Lude Generation

Hi Guys,

Off to check out @knightmare's UKDM BB1 tomorrow.

So, I was going to be after a decent H22A JDM engine at some point in the next few months, to use for the 2.2 Manual conversion I've got planned on my Auto Gen3.

As it happens, this car has come up & there's a few other bits on it that will be of use. So seriously considering it.

Only problem is, it's a H22A2. I don't like the idea of UKDM myself, because I don't want to be at a loss for power! It's just my preference, that's all.

However, I was speaking to @Dbo earlier, and he informed me that the only differences between these two particular engines is the Knock Sensor, and the P13 ECU. If these were to be applied, I should then be achieving the (theoretical) 197bhp of the H22A.

So my enquires are;

a) Does everybody agree with this?
b) Is there anything else that might be different between these two engines, such as compression, that could prevent me from achieving the stock 197bhp I require?

I need to confirm this from multiple people, because I don't want to get this wrong! I'll be pretty upset if I go to all the effort & expense of getting this conversion done, only to find out I invested in the wrong engine.

So please could you confirm if you are certain, so I can establish how to proceed.

Cheers Guys.

The H22 debuted in the U.S. in 1993 as the H22A1 for use in the Honda Prelude VTEC. Since then, versions of the H22 would become the Prelude's signature high-performance engine worldwide until the end of Prelude production in 2001. Variations were also used in the SiR Accords in Japan and Europe. In 1994, Honda of Europe used the H22A cylinder head and the H22A engine block as the Formula 3 engine which was an H22A engine destroked from 2.2 liters to 2.0 liters (F3-2000cc)to compete in the European F3 series. It was then used by Mugen Motorsports as the F20B from 1997-2001. In 1995-1997, Honda of Europe used the same H22A-based F3 engine in the British Touring Car Championship (BTCC) Honda Accord. Also, in 1996-1997 Honda of Japan used the same H22A-based F3 engine in the Japan Touring Car Championship (JTCC) Honda Accord and won the JTCC for both years. Honda of Europe hired Neil Brown Engineering of England to convert the H22A engine to an F3 engine which would be later used in BTCC and JTCC.
Specifications"
Bore × Stroke: 87.0 mm × 90.70 mm (3.43 in × 3.571 in)
Displacement: 2,157 cc (131.6 cu in)
Valve Configuration: DOHC, 16 valves, VTEC
Type: In-line 4 cylinder, aluminum block and head
Compression ratio: 10.0-10.6:1 (North America); 10.0-11.0:1 (Europe); 10.6-11.0:1 (Japan)
Max power: 185-220 hp
Redline: 7200/7600 rpm
Rev Cut: 7400/8000 rpm
Engine Control System: Honda Systems PGM-FI with port fuel injection
Valve Gear: Belt-driven dual overhead cams, 4 valves per cylinder, variable timing and lift[2]
92-96 versions use closed-deck blocks but FRM liners were used in 94-96, while the 97-01 versions used open-deck blocks with FRM liners.
H22A
Found in the Japanese 4th gen Prelude Si VTEC (2WS BB4 & 4WS BB1). It produces 200 PS (147 kW; 197 hp) @ 6,800 rpm & 161.50 ft·lbf (218.96 N·m) @ 5,500 rpm and comes with a black valvecover.
Found in the Japanese 5th gen Prelude SiR (2WS BB6 & 4WS BB8). It produces 200 PS (147 kW; 197 hp) @ 6,800 rpm & 161 ft·lbf (218 N·m) @ 5,500 rpm and comes with a black valvecover.
Found in the Japanese 5th gen Prelude Type-S and SiR S-Spec (BB6). It produces 220 PS (162 kW; 217 hp) @ 7,200 rpm & 163 ft·lbf (221 N·m) @ 6,500 rpm and comes with a red valvecover.
Found in the Japanese 6th gen Accord/Torneo Euro-R (CL1). It produces 220 PS (162 kW; 217 hp) @ 7,200 rpm & 163 ft·lbf (221 N·m) @ 6,500 rpm and comes with a red valvecover.
Found in the Japanese 5th gen Accord SiR Sedan (CD6). It produces 190 PS (140 kW; 187 hp) @ 6,800 rpm & 152 ft·lbf (206 N·m) @ 5,500 rpm and comes with a black valvecover.
Found in the Japanese 5th gen Accord SiR Coupe (CD7). It produces 190 PS (140 kW; 187 hp) @ 6,800 rpm & 152 ft·lbf (206 N·m) @ 5,500 rpm and comes with a black valvecover.
Found in the Japanese 5th gen Accord SiR Wagon (CF2). It produces 190 PS (140 kW; 187 hp) @ 6,800 rpm & 152 ft·lbf (206 N·m) @ 5,500 rpm and comes with a black valvecover.
H22A1
Found in the American 4th gen Prelude VTEC (BB1). It produces 190 PS (140 kW; 187 hp) @ 6,800 rpm & 153 ft·lbf (207 N·m) @ 5,500 rpm and comes with a black valvecover.
Found in the Canadian 4th gen Prelude SR-V (BB1). It produces 190 PS (140 kW; 187 hp) @ 6,800 rpm & 153 ft·lbf (207 N·m) @ 5,500 rpm and comes with a black valvecover.
Found in the Australian 4th gen VTi-R (BB1). It produces 190 PS (140 kW; 187 hp) @ 6,800 rpm & 153 ft·lbf (207 N·m) @ 5,500 rpm and comes with a black valvecover.
H22A2
Found in the European 4th gen Prelude 2.2i VTEC (BB1). It produces 185 PS (136 kW; 182 hp) and comes with a black valvecover.
H22A3
Found in the 1996 VTEC model (BB1) in various countries around the world denoted with regional code KU. It comes with a black valvecover.
Found in the 1994 Honda Accord Coupe SiR with the cd8 chassis in countries like New Zealand. Built in the USA yet sold only overseas. Reputedly 182hp peak output.
H22A4
Found in the American 5th gen Prelude Base and Type-SH (BB6). It produces 200 PS (147 kW; 197 hp) @ 7,000 rpm & 156 ft·lbf (212 N·m) @ 5,250 rpm and comes with a black valvecover.
Found in the Canadian 5th gen Prelude Base, Type-SH, and SE (BB6). It produces 200 PS (147 kW; 197 hp) @ 7,000 rpm & 156 ft·lbf (212 N·m) @ 5,250 rpm and comes with a black valvecover.
Found in the Australian 1997-1998 Prelude VTi-R and VTi-R ATTS (BB6). It produces 200 PS (147 kW; 197 hp) @ 7,000 rpm & 156 ft·lbf (212 N·m) @ 5,250 rpm and comes with a black valvecover.
H22A5
Found in the European 1997-1998 Prelude 2.2VTi/VTi-S (2WS BB6 & 4WS BB8). It produces 185 PS (136 kW; 182 hp) and comes with a black valvecover.
H22A7
Found in the European 1998-2002 Accord Type-R (CH1). It produces 212 PS (156 kW; 209 hp) and comes with a red valvecover.
H22A8
Found in the European 1999-2001 Prelude 2.2VTi/VTi-S (2WS BB6 & 4WS BB8). It produces 200 PS (147 kW; 197 hp) @ 7,100 rpm & 156 ft·lbf (212 N·m) @ 5,250 rpm and comes with a red valvecover.
H22Z1
Found in the Australian 1999-2001 VTi-R and VTi-R ATTS (BB6). It is thought to be identical to the H22A4, however, there is speculation that power was increased from 200 PS (147 kW; 197 hp) to 203 PS (149 kW; 200 hp). It comes with a Black valvecover.

