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h23 vs h22 autocross?

 
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Old 08-21-2010, 12:25 AM
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h23 vs h22 autocross?

What's everyone's experience in these engines in a 4th gen? I understand the h22 has more torque and more hp, but the h23 torque comes on at a lower rpm. Does the h23 tend to do better with the better low end, or is the h22 still superior?
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Old 08-21-2010, 06:18 PM
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Re: h23 vs h22 autocross?

H22 is still superior
Have had plenty of expierence with both.
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Old 08-21-2010, 10:27 PM
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Re: h23 vs h22 autocross?

Depends on the size of the course, and where you can be in your RPM. If you can keep your h22 above 4k, itll sweep the h23 no problems.
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Old 08-21-2010, 11:08 PM
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Re: h23 vs h22 autocross?

Since we're talking autocross. I'd say it depends on the driver. Now a straight away is a different story!
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Old 08-21-2010, 11:10 PM
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Re: h23 vs h22 autocross?

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Originally Posted by HardKnoxBB2 View Post
H22 is still superior
Have had plenty of expierence with both.
Quote:
Originally Posted by shatterbox
Depends on the size of the course, and where you can be in your RPM. If you can keep your h22 above 4k, itll sweep the h23 no problems.
I'll raise your experience and call on the conclusion: 23 years autocrossing Preludes, 15 of them in an H23-powered 4th gen, including a pre-Tour SCCA divisional championship and quite a few regional class championships. Enough borrowed rides and test sessions in a variety of stock and modified 4th and 5th gens to know how they compare.

For most courses and drivers, there's no difference at all. The torque difference is little enough to be irrelevant. The peak comes in about 1000 rpm lower in the H23, offset by the fact the engine runs out of breath by 5500 rpm and hits the limiter at 6200. None of it matters enough to make up for the driver. The only possible exception isn't engine-related: on some courses, there's a definite advantage to an ATTS-equipped 5th gen...but it's very course dependent (needs lots of sweepers, few to no slaloms), and the driver needs to know how to push the ATTS.

The H22 comes into its own up on the top end...flat out in a 4th gen, that's good for about 7 mph difference, if you follow the road test results. That makes it a superior track engine where there's long straights to use it, but for autocross, it's a wash.
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Old 08-21-2010, 11:53 PM
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Re: h23 vs h22 autocross?

You obviously have alot of experience. I simply don't haha. I only got one run in my h23 before it went kaput on me. and it felt like I had alot more torque coming out of corners than I do with the h22. My seat time compared to yours is neglible, in the sense that on a timeline, i would be a hairs thickness compared to you. However my reasoning for my statement, is that I'm still using the tranny from my h23... So it takes a little longer to wind up, and I find myself not going fast enough to be in vtec in second (vtec doesnt kick in for me until roughly 80-85km/h. And our course isn't tight enough for me to just stay in first, but too tight for me to be able to be getting in vtec. I guess it just feels slower when I'm on the smaller cam profile.
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Old 08-22-2010, 12:03 AM
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Re: h23 vs h22 autocross?

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Originally Posted by shatterbox View Post
My seat time compared to yours is neglible...
One of the few benefits to almost being eligible for AARP membership....

Quote:
...I'm still using the tranny from my h23... So it takes a little longer to wind up....
IIRC, the ratios in that gearbox are a little taller than those used in the H22, so you're not getting quite the punch you would otherwise. When you're able to match the right tranny, it'll get better. :)
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Old 08-22-2010, 12:23 AM
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Re: h23 vs h22 autocross?

I know it will :) However, as it stands right now, Im probably selling my lude. Its a constant money pit and not worth the money I'm putting into it. Every time I fix something, another thing breaks. Wanna buy a 4ws h22a4 lude? Lol.

Anyways, to the OP. Use whatever you have, in something like autocross, the differences between these motors isn't a 10th of the different of a good tire and suspension setup would do for you.
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Old 08-22-2010, 10:07 AM
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Re: h23 vs h22 autocross?

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Originally Posted by shatterbox View Post
I know it will :) However, as it stands right now, Im probably selling my lude. Its a constant money pit and not worth the money I'm putting into it. Every time I fix something, another thing breaks. Wanna buy a 4ws h22a4 lude? Lol.
Ha. My wife's forbidden me to get any more cars, and I have a history with my 4th gen -- bought it new, so I'm hanging onto it. Old cars are expensive hobbies, though!
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