Well I finally got around to tearing down my old H23a1 block that I spun the bearings in about a year ago... At least I was assuming that I spun the bearings since there was tons of metal shavings in my oil pan and it was making a tapping noise for the last month or so of driving...

And for those who are wondering, yes I was over-revving the **** out of it... Went to 8k constantly, but only to stay in VTEC (Not because I thought I was making power that high)... I'm assuming it was because I was still using an H23 tranny that the revs would fall below VTEC engagement during shifts... The night I spun the bearing I was unaware that I was low on oil, and my motor was over-heating... Still never figured out why though, probably because I was dangerously low on oil... I think if it were not for that my motor would have lasted... It's all about maintaining...

Before I even took it apart I immediately noticed that rod number 3 didn't look right... This picture is semi-blurry but you can see the bearing sticking out... There was a lot of play on the rod journal where as the other rods were all firmly in place...



And after I pulled the crank out, rod bearing number 3 didn't want to come off... Obviously because it was fucked...




This is a shitty looking bearing... All the other bearings seemed fine... Slight scarring but nothing too bad for having 100k+ miles and being abused like they were...


The rods seem to be fine as well as the crank and block... I plan to have this block sleeved and build it with forged internals and then swap it out for the F23 block... After I have this block built I'm sure I will see how much boost the stock F23 block can hold... Not sure what the plans are exactly as of right now... Most likely will have the crank destroked and use a longer rod with an 89mm bore...




Modified by Sam1am26 at 11:50 PM 7/1/2005

 

Yup, oil is even more crucial for a motor revving that high.

Good job! You gonna keep the crank as a trophy?

 

errrrlllll pesssshhhaaaa

 

thats weird that you say you fell out of vtec because with my h23 vtec i only rev to 7k and only fall out of vtec on the 1-2 shift, other then that it is fine....im using my old h23 tranny also.

 

Hmm I wonder how many people only spin rod bearing on the H23. My car came with ALL FIVE main bearings completely screwed, block hosed. The rods were "fine" but had a lot of main bearing material worn into them so it was only a matter of time before they went too.




Pirate

 

well when i thought i spun my rod bearings, the main bearings were in fact in a lot worse condition, so i think main bearings take just as much of a beating if not more.

 

i dont want to thread jack, but i wanted to get some info from some of you guys, since u guys seem to know what ur talking about.. "most" people argue w/ me in regards to doing the h23/vtec.. personally i dont see too much of a diff from people doing an ls/vtec.. i have built my own h22 turbo motor and dismantled an h23 to compare and i dont see why so many people are doggin this hybrid out.. if you guys have any insight on this please i would love to hear!

 

personally i think any h23/vtec will last as long as you dont rev it as it was a f*cking ninja...i keep my rev's to a maximum of 7,000 rpms, and really dont feel the need for any more...with stock cams im prob not making too much power after that anyways....and let me tell you for a stock motor with bolt ons, it gives my friends 12.5:1 b20/vtec with c-t-r cams a run, and his car is only 2400 lbs. well my setup is fairly new, only time will tell how long it will last at my rev limit. for now im having vtec issues

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all mOtor h23 &raquo;</TD></TR><TR><TD CLASS="quote">personally i think any h23/vtec will last as long as you dont rev it as it was a f*cking ninja...i keep my rev's to a maximum of 7,000 rpms, and really dont feel the need for any more...with stock cams im prob not making too much power after that anyways....and let me tell you for a stock motor with bolt ons, it gives my friends 12.5:1 b20/vtec with c-t-r cams a run, and his car is only 2400 lbs. well my setup is fairly new, only time will tell how long it will last at my rev limit. for now im having vtec issues </TD></TR></TABLE>

hmm, i plan on building one for turbo, so im not really looking to really rev that high, im mainly trying to get the added displacement and stroke from the bottom end.. i've seen some turbo #'s and they were sick in comparison to a h22.. i mainly just keep running into so many "haters" that its making me kinda second guess doin it.. even tho, in an odd way it kinda adds fire to me wanting to prove them wrong..

what kinda vtec issues r u having?.. why only rev to 7k?... shouldnt the motor and cams make power past that.. my stock h22 did... at least for at least another 500rpms

 

well i think you should do what you have in mind and not listen to what other people say.

i only rev that high because #1 i dont feel like spinning rod or main breaings or even worse snap my crank or crack a main cap......