IIRC the JDM runs at a slightly higher compression, hence the higher power output.

Just adding a knock sensor and the correct ECU won't change much, if anything, IF you can add a knock sensor to a UKDM engine?!

Somebody can correct me if I'm wrong, but isn't the JDM H22A higher comp than the UKDM model? Or I could just be getting confused with the later motors, there have been so many

*Edit

Argh, beaten to it!

jjmartin349571 wrote:Somebody can correct me if I'm wrong, but isn't the JDM H22A higher comp than the UKDM model? Or I could just be getting confused with the later motors, there have been so many

That's why I'm confused...cos there are so many derivatives.

^+1

newkid wrote:Compression is different,10.1 ukdm jdm 10.6

Does that definitely go for the H22A2 as well?

Is there a way of remedying this, or is it not cost-effective?

Ok, it looks like I'm just going to have to source a JDM! This would seem to be the most cost effective option (bang for buck).

But for a laugh Newkid, how much approx to get pistons changed, & compression up to 11.1? Between £? and £?

Yeah, great mods...but considering you can pick up a good H22A for £200-£300 and still do those mods afterwards, it would seem to be an obvious choice to me. Agree?

And a new question if may;

What part is different then between the two. Head, block, or both?

or

Can I use anything on a H22A2 that is the same as the H22A? (i.e to uprate in the meantime, then bolt to the JDM I eventually acquire)? For example the head - for gas flowing & porting.