Anyone think this is possible?

[punkrockimport]

ok, may soundstupid but i dont know much, so lets see what people come up with:

an f22a block, with an h22a head on it..

or hell, even the f22a block to any dohc head..

sounds crazy to me, but what do you guys think?

[accordztech]

too crazy...rather swap as a whole.

i seen a f22b sohc on a f22a motor.

[punkrockimport]

it just seemed to me like it wouldn't be possible, kinda how you cant interchange your stuff between d series and b series motors. however, it seems like there are more similarities between f and h series than between d and b's.

but looking at ls/vtec being a weird ass setup(good setup though) it seems like anything is possible.

[MRX]

it is possible actually. The lines match up but the bores don't sometimes in the h22's case. Its really not worth the gain tho because of all the stuff you'd have to nit-pick from the h22 motor. You'll need things like the ecu, different timing belt, various sensors, oil lines plugged...by the time your done you will have spent more than the h22 itself...worth a shot tho

[MRX]

if done correctly tho and if the f22 is build to handle the high revving characteristics of the h22 head then yea it could put out some wicked numbers...but its not a simple route to go if your on any kind of a budget. If i had alot of money, extra time and the skills then yea i might give it a try on a seperate car...but i don't have all that

[90Accord-R]

If you really want a 2.2 liter DOHC VTEC motor, then I think it's best just to get an H22. If our F-Series motors were available in 2.4 or 2.5 liter versions, I think it would be a very worthwhile swap (although probably bore spacing would be further apart to allow for more displacement, which would then make the swap impossible... d'oh!!!). But if it was, you wouldn't have to turn the motor up to 7K+ just to see any power gains and you'd probably see really good power.

[ZigenBallZ]

Originally posted by 90Accord-R
If you really want a 2.2 liter DOHC VTEC motor, then I think it's best just to get an H22. If our F-Series motors were available in 2.4 or 2.5 liter versions, I think it would be a very worthwhile swap (although probably bore spacing would be further apart to allow for more displacement, which would then make the swap impossible... d'oh!!!). But if it was, you wouldn't have to turn the motor up to 7K+ just to see any power gains and you'd probably see really good power.

Eh... a 2.0 liter DOHC along the lines of an F20A DOHC would probably be better than a 2.4-2.5... the increase in displacement would only bring the redline down...

IMO a 2.1 liter sohc F is perfect.... heh heh.....

[90Accord-R]

Originally posted by NoScreenName
the increase in displacement would only bring the redline down...

Exactly... that's what I was hoping to get accross. See, if our motors were larger displacement, putting a higher flowing head, that's geared toward higher rpm use, would be great, beacuse you'd see a gain in power, but would not have to balance the motor to 7500+ rpm... So going through all the hassle of putting an H22 head on a SOHC block would be worth it....

I was just trying to state a theoretical situation...

[punkrockimport]

wow, im surprised that this turned out so much response... in case anybody was wondering, im not planning to try this project by any means. it just was on my mind. i would prolly go with an h22a swap if i were to do it at all, but i dont make enough money to do major mods to my car. i work at taco bell and only get like 10 hours a week. but im in high school so i make enough to pay for my car and insurance and stuff so i cant complain, and occasionally i have saved enough for a bolt on
. cant hurt to learn as much as possible though right?

anyways thanx for checking out the thread

[MRX]

no prob...i actually know a guy who's gonna swap some h22 parts on a f22b2 because he knows how to weld and is pretty skillful in other areas it seems.

[kentucky accord]

actually, increasing the bore wont hurt the redline what so ever. increasing the displacement by stroking the engine and creating an even less favorable r/s ratio will indeed decrease the "redline". redline though is a pretty broad term and we should really be talking about effective powerband and where it starts to fall off.

[90Accord-R]

actually, increasing the bore wont hurt the redline what so ever. increasing the displacement by stroking the engine and creating an even less favorable r/s ratio will indeed decrease the "redline". redline though is a pretty broad term and we should really be talking about effective powerband and where it starts to fall off

This is true... the "redline" is pretty broad when you relate it to r/s ratio too, look at most of Honda's motors, they have technically "worse" r/s ratios compared to say an old 327 Chevy, or a 340 Mopar, but you can't turn a stock 340 to 7500 rpm!!! Not without some serious damage anyway...

[kentucky accord]

Originally posted by 90Accord-R
This is true... the "redline" is pretty broad when you relate it to r/s ratio too, look at most of Honda's motors, they have technically "worse" r/s ratios compared to say an old 327 Chevy, or a 340 Mopar, but you can't turn a stock 340 to 7500 rpm!!! Not without some serious damage anyway...

they may have better r/s ratio than some Hondas but those are "V" engines and not inline like most Hondas. V engines are constantly pulling against themselves and the higher the RPM, the higher the stress level.

[ZigenBallZ]

Originally posted by kentucky accord
actually, increasing the bore wont hurt the redline what so ever. increasing the displacement by stroking the engine and creating an even less favorable r/s ratio will indeed decrease the "redline". redline though is a pretty broad term and we should really be talking about effective powerband and where it starts to fall off.

You are correct sir...

For some reason when i posted that I wasn't even considering a larger bore only the thought of a longer stroke was on my mind...only due to the mention of a 2.5 liter... It'd be interesting to see the massive slugs required to get it up to that without stroking...

but I also had in mind a Subaru boxer type engine for some reason...probably just because of the 2.4-2.5 liter reference that was made...

Gotta love those flat four or flat six VW/porsche engines though... massive bores and long ass strokes are possible...with displacements up to 2.8-3.0 on the fours and I'm not all that familiar with the Porsche flat sixes....but still worthy of mention since slightly less efficient V configured engines were mentioned...true torque monsters are boxers IMO...