2nd im only making about 9.5:1 compression compared to the stock h22's 10.6:1 i believe thats why im not gonna be making as much power up top....but for now its a nice lil setup

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all mOtor h23 &raquo;</TD></TR><TR><TD CLASS="quote">
2nd im only making about 9.5:1 compression compared to the stock h22's 10.6:1 i believe thats why im not gonna be making as much power up top....but for now its a nice lil setup </TD></TR></TABLE> I know what that feels like... I'm guessing your motor is a lot like my old one...

 

lol yeah for now...im gettin type s slugs soon tho on a nice set of rods btw any1 know the compression i will have with type s pistons in a h23/vtec?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all mOtor h23 &raquo;</TD></TR><TR><TD CLASS="quote">well i think you should do what you have in mind and not listen to what other people say.

i only rev that high because #1 i dont feel like spinning rod or main breaings or even worse snap my crank or crack a main cap......

2nd im only making about 9.5:1 compression compared to the stock h22's 10.6:1 i believe thats why im not gonna be making as much power up top....but for now its a nice lil setup </TD></TR></TABLE>

yeah thats a good point.. i kno what low compression can do to a high revving head.. but all in all to me that makes the set-up all that much more impressive.. low compression only revving to 7k and giving a hatch w/ b20/vtec a good run?.. is this in a "prelude" at that?....

i know there's things that can be done to the h23 crank to make it stronger, but is it really that much weaker than the h22 crank?... cuz i have a h22 closed deck block(sleeved) w/ 9.5:1 je pistons, dmp rods, stock everything else and the hard parts handled 26+psi of boost, be it on street tires, w/ pump gas w/ repeatedly spinning to at least 8200, even tho w/ that kinda of boost it made power all the way to 9k

 

yeah my motor is in a gutted lude, but the again so is the 4 door civic i ran, it weighs in at 2400 with driver. we are about the same equal drivers also...

i wouldnt rev a h23 bottom anything past 7,500 fully balanced and i would even be scared to push it that far. just because of the longer stoke makes it so much weaker.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all mOtor h23 &raquo;</TD></TR><TR><TD CLASS="quote">yeah my motor is in a gutted lude, but the again so is the 4 door civic i ran, it weighs in at 2400 with driver. we are about the same equal drivers also...

i wouldnt rev a h23 bottom anything past 7,500 fully balanced and i would even be scared to push it that far. just because of the longer stoke makes it so much weaker.</TD></TR></TABLE>

hmm thats pretty good then.. specially when im puttin this in a completely gutted 96 hb.. im sure this has been covered in this section.. but do u kno the stroke diff between the h22 and 23... do u have any opinions w/ using the f23 crank...

my plan is to build this as a turbo motor.. and i can help it, im a displacement junky.. kinda want to go as big as possible .like 2.4-2.5liter w/ boost... cause i want the motor to be very responsive, but still make good mid-top end power.. right now im planning on using the h23 crank and get it shot-peened, sleeve the block .25 over w/ 11:1 JE pistons.. im assuming this would put me close if not over a 2.4l... im not worried about the compression and boost tho.. it will be ran only on race gas and w/ the AEM ems

 

h22 is 90.7 mm h23 is 95 and f23 is 97...i myself in the future will run a f23 bottom end bored to 88 mm and 12.5:1 + compression...it will be a 2.4L so it should be a beast before and after vtec.

