H23 all motor
Any suggestions on how to build my H23 all motor i thought heavily about boosting it but now im steering myself the opposite direction. I want to go all motor and build my car for Auto Cross/ Weekend-Drag racing/ Daily driving. And i refuse to switch to H22. Any ideas would help. Thanks- H23 LUDE
Last edited by dakilla4ever; 09-06-2006 at 01:40 PM. Reason: LEFT SOMETHING OUT
i really like this thread.
how about slappin an h22 head on there for VTEC? or do you have to go with an F23 head?
i'd rather go with an H22 head, anyone know who will do it or if it will work?
how about the F23 head?
Yo kilaa. Go boost. If u dont want a h22 head
Dont 4get if u use the h23 block u need to tap the block or buy a oil return kit 4 the VTEC.
But is the 23vtec setup reliable? What kind of numbers will it be pushing? What all would i need to make it daily drivable? And i don't want to go boost because there isn't a supercharger out for it and no one will answer my questions about turbos so i just decided to go N/A.
I was thinking of building a pretty killer H23/vtec awhile back. You can definately make some serious street power out of that set-up. It has a longer stroke than the H22, yet will still be capable of revving to 8500 (built)...maybe more if built properly. I was planning to build one to rev to about 9K max maybe, and hopefully put down 245+whp and 175+ torque. Best bet is to get the H22 head, skunk cams, skunk intake manifold, 68mm throttlebody, 350cc+ injectors, 11.5:1 or 12:1 pistons, and some H-beam rods. Get everything machined and balanced, then get the motor tuned. If you are not willing to spend the money to atleast build the bottom end of the motor, then just go with an H22 and be happy with that.
You are probably looking at any easy $6,000+ build, but it will stomp B-series all day long.
It would also be wise to run an oil cooler on this bigger motor to help keep it a little more reliable. Cooler oil is always a good thing.
I have most of the parts to an H2B swap if you are looking for a setup to drop into a civic or integra. It is an H23 engine, and B16a tranny, plus other parts toward the swap.
LMK
^^^I agree with what five star just said except the tranny part lol.^^^^^
as for your h23 Crower make some cams for it so you could start there. I can't see you breaking 190whp with the h23 n/a though.... just not enough support out there for that engine..
what about my crank and rods with h22 pistons and oil squirts. Would raising the compression also help it or would that be a waste of time? Cause i got an idea of putting those in the block and still swapping over the h22 head while putting Intake manifold, throttle body, and upgrading fuel system. But i heard that the h23 block can't handle over 6500 rpms, so right know im just lost. It doesn't seem like there are many options for prelude motors.
there are plenty of support for the h series engines... there just expensive and you have to know where to look for them.
Honestly... If I had a h23 USDM or JDM I would boost it. Compression is low enough to support a nice setup with decent/good power and not have to sleeve the block. If you want H23/h22 vtec hybrid it will be very costly. Yes you'll make more power than a h22 (with a few acceptions) but I know of one person (a girl) here in GA that have pulled it off but I dont think the motor is running in tip top shape. So as far as reliability goes based on her I would say no its not reliable. And she has invested a lot of money in that motor.
If you really want to go n/a and build a h series I suggest getting a h22. Don't worry about a intake manifold becuase the h22 intake manny flows great already. Just port out the intake manny and the TB a little bit and your good.
So my suggests are:
get h22
get type s cams and pistons
get a good header (RMF, SMSP, kteller etc..)
GET A GOOD TUNE
that is the cheapest setup I can think of off the top of my head...
DC headers won't be a good choice? And what would the pistons raise the compression up to? What numbers would that put out? I really want to get ready for autocross.
So where would i be able to find a reliable h22 for a decent price?
Originally Posted by Ludester
Well, if you have a civic or Integra to drop the H-series into, the only way to go these days is with the H2B swap kit. It utilizes the stock tranny mounts for those chassis, and mates the H22 to the B-series tranny. This way the tranny is positioned exactly where it was meant to be, and no more broke/binding axles. Plus, the B-series gearing is closer and can make the car much better when running in vtec....especially with bigger cams that have a more peak-like vtec profile.
with a h22 dc is the worse choice you can make. The runners and collectors are the same if not smaller than the stock ones are. its the worse way to invest 2-400 bux or however much the dc header cost.
