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Starting my H23vtec build.

 
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Old 09-15-2010, 08:51 PM
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Icon14 Starting my H23vtec build.

Goals: OK so i want to build a car that is drivable but fun looks and performs well. Ill be able to maintain it as my daily driver. There is nothing wrong the the motor in it so im not in a rush.

Angle of attack.
As stated i have a perfectly fine F22 in the car now. I'm going to take my time and search the hell out of this sommore. Im going to go ahead and find an engine stand and build the motor piece by piece then make dropping it in a 1-2 day affair.

Parts list
H22 head and head part (cams, gears, wires, ex)
H23 block
Ill need to replace anything that touches
the timing belt over to the vtec motor
H22 water pump and pipes
H22 timing belt
H22 Power steering bracket. the H23 bracket will
work but modding is needed, no big deal
I'm going to use a p72 or a p28 (as recommended by street_ride14)
witch ever on i can get my grubby little hands on first.
And currently have a Forged F22 crank and rods from
Ivan's G22 that split on him. IM not sure of the
maker but they are goning to be replacing what was in the 23
I also have a 12lb fly as well (ACT)
As of now im not sure of wat pistons in going to use im really just
focused on building the motor. And if it fails
ill have a back up

My reasons:
Well at first i was going to boost my F22 then i decided to do a G22 because Ivan had one. The i was going to just build the F22 that was in the car and a few times i thought about H22 swap. I had already bout Ivan's G motor from him for 500 so i was sorta committed to the F series of engine. Then i found out that i guy i use to do work with has a H23 with a bad crank in it. I had a H22 head and spare parts crank and rods, so i did some searching and found out that this is a somewhat more reliable build than the G. So after reading searching and the fact i practically already have almost all the parts now and all i needed was the block i went ahead and decided to do the H23vtec. so wish me luck guy

Resources:
GOOGLE im J/K but
how to: H23VTEC, H23 VTEC, H23/VTEC (search friendly) - Honda-Tech
The official H/F piston/rod/crank/block specs and CR thread - Honda-Tech
http://www.thejdm.com/viewtopic.php?...be89521756d06b
http://www.honda-tech.com/showthread...23+vtec+hybrid
Where my biggest sources of information thus far.

Last edited by naj3000; 11-26-2010 at 11:38 PM. Reason: the best compression calculator ive ever seen
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Old 09-16-2010, 06:13 PM
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Re: Starting my H23vtec build.

And i big reason i posted this thread is to help anyone out that may be looking for information on the build weather what parts to use or not to use and also to get some feedback as well, tips ideas and so on.
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Old 10-03-2010, 01:11 AM
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Re: Starting my H23vtec build.

any updates on this im interezted in this im lookin into makin my own h23vtec
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Old 10-03-2010, 02:38 AM
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Re: Starting my H23vtec build.

what crank would you use to to get a 8 grand redline reliably on that engine while keeping the 2.3 displacement
i cant remember what gives the h23 the 0.01 extra liters(its late) but the build im planning calles for highest redline @ 8000 lowest 7800 and high compression but keeping the h23 @ 2.3 liters.
sorry if this is confusing
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Old 10-03-2010, 02:41 AM
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Re: Starting my H23vtec build.

and since it seems as your not resleeving the block but building the engine get some h22a1 pistons to bump your compression some and get mo powa!!!!!!
just my .02
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Old 10-03-2010, 09:30 AM
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Re: Starting my H23vtec build.

Quote:
Originally Posted by ranger11x View Post
what crank would you use to to get a 8 grand redline reliably on that engine while keeping the 2.3 displacement
i cant remember what gives the h23 the 0.01 extra liters(its late) but the build im planning calles for highest redline @ 8000 lowest 7800 and high compression but keeping the h23 @ 2.3 liters.
sorry if this is confusing
if you want to save money and some hassle buy a blue top h23 vtec . if you look around you can get one for around $900 . i have one in my car and its a great out of the box motor . by the way it redlines at 8k from the factory ( to reach this goal honda balanced the entire rotating ass from the factory ) .. its a great all around motor . most pep with minor bolt ons and a decent tune are getting around 186 whp out of them .. not to bad .. with a few more parts ( ie cams intake manifold and better springs and retainers ) you would easily get well over 200 whp reliably with no issue ..

JDM Engine Depot ask for will tell him corey told you to call . hes a great guy to deal with and these guys will take care of you .. only once in over 30 motors have i ever had any problem and they took care of it instantly no questions asked ..
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Old 10-03-2010, 02:55 PM
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Re: Starting my H23vtec build.

ill have to think about it when i get another lude this H23 is going all motor no vtec for power
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Old 10-03-2010, 03:13 PM
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Re: Starting my H23vtec build.

