looking for the easiest swap. not sure if the H motors are as easy to swap as F. if i do the H, will i have to get a bigger exhaust over stock f23a1? need a mount kit for either swap>? linkage etc?

thanks in advance.

https://honda-tech.com/zeropost?cmd=fshow&id=18


Modified by b18crx at 6:12 PM 11/14/2007

 

Well to be honost, for simplicity it would be the H23A (US Version). The H23A is non-VTEC in the US. In the European Accords, they have the VTEC H23A. The F20B has VTEC, so unless you have VTEC already, you'll have to rewire your harness. Here are the differences:

H23A non-VTEC has decent HP and Torque
H23A VTEC has good HP and Torque
F20B VTEC has good HP and decent Torque
--I think with the F20B, it has steel sleeves stock from the factory where the H23A does not.

Not to sure on prices, but here are the specs for each engine--

H23A1
The H23A1 was an increased-stroke, non-VTEC version of the H22a, designed for the North American market version of the 1992–1996 Honda Prelude Si. It shared the same Fiber Reinforced Metal (FRM) cylinder wall liners with the H22a.

Specifications--
Bore x Stroke: 87.0 x 95.0 mm
Displacement: 2258 cc (138 cu. in.)
Valve Configuration: DOHC, 16 valves
Type: In-line 4 cylinder, aluminum block and head
Compression ratio: 9.8:1
Max power: 160 hp (119 kW)
Max torque: 163ft·lbf (207 Nm)
Redline: 6500 rpm
Engine Control System: Honda Systems PGM-FI with port fuel injection
Valve Gear: belt-driven dual overhead cams, 4 valves per cylinder
There is also a DOHC VTEC version of the H23A, available in the CH6 and CL2(4WD) accord (CF4 wagon) SiR in the European Markets.

Specs remain largely similar to the H23A for North America, albeit differ in the introduction of VTEC mechanism and more power

Specifications
Compression ratio: 10.6:1
Max output : 200 PS @ 6800 rpm
Max torque : 220 Nm @ 5300 rpm
Redline: 7200 rpm


F20B
The F20B was used in the CF4 Accord/Torneo SiR from 1997 to 2002 and the the CF4 Accord/Torneo SiR-T(manual) from 1997-2000. The F20B made a max of 180PS @7000 RPM with a redline of 7400 RPM in the SiR and 200PS @7200 RPM with a redline of 8200 RPM in the SiR-T. It uses a DOHC VTEC cylinder head similar to the H22A found in the Prelude but was designed to comply with many countries' sub-2.0 liter tax. The automatic transmission versions received the lower hp version, as it was tuned for more mid-range torque than its manual transmission counterpart. The F20B is adorned with a blue valve cover.

Specifications
Bore × Stroke: 85.0 × 88.0 mm
Displacement: 1997 cc
Valve Configuration: DOHC, 16 valves, VTEC
Compression ratio: 11.0:1
Max power: 180-200 hp (134-149 kW) @ 7000 rpm
Max torque: 141-144 ft·lbf (189 N m) @ 5500 rpm

Hope this helps

 

I have a F20B for sale $900 obo
602-791-3721

 

why u selling? installed yet? lsd? info?

 

I hardly get on here so better to call. I bougth the engine from Rob at Hasport a couple months back and he had removed the skunk 2 cams and dual valve springs but did it without removing th ehead. In the end he lost two of the valve keepers down the oil galley so the oil pan needs removed to get them out and the head needs the valves relapped and new valve seals. I have new valve seals and took the head off to do all this but decided to sell my Accord, went and bought a 99 Lexus GS400 instead.
Anyway, Engine after head being donw will be good. It has a USDM non LSD 92' Prelude trans with a new ACT street strip clutch and freshly turned flywheel. Comes with complete intake manifold,fuel rail,injectors,t-body, distributor, vtec solenoid, sensors, and a extra bottom mount T04E turbo manifold I had laying around. The engine was never boosted though fyi. Either weay it's a smoking deal for what I'm asking. Pretty much want it out of my garage so I can work on the drag Civic. 602-791-3721

 

In for wado's f20b.

F and H series tranny's will fit f and h blocks. The H series has an intermediate shaft versus F has a short axle and a long axle no int. shaft. But the f block can accept an int shaft.

So if you bought a H22 or whatnot then you would keep your existing drivetrain and may only have to replace ecu, wire up vtec and iab's. possibly extend your alt wiring and everything else should be r and r.

You would want to get obd2 motor to make things less complicated and could convert your ecu to obd1 if your states emissions allow.

Hope that helps a little. Breeze through the prelude faq section on H series info.

 

its already vtec. what about exhaust? since already 2.3l need to upgrade? and thanks for the advice.!!!!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sauceja &raquo;</TD></TR><TR><TD CLASS="quote">In for wado's f20b.

F and H series tranny's will fit f and h blocks. The H series has an intermediate shaft versus F has a short axle and a long axle no int. shaft. But the f block can accept an int shaft.

So if you bought a H22 or whatnot then you would keep your existing drivetrain and may only have to replace ecu, wire up vtec and iab's. possibly extend your alt wiring and everything else should be r and r.

You would want to get obd2 motor to make things less complicated and could convert your ecu to obd1 if your states emissions allow.

Hope that helps a little. Breeze through the prelude faq section on H series info. </TD></TR></TABLE>

 

You'll need an H22 header for either motor. Thats it.

 

F series for $900. Sounds good to me. Maybe you can even talk him down a little.

 

i agree... gotta figure out what i need first. with this one i have to open it up at the bottom and take out some fallen metal and hope its not somewhere else.....lost.

 

plus some valve work it seems

 

Not just any metal.....valve keepers! So kinda imortant. But I didn't drop them so I don't feel to obad. And yes, you could talk me down a bit since I'm tried of it being in my garage in the way of my EF drag car project and it is more money to spend on the Ef after all! Just bought a Hondata S300 damn it! lol Anyway, it's a good deal for the for the price if you ask me.

 

forgot to mention about your comment about "opening the bottom end" all you have to do is remove the oil pan since they fell into the galley and headed straight there so this is a minor event. In fact, if I wasn't so damn busy I would/should fix all this and sell it for more! But too busy.......

 

I am just gonna put a H22 head on it anyway for the bigger valves and I have one ready to go. Wado maybe we can work something out on shipping for the "lesser price" and I will just go ahead and send you the money.

 

give me a call any time d00d. It's just sitting in the garage wasting space when it could be put to much better use

 

what i need to know is does this motor work with the accord linkage i have? exhaust. ecu? what else do i need for the swap?

 

chipped ecu is your friend.

F20, F23, F22, H22, H23 all have the exact same block design (except the type-SH) and all can share the transmission of each other (again except SH) so the linkage and everything will plug right into place.

Harnesses may need minor mods to fit.

Exhaust will be the same except that only F22, F23, H23 are the same bolt patterns and H22, F20B are the same bolt patterns that goes for both the intake and exhaust side.