ludeinsane

Hi! Fellas ...
I'm new on this, and I need sum answers, any help will be aprecciated. Wat is the big deal wit the swap h23 block and h22 vtec head? Wat is soo bad about it? Cuz my car have that setup nd I never had any problems.but I heard that was a bad combi. Nd I want to learn about it.
Tnks!!

bouckarooo

th ony ting rong wit yoer bild is noting..... th frnknsteiiin ngine is gareet, yeor SPELLING though sucks!!! There is nothing worng with building up a frankenstein engine; as long as you build it correctly, just like any other build. You get what you put into it, whether thats money or time or effort, if you dont put any in then you will have bad final product. If this is what you have then post up your build info for the other people who may want to do the same thing.

AMorgan

The biggest issue with this combo is the crank tends to walk under higher revs. My buddy had one set up for a year or two, to the point where I was about ready to just say "everyone else is doing it wrong" then his crank walked.

bouckarooo

i have heard(in passing from one of my tuner buddies) that you can use an f23 crank to replace the h23 N/V crank and that will prevent the issue. Now i do not know if this is correct or not, but i had been told it is(if this info is wrong plese correct it....). The person who told me this had made a nonvtec lude into a vtec lude and that is what he did; i have yet to see his car with any issues. His is a fourth gen with a 92 block with a 95 head and some other parts in it also.

Chris_99BB6

I suppose I never fully understood why anyone would do the 'Frankenstein' build. What are the pros? An engine larger by .1 in size? Are the piston strokes longer? I'm confused. If you want to have a strong H22A, why not just order rods, pistons, crankshafts, cams, valves, springs, and the whole work from King Motorsports or JUN? At least this way you're at least maintaining if not fortifying reliability and increasing durability. This sets you up for not only a strong NA build, but rolls the red carpet for forced induction.

nsbsalt

H22 blocks are sleeved so to bore them out any you have to get them re-sleeved.

indylude18

H23 has a longer stroke, not a larger bore IIRC.

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Bluetop H23a Vtec Swapped NHBP '99 Base

bouckarooo

realistically the only reason to perform a frankenbuild is because you can find all the required parts for cheap and you have the non vtec block already. It is a way to make a little more power in a unique way. I think the only frankenbuild i would actually consider would be the renowned G23 build made of f, h, and k series parts. For a budget build you sure can get the most power.

Chris_99BB6

Is it possible to just drop the F20C engine into a prelude straight up? If my engine ever dies one day (which it probably wont), I would love to put it in there. After driving the S2000, I fell in love with the motor almost instantly. Now I like to watch Hot Version (A show in Japan about racing, drifting, touge battling, challenges, etc.) and apparently there have been builds on the F20C making it a 2.3 and even a 2.4 liter engine pushing NA power in the rage of 400+ and upwards in the 700+ range with forced induction configurations. Of course for the price in all that, I might as well buy a used Porsche and just turbo charge it. Meh, Im rambling again.

bouckarooo

the f20c or f22c would be a very hard swap to do, as the engine alone is like 5-7 grand and then you would have to find a way to fabricate the driveshaft and rear diff into the vehicle, not to mention the wiring issues you would run into. It would be one thin if you could just take an m2b4 trans and bolt it up to the f22c and then have it FF. I am certain thoug htis is not an option. I have seen pictures of integras with the f22c but nary a 'lude. I think the amount of money it may take would be astronomical, and could be spent on an s2000. I have the g23 budgeted at 800o for jdm f23 block, 400 for jdm type r k20 pistons and rings(new fom my buddy); i have the head, the trans, the intake, the ecu and only need now the seals and the minor things. I dunno the g23 is gonna be my winter buidl this year i think.

Chris_99BB6

What are the expected performance gains?

RUDYx23

Good luck on that G23 build Bouk.

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"Confucious once said forgiveness is devine but never pay full price for a late pizza"

dannysimport

I am starting the H23 Frank build and am doing it because I am a Honda mechanic that can do all the work, my H23 was just bored, sleeved, and new bearings. I came across a H22a with bad bottom end and included intake, ex manifold, wire harness, and Hondata p28...kinda makes sense for me...

ludeinsane

Good Luck.. And Let Me Know The Progress U Have Done!!!

pIERCE

Yeah, I have only heard of a couple people using the H23 crank in the H22 block for a little more stroke.