OK OK OK sorry i havent gotten any notifications on this thread. But anyways i will use the H23/F22 crank and H23/F22 rods, they are the same part number. And it is the longer stroke and shorter rods that gives it the extra L. (if im wrong somone come check me). The block for the H22 and 23 are the same BTW the 22 just has oil jets to protect the pistons from high revs, i do believe they are just bolt ins. I will be running some H22a pistons i think. But im not sure yet if ill have and valve clearance problems. And the way to rev up to 8k is explained here (Welcome to www.Hondaplex.com Houston, Texas U.S.A.) ive been searching for WEEKS for this thread. And the reason im not going to buy a V23 is beacuse i allready have most of the parts and i lucked up and found a complete H23 for 150$ it just had a bad crank so i couldnt really pass on it

Last edited by naj3000; 10-03-2010 at 03:27 PM.
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Old 10-03-2010, 09:34 PM
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Re: Starting my H23vtec build.

Random question; isn't the h23 vtec already done? On jdm sites that have it listed, a blue top, for bout` 900 dollars.

I'm sure it isn't the same as the hybrid, can someone point out why just for my sake of knowledge. Thanks. ;p
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Old 10-03-2010, 11:33 PM
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Re: Starting my H23vtec build.

Quote:
Originally Posted by Terror View Post
Random question; isn't the h23 vtec already done? On jdm sites that have it listed, a blue top, for bout` 900 dollars.

I'm sure it isn't the same as the hybrid, can someone point out why just for my sake of knowledge. Thanks. ;p
Well ya it is a vtec a motor. H23a. came in an accord wagon made in Japan for a few years. It has great acceleration great low end toque but has a red line of about 6400 i do believe . But it is possible to get pass that limitation with some modifications, tunning, and a good crank.
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Old 10-25-2010, 08:40 PM
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Re: Starting my H23vtec build.

Bump if anyone has any info they would like to add for this sites ref.
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Old 10-26-2010, 01:01 AM
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Re: Starting my H23vtec build.

the H23A VTEC is factory modified with internal oil passage in the H23A block to operate the vtec solenoid in the H22A head. The power is on par with a typical H22A engine but with a lower redline because it has a longer stroke than H22A. H23A DOHC VTEC has 87mm x 95mm (bore and stroke)and the H22A DOHC VTEC has 87mm x 90.7mm (bore and stroke). The H23A DOHC VTEC Engine is largest displacement in the H Series engines. 10.6:1 compression ratio.
direct from wikipedia....so it must be true lol
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Old 10-26-2010, 10:52 PM
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Re: Starting my H23vtec build.

hahah well i didnt mean tha wiki could have explained such lol. I meant any personal expierences. If anyone else has start or done one lls
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Old 10-26-2010, 11:20 PM
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Re: Starting my H23vtec build.

i have about 27k on my h22head/h23bottom end pulls strong. running a chipped p72
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Old 10-27-2010, 12:39 AM
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Re: Starting my H23vtec build.

...............

Last edited by 98vtec; 06-05-2013 at 12:54 PM.
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Old 10-27-2010, 12:58 PM
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Re: Starting my H23vtec build.

ok awsome stuff like that lls. "dontmocme" are you boosted?
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Old 10-27-2010, 02:28 PM
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Re: Starting my H23vtec build.

whats the compression after the h23v build anyway??
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Old 10-27-2010, 03:10 PM
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Re: Starting my H23vtec build.

I noticed two things I wanna input.

1. I've read that a lightweight flywheel is great for N/A cars and street cars. I've heard it kinda sucks when you run boost. Dunno why, thats just what I read. And if you're not going boost, then disregard what I said.

2. Never buy anything from JDM Engine Depot.
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Old 10-27-2010, 05:26 PM
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Re: Starting my H23vtec build.

Quote:
Originally Posted by ranger11x View Post
whats the compression after the h23v build anyway??
thats a good question that has had sevral different answers. It really depens on the pistons being ran. Ive seen people running H23 pistons pulling 9.1, people running 10.1 with H22 pistons. With the type S pistons i want to run Ive calcuated about 11.1. But i can indeed be super wrong on that. So please let me do a little more work and ill be able to tell you a better answer. And if anyone dissagress please fell free to chime in.
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Old 10-27-2010, 05:27 PM
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Re: Starting my H23vtec build.

Quote:
Originally Posted by havikprelude View Post
I noticed two things I wanna input.

1. I've read that a lightweight flywheel is great for N/A cars and street cars. I've heard it kinda sucks when you run boost. Dunno why, thats just what I read. And if you're not going boost, then disregard what I said.

2. Never buy anything from JDM Engine Depot.
I my self to have heard that lightweight flys are better for N/A as well. and i dont know why either lls.

and why shouldnt anyone buy anything JDM Engine Depot?
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Old 10-27-2010, 10:17 PM
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Re: Starting my H23vtec build.

