Well this motor mod, the h22 head on a h23 block, has been around for a while and lots of people on here had experimented with it. Some with good experiences and some with bad experiences. So I'd like to know how many miles are one your h22/h23 hybrid since I'm considering doing this with my h23 or maybe just turbo it. I can't decide between a mild boost (6-8 psi) or all motor h22/h23 hybrid as far a reliability for an everyday vehicle.

 

I had about 17k on mine before she went... I'm assuming it was the rod bearings but I still haven't pulled it apart... It was revved to 7900 on the tach through most gears...

 

I think I had 7 or 8k on mine before a nut fell into the damn intake while it was running....

now that I've got it taken apart, I found out my machine shop didn't check the piston-to-cylinder clearances and they were actually WAY too loose and the piston skirts and cylinder walls were scarred to hell.

For the money, boost is more power for the buck.....but it is nowhere near as reliable.

 

well from everyones experiences on here with h23 VTEC i would say its not very reliable eaither.

 

6+ years

Jeff from Import Builders had his for a few years, revved to 8K daily with a GSR ECU. He sold it and the owner still drives it around to this day...

Ive said it before and Ill say it again, H23 VTEC's can be very reliable... Its all in how its built and set up

 

this whole thread is pointless because it seems to me you guys think there are mass differences between the h23 and h22. there isn't. the h22 is just the h23 block with a vtec head. only difference is a little bit larger crank. there's technically nothing else going on except for more torque being produced, there would be no reasons scientifically why an h22/h23 would be any different from a regular h22, as its the same thing with just a bigger crank.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jnet &raquo;</TD></TR><TR><TD CLASS="quote">this whole thread is pointless because it seems to me you guys think there are mass differences between the h23 and h22. there isn't. the h22 is just the h23 block with a vtec head. only difference is a little bit larger crank. there's technically nothing else going on except for more torque being produced, there would be no reasons scientifically why an h22/h23 would be any different from a regular h22, as its the same thing with just a bigger crank. </TD></TR></TABLE>

Wow... Well that is basically what we are discussing... The bigger crank (longer storke) gives a poor rod/stroke ratio causing more sideload and stress on the rod bearings which are known to failure in h23s... So we are quite aware the the h22 and h23 are the same except internally, but that doesn't mean you can treat an h23 bottom end like an h22 right out of the box... and I agree that...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Innovation &raquo;</TD></TR><TR><TD CLASS="quote">H23 VTEC's can be very reliable... Its all in how its built and set up </TD></TR></TABLE> ...