New Idea...bare with me folks - Honda Prelude Forum

knightluder · 06-06-2002, 01:40 AM

Alright...origonally I was going to do an entire swap (h23 to h22 with tranny and lsd.) Now I have been given the idea to just swap in the h22 longblock on my h23 tranny. Will this have any adverse affects? I know the gearing is shorter on the h23 but will I lose that much power? And if so, why? To put it simply, I'm just trying to give my car a little extra umph. So I figured if I am going to keep the car throughout college I mine as well get a newer engine (JDM w/ 40-50,000mi) and while I am at it I mine as well get a vtec motor; hence the h22. I'll probably throw on some simple mods I/H/E and just drive it. Will just swapping the longblock give me any more problems than doing an entire swap? Is there anything I should know. BTW, I'm also going to get a new timing belt and water pump; just to be safe. So what do you guys and gals think? Should I do the entire swap (JDM h22 w/lsd tranny)- $3600 or (h22 longblock w/ timing belt and water pump replacement)-$2100. I'm leaning towards the h22 longblock if it won't affect the durability of my engine. Thanks to all who reply.

Chris

Crate · 06-06-2002, 06:51 AM

uhm. i can get a longblock for about 1200-1400. Or are you talking about installed prices?

knightluder · 06-06-2002, 01:03 PM

I'm talking about installed.

Brady92/4WS · 06-06-2002, 03:03 PM

just go longblock thats what im doing.

knightluder · 06-06-2002, 04:41 PM

Will there be any problems with an h22 engine and an h23 tranny?

Eddiebx · 06-06-2002, 04:47 PM

Quote:

Originally posted by knightluder
Will there be any problems with an h22 engine and an h23 tranny?

Mechanically it should be just as good as an h22 tranny, but I believe the gearing is actually a bit taller, and will cause you to fall out of VTEC when you shift. This is what my friend told me happens to him, he's got a 5th gen with an h23 tranny in there.

Eddie

93si4ws · 06-06-2002, 04:48 PM

no problems, i ran around for 6 months with my 2.3 trans, but if you have the money i'd get the jdm trans with lsd.

knightluder · 06-06-2002, 07:43 PM

So what is the difference in gear ratios? How will I fall out of VTEC?

Z · 06-06-2002, 07:53 PM

the gear i have trouble keeping in vtec is 1st gear to 2nd gear... it just seems to drop down to 4800-5000... i always have a lighten flywheel if that helps... but i can stay in vtec in all the other gears easily...

this is a jdm h22a with h23 trans...

marshdoggg · 06-06-2002, 08:39 PM

Quote:

Originally posted by knightluder
So what is the difference in gear ratios? How will I fall out of VTEC?

h23 tranny is geared a little bit longer than h22 tranny, not shorter...dont know the exact gear ratios though.
marsh

elprez2000 · 06-06-2002, 09:10 PM

yea the h23 tranny is geared longer, mine is holding up fine with my jdm h22

knightluder · 06-06-2002, 09:19 PM

Thanks for all of the info guys, I think I'm gonna go with the h22 longblock.

brendon2k · 06-06-2002, 09:34 PM

Quote:

Originally posted by knightluder
So what is the difference in gear ratios? How will I fall out of VTEC?

Yes like everyone said you will fall out of vtec on the 1-2 shift, but you can just get a vafc and lower the vtec engagment so you don't fall out going into 2nd.

Brady92/4WS · 06-07-2002, 08:07 PM

So shifting at 8000 on the tach will cause you to fall out of vtec with the h23 tranny?

brendon2k · 06-07-2002, 08:12 PM

Quote:

Originally posted by Brady92/4WS
So shifting at 8000 on the tach will cause you to fall out of vtec with the h23 tranny?

The 8k thing is for 5th gens. I don't think our tach is off by that much so I thing you hit the rev limiter before hitting 8k on the tach.