleeved.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by P_Adams &raquo;</TD></TR><TR><TD CLASS="quote">The H22a1 in USDM trim comes with a 9.5:1 compression ratio as opposed to the JDM version which boasts 10.5:1. Both the USDM AND the JDM compression ratios' are certainly on the high side for a turbo application.
Considering you're looking to not only boost the H22, but also give it an NOX 100 shot also, I would HIGHLY recommend no less that internal upgrades including Triple forged Pistons, Forged Billet Connecting Rods, Cleavite Rod and Main Bearings and a set of new (noy reused) Head bolts. The pistons should be a dish type with a combustion chamber volume which computes out to 8.5: to 9:1 compression ratio.
There's a magazine article in this months' issue in HondaTuning involving an H22a1 Turbo build-up. You should read it, and keep asking questions before you commit on building this bomb.

P

The fuel system has no bearing on the compression ratio, If I understand your question.</TD></TR></TABLE>

From his original question about fuel and CR, I also doubt that the original poster of this thread has the understanding or capability to do any of this work mechanically. Considering that he is 16 and driving an accord, I doubt that he has the financial backup to follow through with the swap/boost/spray plan any time soon.

Another wishful thinking thread.

 

I stand corrected on the USDM H22A spec. Chilton's calls it out at 10:0.

Ultimately the original premise of my original post still holds true. Neither 10:1, 10.5:1 or 11:1 are conducive to a turbo applications, and would require piston considerations to get it into the more traditional range to avoid excessive cylinder chamber pressures and temps.

Even at traditional boost compression ratios, I'd recommend head studs rather than bolts, and water injection if warranted.

P