Quote:
Originally Posted by naj3000 View Post
thats a good question that has had sevral different answers. It really depens on the pistons being ran. Ive seen people running H23 pistons pulling 9.1, people running 10.1 with H22 pistons. With the type S pistons i want to run Ive calcuated about 11.1. But i can indeed be super wrong on that. So please let me do a little more work and ill be able to tell you a better answer. And if anyone dissagress please fell free to chime in.
you are very wrong. 10.1 is factory USDM h22a4 compression. 11:1 is factory typeS/EuroR h22.

when you add the extra length of the h23 stroke and the slightest bit shorter h23 rods you up about 1point in compression when you use h22 pistons. So h22a4 pistons move to 11:1, type S pistons move to 12:1. Use h22 rods and the compression is even higher.
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Old 10-27-2010, 10:26 PM
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Re: Starting my H23vtec build.

Quote:
Originally Posted by 98vtec View Post
you are very wrong. 10.1 is factory USDM h22a4 compression. 11:1 is factory typeS/EuroR h22.

when you add the extra length of the h23 stroke and the slightest bit shorter h23 rods you up about 1point in compression when you use h22 pistons. So h22a4 pistons move to 11:1, type S pistons move to 12:1. Use h22 rods and the compression is even higher.
all of you should read this, write it on a piece of paper and eat it, then read the post again. and hopefully you'll remember it.

way to condense a shiiiiiiiiit ton of information into three sentences blake lol
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Old 10-28-2010, 12:56 AM
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Re: Starting my H23vtec build.

Quote:
Originally Posted by 98vtec View Post
you are very wrong. 10.1 is factory USDM h22a4 compression. 11:1 is factory typeS/EuroR h22.

when you add the extra length of the h23 stroke and the slightest bit shorter h23 rods you up about 1point in compression when you use h22 pistons. So h22a4 pistons move to 11:1, type S pistons move to 12:1. Use h22 rods and the compression is even higher.
about what ive heard from other sources. just want lots of input and info on this build because ive got a h23a1 bottom end sitting in a friends garage just BEGGING for this build to be done to it.
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Old 10-28-2010, 08:19 AM
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Re: Starting my H23vtec build.

JDM Engine Depot is notoriously so-so. Look up the reviews, half the people say yeah they're fine and the other half say they exploded. I dunno if you want to take the risk. I'd go with either HMO or at the very least, JDM Engine Zone. Notice I said Zone, not Depot.



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Old 10-28-2010, 01:53 PM
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Re: Starting my H23vtec build.

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Originally Posted by ogsmakdade View Post
all of you should read this, write it on a piece of paper and eat it, then read the post again. and hopefully you'll remember it.

way to condense a shiiiiiiiiit ton of information into three sentences blake lol
I didnt know you could run the H22 rods with the H23 crank. So are there no clearance issues with that combo? I want to build a 2.3 bottom end and my buddy who has done quite a few of them says to run the H23 rods. Someone who actually knows,please respond(ogsmakdade,98 VTEC)thanks
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Old 10-28-2010, 07:14 PM
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Re: Starting my H23vtec build.

Quote:
Originally Posted by 98vtec View Post
you are very wrong. 10.1 is factory USDM h22a4 compression. 11:1 is factory typeS/EuroR h22.

when you add the extra length of the h23 stroke and the slightest bit shorter h23 rods you up about 1point in compression when you use h22 pistons. So h22a4 pistons move to 11:1, type S pistons move to 12:1. Use h22 rods and the compression is even higher.
bam thank you sir. And its info like this is why i made this thread. I appreciate the extra info.
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Old 10-28-2010, 08:17 PM
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Re: Starting my H23vtec build.

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Originally Posted by apex1972 View Post
I didnt know you could run the H22 rods with the H23 crank. So are there no clearance issues with that combo? I want to build a 2.3 bottom end and my buddy who has done quite a few of them says to run the H23 rods. Someone who actually knows,please respond(ogsmakdade,98 VTEC)thanks
im using aluminum h22 rods, h23 crank and custom pistons for my motor.
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Old 10-29-2010, 11:47 AM
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Re: Starting my H23vtec build.

whats your final compression ratio if you dont mind telling.
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Old 10-29-2010, 11:59 AM
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Re: Starting my H23vtec build.

...........................

Last edited by 98vtec; 06-05-2013 at 12:53 PM.
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Old 01-20-2011, 01:25 PM
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Re: Starting my H23vtec build.

update if you will: Ok i recently ran into a brick wall. The block i had had a spun bearing and it destroyed the housing it was resting in so the block is no good. Ive been looking for months but there seems to be no salvagable H23A1/H22A1 blocks in my area that i can use for this build. so as of now im sitting with an H22a4 head, h23 crank and rods but no block =( sigh....
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