The type s pistons are 11:1 compression pistons. If you plan on building the head then you can mill the head a little bit and you gain rough ~.2 to ~.5 more in Compression. That should put you at about ~11.5ish compression. Which is not bad for a n/a build on pump gas btw.
numbers? from the dynoes I've seen depending on how healthy the motor is you'll in the 200whp ball park. Might be a little higher.
Well, if you have a civic or Integra to drop the H-series into, the only way to go these days is with the H2B swap kit. It utilizes the stock tranny mounts for those chassis, and mates the H22 to the B-series tranny. This way the tranny is positioned exactly where it was meant to be, and no more broke/binding axles. Plus, the B-series gearing is closer and can make the car much better when running in vtec....especially with bigger cams that have a more peak-like vtec profile.
oh I agree with if you have an integra or civic. yes by all means h2b swap is the more practical bet.
now the better gearing part..... can you post up the gearing of a b series and I'll look at my chart I have right here will all 8 or 9 trannies for the h series and compare gearing that way.
On a side note: If they are worried about vtec I can honestly say from owning a fifth gen prelude, I will not fall out of vtec from launch to fifth gear...
call bestjapanese off of cobb parkway.
Also
here is one just from doing a quick search on hmotorsonline.com
http://www.hmotorsonline.com/shop/sc...age&item=30015
Don't worry about it i'm just going to go ahead and turbo it and call it a day. Any ideas?
it'll give me better horespower numbers to turbo it anyways. Plus i found a kit on ebay for 500 bucks. so with everything else i hope to get at least 250 to the wheels. 300 total and im good.
Turbo is the way to go with that motor, and remember PLEASE tune the car!!
you do not need to get any oil lines or tap the block for vtec. everything is already there. all you need to do is remove the oil orfice out of the h23 block.
i had a H23VTEC hybrid about 2 years ago....
to the oringal thread starter....
if i had a h23 i would put a h22 head on it...other wise get a full h22. one of my friends did a all motor h23 just working on the head and made 180whp. for the amount of money he spent, he could have gotten a h22 head and made as much or more power just by getting the head. would have been cheaper..
if you dont really know what you are doing..i wouldnt suggest turboing a h-series with stock bottom end. alot of guys blow the bottom end up because of weak ringlands on the stock H motors.
94 Supra= 500rwhp
H motors have really weak ringlands, but I thought that if motor never came with vtec and u make it have vtec tapping the block is a must. B, D, or H. Or a oil return kit.
how long did the motor last after you put the vtec head on it?
and i heard that i needed to change over the oil squirters from the 22vtecover to the 23 also.
h22 and h23 block are the same block casting pretty much. all u need to do is remove the oil orfice. it lasted a long time and i sold the car with it.
reliability is always slim when u are building it for a race application.
if you want to learn more about it go to honda-tech.com and go into their prelude forum. in the FAQ there is alot of information on it.
94 Supra= 500rwhp
Cool. Thanks for the info!
ebay turbos FTL !!
BUY MY HATCH <--click the link, cuz.
just wanted to clear some stuff up... H23 is only USDM unless you are talking about H23VTEC from the accord wagon. H22/H23 hybrid is not that costly. All you'll need is a H22 head and anything h22 tbelt touches. thats kind of like a water pump and timing belt change. I would rather spend $300-$400 on a h22 head then a h23 header.
lastly, u cant really say its not reliable beacuse of 1 case....as i cant really say its reliable because mine lasted for a while
back to the topic...if you want to turbo it...i'd say get the mahle pistons and turbo it.... dont turbo the stock h22 or h23 block and expect it to last too long. it will last but not too long....
search on the web (especially Honda-Tech)...there are plenty of sources for any kind of builds...just have to choose what u believe is best and go with your own common sense.
