Mfoehrkolb

Traded my integra jdm gsr for a h22a civic hatch...

From what he has told me, it's a red top h22a, with a accord transmission...

I find it weird that if it's the red top, why doesn't it have the lsd trans...

So...

Here is my serial number, if anyone can tell me what specifically it is...

H22A
3040625

Kronn 98SH

First digit (3) indicates the year of the model. 1 being first year of that gen, 2 = second, so on. The second digit should indicate ATTS (5) vs non-ATTS (0).

Based on that, I would assume this is from a 1999 Prelude SiR S-spec, which did come with an LSD transmission originally.

If you tell me the transmission code, I can tell you exactly which vehicle/yr/model it came from.

Mfoehrkolb

Transmission: P2A8-1000475

Mfoehrkolb

Kronn 98SH

Sorry for the delay. I was cut off from my resources for a few days.

The P2A8 transmission was used in nearly all the 1998-2002 Honda Accords. The serial # indicates a first year use.

Also, it seems your head stamp indicates 1997, while the block stamp indicates 1999. You have a Frankenstein car.

Mfoehrkolb

--- The head says 97 on it, but also there is a picture of the block with a 97 stamped on it also next to the freeze plug... It's for sure though a 96+ type s motor? the 223hp h22...

EDIT: Oh yeah, this transmission... is the longest geared transmission i have ever experienced. it's quite outrageous, 5th gear @ 75 is like 2k rpms. I came from my itr trans where 75mph was like 4.4k or higher rpms.

Kronn 98SH

Not a Type-S, the SiR S-spec. The motors are the same except the differences in the Type-S block to accommodate for ATTS.

Here's the difference between it and the USDM Prelude transmission gearing:

P2A8:
1st - 3.285
2nd - 1.807
3rd - 1.193
4th - 0.903
5th - 0.685
FD - 4.062

M2U4/M2Y4:
1st - 3.285
2nd - 1.956
3rd - 1.344
4th - 1.034
5th - 0.812
FD - 4.266

Mfoehrkolb

--- Not too sure how to distinguish the numbers as in how it's geared, but...

# Found in the Japanese 5th gen Prelude SiR S-Spec and Type-S (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 top".

That is what i have then "wiki pedia" also... would you happen to know the "redline" and the "fuel cut" of the engine on a stock ecu?

Kronn 98SH

That wiki info was written by me, so it's a valid source.

I believe the redline and fuel cut are the same as the USDM motor.

As for the gearing, the higher the #, the lower/shorter the gear, and the better the acceleration. You'll notice that they have the same first gear, but all the others are much taller for the P2A8.

Mfoehrkolb

--- So what is the redline to begin with? (i never messed with h22 really and i dont know much about them... i was a b series guy and im starting to <3 this motor though)...

So the prelude trans is just all around better... just since its considerably a lot lowered geared.

From what i just read, the redline on h22 is 7,200... but on the type s, it seems to peek at 7,200 so i dont see why the redline would be the same as the lower hp models.

Rude Awakening

redline is 7400 for all H22. Fuel cut is 8000 for all, regardless of the power and rpm of max power.

But yeah, get a new tranny. I find even the 5th gen H22 tranny too long. T2W4 is where it's at.

Mfoehrkolb

--- Ah well i was under the assumption that redline and fuel cut was 7,200 lol. Does my motor the sir i think is what i have, has more aggressive cams and like the b series... came with different valve train to compensate for that. I could be wrong because its b series i am comparing it to.

Kronn 98SH

You have the TypeS pistons, a mild Port&Polish, and possibly the dynamic air intake. The compression ratio is also 11:1 vs the 10:1 USDM motor.

Mfoehrkolb

--- So the cams are the same? I was reading other people building h22 for n/a and they were saying to run type s cams... but that might have been like euro type s or something that i may have over looked.

but if its the same cams, i understand that the redline and fuel cut would be the same as other models.

Kronn 98SH

I'm not sure on the cams. It's possible.

Mfoehrkolb

http://www.preludeonline.com/f93/my-...stions-107484/

here is a thread talking about the type s cams and how they are more aggressive than other aftermarket cams. just read down and you can see what was said... idk if it's the truth though, they didn't post any official measurements but... that's what i was going off of.

EDIT: They did have some measurements...

"Crower Stage 2- .466/.445
Type-S- .480/.441
Skunk Stage 2- .505/.465"

Mfoehrkolb

anyone else have some info on the cam situation?

A Blue Lude

?
Looks like a 97 stamped on the block too.

http://i49.photobucket.com/albums/f2...1/f2ce180f.jpg

Mfoehrkolb

yeah that's what i said before, there is a 97 on the block and head. but the serial states 99 like the other fellow has stated.

A Blue Lude

Well the 3rd year of the 5g in Japan would be 1998, and there is often a 1-year difference between production and model year.

But I wouldn't worry about it too much.

Mfoehrkolb

--- the biggest thing i am trying to figure out is... if the cams are different than the normal h22a non type s/sir models... and about the valve train and fuel cut limit.

IE. b series

b18b1 - 7,200 single valve springs (intake/exhaust)
b18c1 - 8,200 upgraded cams, dual valve spring exhaust
b18c5 - 8,500 upgraded cams, dual valve springs (intake/exhaust)

Not 100% on numbers, but pretty sure off the top of my head... but yeah... just trying to figure it all out so i don't over rev it, and or push it where i shouldn't be.

A Blue Lude

The "S" stuff made peak power higher but the cluster showed the same rev limit and I imagine fuel cut is the same at approx 7700.

Mfoehrkolb

--- who is correct?

As for the fuel cut and redline being the same for all h motors... is there a difference in cams?

My engine also has butterfly valves similar to the gsr stock intake manifold. Is that normal for h series?

Rude Awakening

Look at MY needle:

Again, redline 7400 on the cluster, as I rev to 8000:
http://www.youtube.com/watch?v=Y6vbQfBPYLk

This a Type S 220HP cluster:

http://www.youtube.com/watch?v=ESj-4i9d9lM

Same 7400 redline as well.

Type S has more aggressive cams. They have a blue tint to them physically that regular ones don't. The Type S manifold should be single runner. Regular H22 has GSR style butterflies.

A Blue Lude

The tach isn't accurate. The S engines also have a GSR style intake manifold.