stay with the h23 for boost imo, and just get is sleeved to 88mm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all mOtor h23 &raquo;</TD></TR><TR><TD CLASS="quote">h22 is 90.7 mm h23 is 95 and f23 is 97...i myself in the future will run a f23 bottom end bored to 88 mm and 12.5:1 + compression...it will be a 2.4L so it should be a beast before and after vtec.

stay with the h23 for boost imo, and just get is sleeved to 88mm</TD></TR></TABLE>

hmm thats good ishh.. thank for the info.. i didnt know there was that much of a diff in the stroke.. especially to that f crank.. wow... initially i didnt think the h23/vtec swap was worth it, since i thought the only advantage was a lil tiny bit of displacement... damn now im even more anxious to finish

 

lol yep good luck with the build bro.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jmcmil6 &raquo;</TD></TR><TR><TD CLASS="quote">
right now im planning on using the h23 crank and get it shot-peened, sleeve the block .25 over w/ 11:1 JE pistons.. im assuming this would put me close if not over a 2.4l... </TD></TR></TABLE>

If you sre going to sleeve you might as well go with a bigger bore... With .25 over it still isn't technically a 2.3L even...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all mOtor h23 &raquo;</TD></TR><TR><TD CLASS="quote">i myself in the future will run a f23 bottom end bored to 88 mm and 12.5:1 + compression...it will be a 2.4L so it should be a beast before and after vtec.</TD></TR></TABLE>

88mm bore x 97mm stroke is not 2.4L... It is 2359.82cc... With an 89mm bore it would be 2413.75cc...

 

so i guess the h23 isnt a 2.3L either since its displacement is only 2259 and the h22 isnt a 2.2L cuz its displacement is only 2156

what you think about 89mm sleeves on street use? is it safe or too risky? would the walls be too thing on the f23?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sam1am26 &raquo;</TD></TR><TR><TD CLASS="quote">

If you sre going to sleeve you might as well go with a bigger bore... With .25 over it still isn't technically a 2.3L even...
88mm bore x 97mm stroke is not 2.4L... It is 2359.82cc... With an 89mm bore it would be 2413.75cc... </TD></TR></TABLE>

excuse me for my ignorance .. but how do u convert the stroke and bore to cc's?... i've never known how to do this..

i was considering using that bore since i already have a set of pistons that size, but my idea is to go as big as i can.. so im completely open to ideas... but if im correct i think ge will sleeve up to 89mm only... ????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all mOtor h23 &raquo;</TD></TR><TR><TD CLASS="quote">so i guess the h23 isnt a 2.3L either since its displacement is only 2259 and the h22 isnt a 2.2L cuz its displacement is only 2156

Exactly... I hate rounding...

what you think about 89mm sleeves on street use? is it safe or too risky? would the walls be too thing on the f23?</TD></TR></TABLE>

Not if it is sleeved... 90mm is when it starts getting risky... Anything happens to the cylinders and you have to resleeve, no room for error...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jmcmil6 &raquo;</TD></TR><TR><TD CLASS="quote"> i dont want to thread jack, but i wanted to get some info from some of you guys, since u guys seem to know what ur talking about.. "most" people argue w/ me in regards to doing the h23/vtec.. personally i dont see too much of a diff from people doing an ls/vtec.. i have built my own h22 turbo motor and dismantled an h23 to compare and i dont see why so many people are doggin this hybrid out.. if you guys have any insight on this please i would love to hear!</TD></TR></TABLE>

because the stroke is much bigger..


check my H23 VTEC bearings and caps!

 

Jesus christ.... That must have caused a lot of heat... Hell, most of my main bearings were about shot but my caps looked nothing like that...

 

yeah.. wow!..

hmm does anybody know if those acl bearings could hold up w/ that bottom end to get it to spin to at least 8k. I kno that for forged pistons u dont need the oil squirters but if i can get them to clear the crank w/ room to spare im gonna install some as well.