94 Supra= 500rwhp
Thats the best news i've heard preciate it.
He is definitely right about boosting a stock h22 and h23 block. IT WILL NOT LAST LONG. My boy was having rod knock after 2 months. Its crazy! IMO H22's, 23 were never meant to be boosted!
get a h22 swap or a h23/ vtec only way
project- boost coming soon!
Thats fine by me but i've heard of plenty of h22 swap horror stories also. I know it ain't just a walk in the park but damn it looks like im shit out of luck either way i go. I mean even if i build the motor, will it then be able to handle the boost and still be reliable or should i just go with a set of Wiseco pistons and raise my compression ratio from 9.8:1 up to 13:1?
who said anything about a h23 header?just wanted to clear some stuff up... H23 is only USDM unless you are talking about H23VTEC from the accord wagon. H22/H23 hybrid is not that costly. All you'll need is a H22 head and anything h22 tbelt touches. thats kind of like a water pump and timing belt change. I would rather spend $300-$400 on a h22 head then a h23 header.
lastly, u cant really say its not reliable beacuse of 1 case....as i cant really say its reliable because mine lasted for a while
back to the topic...if you want to turbo it...i'd say get the mahle pistons and turbo it.... dont turbo the stock h22 or h23 block and expect it to last too long. it will last but not too long....
search on the web (especially Honda-Tech)...there are plenty of sources for any kind of builds...just have to choose what u believe is best and go with your own common sense.
the only vtec h23 is the eudm accord wagon with a tiptronic auto transmission.
I'm confident that there are plenty of hybrids that have lasted a while. but haven seen none documented. hence I use my one example.
I agree with the mahle pistons for boost. He can however boost the stock block with stock boost just have to get a really good tune and don't run too aggressive of a timing map. stOOpid on honda tech (don't remember his numbers off the top of my head. and Ludetech from preludepower makes 320whp on stock internals at 9psi daily driven for the past year and half to two years. but just like you I wouldn't boost on the stock block either. But can do it. tuning will be the key and how healthy that particular motor is.
So any ideas on what i else i would need to get besides the 13:1 pistons?
i mentioned about the h23 header because this a NA forum and to upgrade or mod an engine...im sure first thing that comes to mind is a header. thats why i would recommend a h22 head instead of a header first.
yes i am aware of ST00PID on honda-tech as well as One-fab's h22 and a few others that were successful at boosting a stock H22....but there arent too many successful candidates in that arena besides the few.
94 Supra= 500rwhp
Damn! 13 IS REALLY high! U better get some name brand rods, arp bolts, make sure the crank is balenced. High compression boost setup is not smart. I know u know that, but for u..... I dont know maybe build the shit out of the 2.3. Do u want VTEC? What do u want?
No i meant i was just going to go with the 13:1 compression all motor no boost. just all power from the jump. And no i don't want "VTEC" actually it irritates me. Cause it turned everyone i know into assholes cause they have "VTEC" snd they think they can conquer the world. I just want to be different. Thats why i bought the Prelude instead of a civic, integra, or 240sx. And to be even more different i want to stop a mud hole in a couple people with h22's that continue talking shit about my car saying its not a true prelude cause i don't have an h22. so all motor with 13 compression or turbo the shit out of it. It doesn't matter to me as long as i can walk an h22 like he's standing still.
Ok do NOT listen to this crap! I made 10 whp off a dc header!!! Have the dyno to prove it!
2009 zx10R
2005 919
2006 xt225 dual sport
Hey dakilla, thats sad that people talk shit about your car. Tell them to go hang themselves!! I hate that! I hope u get the right setup for your car! All this coming from a person that has a h22accord! Vtec is cool, but I dont think I can rule the world! Thats f*cked up. I hope u dust these fools! Then I will come in behind you and dust them again.
Well thats fine but what kind of setup will i need to get those kind of power gains?
Upgrade everthing internally and proper tuning will most def give u your gains u want! Or at least get new sleeves so u can run high boost! GO DARTON!
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