i keep my self from wondering witch is a better motor to swap in my cb7 (90-93 accord) but could never find out wich tho... i got the cash for both n i need some one to tell me witch one is better, h22 has 180-200 hp @ 6800 rpm with 160 torque @5500 and f20b dohc has 190 -200 or 210 hp @ 6800 rpm with 147 torque @5600 rpm. they both sound good n all but from my opinion i think f20b sounds good just cuz it comes off a 97-01 acord euro r and the h22 is old n needs some re-tunning soooo plezzz help!!!!!!!!!!!

 

been posted many times before.
the quick response is f20b is cheaper but weaker. the h22 cost more, but also has more tq and displacement.

 

I think the h22 is heavier... but Im not 100% shure though... the f20b comes out of the accord sir-t, and the h22 is in the accord euro r... it's a red top... but I want a f20b... lol I dunno why I have an h22 I jus think they're kool.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by scabbs &raquo;</TD></TR><TR><TD CLASS="quote">I think the h22 is heavier... but Im not 100% shure though... the f20b comes out of the accord sir-t, and the h22 is in the accord euro r... it's a red top... but I want a f20b... lol I dunno why I have an h22 I jus think they're kool.</TD></TR></TABLE>


The H22 is heavier without a doubt. But yes a f20 is cheaper lighter and less tq but more compression. So if you wanted to turbo or build the engine it could be just as fast.. Im an h22 fan myself but always thought bout a f20..

 

any idea what ecu we need to use for the f20b in a cb7?

 

^^^^^^Thats what i was worrying about!!!!!!!^^^^^^^ Maybe P28 Uberdata OBd1 Conversion? Pretty sure theres a post but havent found good 6th gen write up F20B Cb7with pics and a actual parts list.

 

i guess it depends on what you would use your car for.. if it's for daily driving, take the f20b. but if it's for long hauls, take the h22. they're more or less the same.

The f20 would consume less in the city, especially if it's traffic, since it has a smaller displacement. But if you're up for long drives, get he H22. IMO



Im about to have an engine swap, and Im leaning towards getting the H22 since I use the car mostly for long out of town drives. But im looking for a f20b manual LSD tranny to pair it up with. =D

 

Well the stock ecu for an F20B is the OBD2 PCF. I doubt your going to find too many of those lying around. You could try a stock OBD1 P72 from the B18C Integra. If it doesn't run correctly you could always chip & tune it. But they are also becoming hard to find. I would say you would have an easier time using a chipped & tuned OBD1 ECU. P06, P28. P30..etc..etc...

I thought I remember reading that the F20B uses the F series, non FRM sleeve, block and an H22A7 Euro-R head? The F series block is a touch heavier than the H22 so wouldn't that actually make the F20B a touch heavier than the H22?

 

that's what i was thinking. you're right about the cylinder liners being steel not FRM. that should be heavier... then i thought, "maybe the crank is heavier..?" the longer stroke of the H22 should mean more material on the crank.

when i pulled my F23 appart i was suprised to find that the crank felt like nearly half the weight of the assembled bottom end!

surely someone has physically weighed these motors... i'd be interested to see some hard data since people are going to use that as a factor in deciding which motor to run.

 

This may sound stupid but what is the harm of asking, if the F20B uses the H22A7 head then does anyone know how well the H22A7 head would fit on the F23A1?

 

An H22 is heavier without a doubt? Why? I bet that even if there is a difference in weight, it would be so minimal that it wouldn't affect anything at all.

-H22 is a better motor but choosing H22vsF20b comes down to personal preference.
-There is no 180hp H22. Lowest H22 hp is 190 for 92-96 usdm prelude. Unless I am missing something.
-There is no 210hp F20B... I am pretty sure there is a 180ps version which is probably what you will get when you buy it from an engine importer. And there is a 200ps version which is usually harder to find.
-H22 is not "old", it was also in production in 97-01
-Good luck!

If you want the engine to make the power it should be making and be reliable, you need to use a chipped ECU tuned for your engine by somebody who knows what they are doing.

 

It will fit on the F23 block but why not get a complete H22?

 

It's called a G23 VTEC. Do a search and you will see that these hybrid engines are becoming pretty popular. Due to there ability to produce good numbers with a relatively low price tag.

[Back to the F20B topic]

 

GhostAccord:
Since the F20B is using an H22A7 head (redtop - Type R), is is possible to interchange it with the normal head of a normal H22 (blacktop) and both with will work?

Would you or anyone also know what's the differences between the normal H22 and it's type r H22A7 counterpart?

 

From the research that I have done the difference between the 2 is all in the int. & exh. cam profiles, intake manifold and tuning. I would say any H22** head will fit. Depends on what type of DOHC head you want to put on the F block.

 

F20 > H22 oil burning.

 

ok. just to clear, i can put the F20B head to a H22A block (normal h22)? therefore making the H22 engine stronger? while on the other hand, the since the f20B block will get the H22A (black top) head, it'll decrease power.. did I get it right?

 

This thread gives me headaches.

 

I happened to have that ecu and it's for sale.. =X

 

x2!

 

Exactly. It cracks me up that people think there is some huge difference in weight between the two motors. The blocks and heads are almost identical, so why would there be some huge weight difference? If you're worried about the weight difference, for just one meal eat a salad instead of a burger. There, weight difference nullifed.

/end thread.

 

sorry, i know this is an old thread. but i just did a google search for F20B Build and this is a link that was brought up.

i just read on superhonda.com that the F20B is a track engine. the reason the torque is lower on the F20B is because when u down shift into a corner, the lower torque keeps your wheels from loosing grip. totally makes sense why its not a big power, drag racing engine. so if your gonna track your accord, this is a good engine to have under the hood because it was purposely built for road course use.

im searching threads about the actual build. ive read there are wiring issues. what issues are they? also, i want to know about how would someone with a F20 swap maintains the engine. if something breaks, what parts will fit and work? i know somebody is going to say to just put h22 parts in it. but is it fact that u can use H22 parts if, for example, the dizzy goes out or if the timing belt snaps.

 

As has been mentioned a trillion times

An F20B is essentially a destroked H22. Not all the parts are going to swap over and you'd be left with trying to import things or go strictly aftermarket (read: not NAPA parts aftermarket).

Just save yourself the time and trouble of reinventing the wheel and swap an H22. The cool factor isn't worth it.

 

Agreed. If youre that hardup for a Bluetops coolness, buy a BLUE valve cover.

 

H22 all day. If nothing else, because parts are readily available in this country for it.