Frankenstein swap.

moved

I wanna do a frankenstein swap in my '94 Prelude but i really dont know much about it. I have already posted on preludepower.com, and honda-tech.com, and no one has really gave me any help. Does anyone on here know anything such as a parts list, things i have to do to the block, etc.

Any help would be nice.

Check Honda society. There may be references there. I know a couple people are doing the swap

9_2_C_B_7 wrote:

I wanna do a frankenstein swap in my '94 Prelude but i really dont know much about it. I have already posted on preludepower.com, and honda-tech.com, and no one has really gave me any help. Does anyone on here know anything such as a parts list, things i have to do to the block, etc.

Any help would be nice.

what frank G22, G23 non-vtec, G23 vtec. H23 vtec.

i think hes doing a g22 i heard?

if that's the case. i'm asuming you have a S prelude. puting a h head on a stock f block is not the best idea.

1. your comp will drop to adout 8.5:1. witch is no good for a head made for higher reving.
2. the h has a bore of 87mm and the f is 85mm. you can get away with it, but not for long.
3. the money you spend to get done half right you could get a h23 eng or mod the f and run a h22 or h23 tranny, and have a faster car.

just something to think about

No, h23 vtec. and yes on my prelude s f block.

hope this helps http://honda-tech.com/showthread.php?t=510617

Im past trying to make it fast. lol. i also have a f23 vtec sohc head. I heard they use the same block as an f22. You know anything about it? I would put the f23 on it if it would get it running. lol.

most people use the f series block. and the h series head. with that setup rumor has it, that it puts down more hp than a k

Dont get me wrong, id love to have to h23 in my prelude, but i just want her on the road again. if i can save a lot of money with just using my f23 head, i will. My lude is wayyyyy to clean to have her sitting in a garage. =/

I think the h23 would look sickkkk under the hood of my lude. But im on a limited budgit. lol.

9_2_C_B_7 wrote:

Im past trying to make it fast. lol. i also have a f23 vtec sohc head. I heard they use the same block as an f22. You know anything about it? I would put the f23 on it if it would get it running. lol.

the head should bolt on, but it wouldn't be worth it IMO. SOHC VTEC heads aren't really proformanced based. if you F22 is running i'd say stick with that.

get the head rebuilt and have milled. a bisimoto or delta cam, h23 IM with a IAB double stack, and a tuneable ecu, and lastly a h22 or h23 tranny.

if you have you heart set on a frank swap. i could help you put together a G23 non-vtec, there are a few f23 eng showing up a pick a part now hopefully there will still be some when i get some money.

i found a prelude today with h22 swap. they want to trade it for a 4 door honda

xjoshx wrote:

i found a prelude today with h22 swap. they want to trade it for a 4 door honda

Preludes have H22's stock






If it's a fifth gen

Some have h23s... And that's prolly what it was stock. So they swapped to a h22

like i said. im past trying to make it fast. i have a h23 head and a f23 head sitting in my garage and i just want to get it running. i wanna do whats easiest and cheapest. And my f22 isnt running. My cam seized so i wanna throw one of these on. =]

And my baby is a 4th gen. She is sooo pretty. =]

sell?

Eee that prelude is sick. Y don't you trade one of those heads for a f22 head. Easiest cheapest way I think. And the f22 has way more potential.

9_2_C_B_7 wrote:

like i said. im past trying to make it fast. i have a h23 head and a f23 head sitting in my garage and i just want to get it running. i wanna do whats easiest and cheapest. And my f22 isnt running. My cam seized so i wanna throw one of these on. =]

And my baby is a 4th gen. She is sooo pretty. =]

make it in to a F22a6. a6 head(with cam), PT6 ecu, a6 IM or H23 IM (with iab black box)

If your going to Frankenstein the prelude, what is already in it? Are you gonna build an N/A engine or Turbo it? Build a F22 or F23 bottom end and put the H22 head on it with upgraded cams, like Bisimoto.

The F22 or F23 bottom end is far more desireable because it has cast iron sleeves and is way stronger than the H22 block.

xjoshx wrote:

sell?

Sell what? lol.

And i never really thought about tradeing one of those heads for a f22a1 or a6 head. I might put an add up on craigslist or ask around to my friends. Thanks for the idea. =]

i don't if you feel like making the drive, but at the pick a part here you could get a head for about $40.00, IM @ $25.00, and a ecu @ $ 35.00

SiRWannabe wrote:

If your going to Frankenstein the prelude, what is already in it? Are you gonna build an N/A engine or Turbo it? Build a F22 or F23 bottom end and put the H22 head on it with upgraded cams, like Bisimoto.

The F22 or F23 bottom end is far more desireable because it has cast iron sleeves and is way stronger than the H22 block.

he has a S trim lude, it comes with a f22a eng. the F are good but come with there own set of problems. the H22 & 23 are close deck block better suited for high HP. only problem is FRM sleeves. and the only way around that is to buy special piston made to work with the sleeves. and that's only if they are in good shape cause FRM sleeves can't be bored out.

with F blocks the sleeves are iron and can be bored to about 1.5mm safely. buttttttt, they have a open deck design, under higher HP they can shift. turning your freshly built eng in to a handy boat anker. you can use sleeve guard and sleeve pegging. but if done wrong will cause hot spots & eng failure.

f23 rod are not strongest so i wouldn't use stock one for more than 250-300 HP. and aftermarket rods are over $800.

Read this on why you should mate the f23 bottom end with an H22 head

http://www.importtuner.com/tech/impp_0902_k24_vtec_versus_g23_vtec_tech_knowledge/index.html

Use that list, but use an H series transmission and axles instead

11.5:1 Compression ratio using K20 pistons on F23 Block with H22 head

sell the lude