H23 Vtec
03-25-2004, 04:39 PM
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H23 Vtec
ive heard of the b16 head on the b20 block when i wanted a crx...... with my H23 can i vtec that ?? will it be faster then the 22 vtec ?? or will i be wasting my time trying to do it???
03-25-2004, 05:04 PM
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Hades: 2.2L DOHC VTEC
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U can put an H22 (VTEC) head on an H23 block. That'll do whut u want, it's called a "Frankenstein" motor. You'll need to do more than just that of course, but this is what you're talking about. With this, you'll also run about 20 hp more than an H22, so u'd be around 220 hp or so.
03-25-2004, 05:34 PM
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how much?
Originally Posted by 5hift
U can put an H22 (VTEC) head on an H23 block. That'll do whut u want, it's called a "Frankenstein" motor. You'll need to do more than just that of course, but this is what you're talking about. With this, you'll also run about 20 hp more than an H22, so u'd be around 220 hp or so.
Hmm I am very interested. I got a SI instead of VTEC because I couldn't find one at a reasonable price. So this is kind of interesting.
About how much would this process cost? Do I have to replace any of the rods or anything major? Thanks for the info!
03-25-2004, 07:03 PM
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i doubt the h23a1 with a h22a head is going to make 220 HP at the crank.
it ends up being about even with the h22a motor power wise. and the reason for that is obviously the wonderful h22 head.
honda sold this engine in the accord wagon in like 99-00 (i think?)
jdm only of course...went by the engine code h23a
it came with the blue valve cover stock.
the main reason i would not do this hybrid is because the h23a1 doesnt rev nearly as high as the h22a stock for stock...given...the h22a head changes that...but having blown the #2 CR bearing on my h23a1, and knowing of several other h23a1's that met the same fate...i would either buy a h22a longblock for dirt cheap and use your h23a1 tranny or buy the h23a outright, instead of putting a h22a head on your h23a1.
~boom
it ends up being about even with the h22a motor power wise. and the reason for that is obviously the wonderful h22 head.
honda sold this engine in the accord wagon in like 99-00 (i think?)
jdm only of course...went by the engine code h23a
it came with the blue valve cover stock.
the main reason i would not do this hybrid is because the h23a1 doesnt rev nearly as high as the h22a stock for stock...given...the h22a head changes that...but having blown the #2 CR bearing on my h23a1, and knowing of several other h23a1's that met the same fate...i would either buy a h22a longblock for dirt cheap and use your h23a1 tranny or buy the h23a outright, instead of putting a h22a head on your h23a1.
~boom
03-26-2004, 07:40 AM
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Originally Posted by SunsetLude
so how much hp do u think ill get out of this h22 head and h23 block??
Originally Posted by ludeboom
i doubt the h23a1 with a h22a head is going to make 220 HP at the crank.
it ends up being about even with the h22a motor power wise. and the reason for that is obviously the wonderful h22 head.
it ends up being about even with the h22a motor power wise. and the reason for that is obviously the wonderful h22 head.
~boom
03-26-2004, 07:41 AM
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There's no way I'm arguing with Boom. From what I read and heard from people who have done it, it's ~20hp more than the H22, so i might be 210-220, but if Boom says it's not, I'd listen to him.
03-26-2004, 08:08 AM
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Originally Posted by ludeboom
i doubt the h23a1 with a h22a head is going to make 220 HP at the crank.
it ends up being about even with the h22a motor power wise. and the reason for that is obviously the wonderful h22 head.
honda sold this engine in the accord wagon in like 99-00 (i think?)
jdm only of course...went by the engine code h23a
it came with the blue valve cover stock.
the main reason i would not do this hybrid is because the h23a1 doesnt rev nearly as high as the h22a stock for stock...given...the h22a head changes that...but having blown the #2 CR bearing on my h23a1, and knowing of several other h23a1's that met the same fate...i would either buy a h22a longblock for dirt cheap and use your h23a1 tranny or buy the h23a outright, instead of putting a h22a head on your h23a1.
~boom
it ends up being about even with the h22a motor power wise. and the reason for that is obviously the wonderful h22 head.
honda sold this engine in the accord wagon in like 99-00 (i think?)
jdm only of course...went by the engine code h23a
it came with the blue valve cover stock.
the main reason i would not do this hybrid is because the h23a1 doesnt rev nearly as high as the h22a stock for stock...given...the h22a head changes that...but having blown the #2 CR bearing on my h23a1, and knowing of several other h23a1's that met the same fate...i would either buy a h22a longblock for dirt cheap and use your h23a1 tranny or buy the h23a outright, instead of putting a h22a head on your h23a1.
~boom
Doing this hybrid is A LOT more complicated than what it seems. It requires more than just the H22 head. You really need a whole H22 long block to have all the necessary parts. If you are starting out with an H23 longblock....you will need a lot more parts.
This is not a project for someone who does not know what they are doing. Too many people have suffered blown motors because they don't know the details about this process.
Also, after the motor is built...revving the motor past 7200 rpms is just asking for trouble because the H23 bottomend is not as well balanced as the H22 bottomend (mainly the crank and oil squirters)
Stick with the H22 and just mod that. Your car will be a lot more reliable, if that is a concern.
If you have the motor built correctly and are mature about it (not revving the shyt out of the motor) it will serve you well. Otherwise, you can expect a blown motor and A LOT of wasted $$ in the near future.
Hope this helps
03-26-2004, 08:11 AM
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going by the numbers:
h23a1 = 9.8/1 CR
h22a = 10.6/1 CR
h23a1 = 2.3 Liter
h22a = 2.2 liter
h23a1, 160 peak HP @ 6000 rpm
h22a, 197 peak HP @ 6800 rpm
both have similiar TQ.
going on this information, the head design and cams will be changed during the hybrid but the compression will stay the same for the most part.
meaning higher redline, more cam breathing and an overall increase in performance...EXCEPT for the lower compression ratio.
so i dont see how merely adding a h22a head to a weaker motor is going to make more HP...it may make more TQ since it has .1 more liter and that is the main contributing factor for TQ on an NA inline 4.
~boom
h23a1 = 9.8/1 CR
h22a = 10.6/1 CR
h23a1 = 2.3 Liter
h22a = 2.2 liter
h23a1, 160 peak HP @ 6000 rpm
h22a, 197 peak HP @ 6800 rpm
both have similiar TQ.
going on this information, the head design and cams will be changed during the hybrid but the compression will stay the same for the most part.
meaning higher redline, more cam breathing and an overall increase in performance...EXCEPT for the lower compression ratio.
so i dont see how merely adding a h22a head to a weaker motor is going to make more HP...it may make more TQ since it has .1 more liter and that is the main contributing factor for TQ on an NA inline 4.
~boom