vtekn

hi i have a 1999 honda prelude vtir with a h22z1. im am just wondering what is the difference from a h22a4.


Modified by vtekn at 6:05 AM 9/21/2004

Qfactor

did you mean H22A1...if so the differences are floating cylinders(open deck) and bigger (crank journals excluding 97')

vtekn

Thanks for your reply. When you said did i mean a h22a1 which engine type were you refering too. Because my engine is defeatly a 99 model h22z1. Is this engine a later upgrade, from the 97-98. What did you mean by floating cylinders??

sniffthese

You sure its H22z1 becasue its most likely H22a1 or you may need glasses...Unless honda Decided to trick everyone and but a z in their instead

Monkey Fing a Coconut

his car is also not from the u.s. so its very likely it could be h22z1, could be one of those engines from the vti i think with weird stuff like 5th gen 4ws and stuff...anyways, not much info on it...

Qveon

IIRC h22z1 is a factory replacement warranty engine. Like if your engine blows up before you are out of warranty, you get one of these rebuilt replacement engines.

Monkey Fing a Coconut

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Qveon &raquo;</TD></TR><TR><TD CLASS="quote">IIRC h22z1 is a factory replacement warranty engine. Like if your engine blows up before you are out of warranty, you get one of these rebuilt replacement engines.</TD></TR></TABLE>

wasnt expecting anything like that but good to know

psilo

damn.. i never ever have heard that before. thumbsup queoneoneoneuqnenon

satan_srv

i've also seen that Z engines are factory shortblock replacements..like when the old ones burned too much oil and they got a new shortblock from honda with the Z code

4bidden

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">i've also seen that Z engines are factory shortblock replacements..like when the old ones burned too much oil and they got a new shortblock from honda with the Z code</TD></TR></TABLE>

Word.

vtekn

Yes it is a h22z1 and no i don't need glassers. I spoke to Honda and they believe it is an upgrade model from the 97 to 98 but they were unsure what they had changed.

vtec-shadowwolf

hi there,


i know it's been a long time ago since this question was asked,

but here's the difference..

the H22a4 engine is the 2.2 DOCH VTEC VTI engine put in US and European
(92-96) preludes, where the H22Z1 is an 2.2 DOCH VTI-S or R engine put in some (97-01) Australian models.. in Europe we have the H22a7 instead (which comes in the Accord type-R, and put out 212/220hp) and the
H22a5 red top (Prelude type-S, which puts out 200/220hp)

so the H22A4 put about 185/200 HP, where the H22Z1 puts out 200/220 HP.

i don't really know what the exact technical diffenrences are, but the main diffence is the origin of you're Prelude.

typemismatch

http://en.wikipedia.org/wiki/Honda_H_engine#H22

Dingeroo

Yeh, again, a long time since anyone posted on this question, but thought it deserved further clarification, myself being an Ozzie and owning a VTi-R (BB6 Frame) 2.2L 1999 Prelude here in Australia.

Vtec-shadowwolf's answer is the closest to being correct regarding the H22Z1 engine. It certainly was the factory standard engine which came with the racier 'R' Type (VTi-R) only ever exported to Australia. It was definitely not any kind of a replacement engine or such nonsense, as has been suggested by some. It was Prelude's topline engine, equivalent to the 'S' Type driven in Japan.

The H22Z1 engine is only found in the Australian delivered models from 1999 - 2001 and is identical to the H22A4, except for hp. The H22A4 is found in earlier models delivered to Canada, US and Australia. I think in the 1997-98 SH models.

The H22Z1 had a red valve cover and the H22A4 had a black valve cover. The performance differences between the less powerful H22A4 and the more powerful H22Z1 are as follows:-

Max power: 197hp compared to 220 hp
Redline: 7200 compared to 7600 rpm
Rev Cut: 7400 compared to 8000 rpm

It was only ever fitted to the top of the line, fully optioned ATTS model; all have black leather trim, sunroof, 5 spoked mags, 5 speed manual - (best manual box I have ever driven) and chasis is some millimetres lower, (factory standard), than the same year models in the 4 speed auto's and the earlier manuals.

A truly magic car to drive and the quickest of all of the Preludes ever made. Superb handling with the ATTS and a few other suspension differences. If you have one keep it forever - will become a classic - are not all that many around.

andoxviii

iTrader: (1)

I have a factory-installed H22Z1 here in Canada in my 2001 Prelude SE

It came with a "PDE HF-1" stamped head, "H22Z1" stamped block, and a BLACK valve cover.

typemismatch

There was some speculation about the Z1 block.

1) Replacement motors that were cast for warranty work
2) Intended for shipment to specific locales, like Australia

The speculation is that towards the end of year production, they ran out of A or A4 stamped blocks and just grabbed the Z1 stamped blocks and stuffed them into brand new cars or shipped them to different locales.

The HP differences are going to be in the head and ECU configuration, the blocks themselves are generally going to be the same.

Dingeroo

Just a little P.S. - The rev cut is necessary because the ATTS has an hp/torque limit, so you can't blow it up! LOL!

andoxviii

iTrader: (1)

These are my thoughts exactly.

I am reading that the PDE head is the Euro-R/Type-S though. Can anyone confirm this?

typemismatch

Wouldn't the Type-S head be stamped P5P, like the pistons, and I think the ECU?

andoxviii

iTrader: (1)

Maybe....I'm new to the H22 and H23. I was more of a D-series and B-series guy until a couple months ago when I bought the Prelude.

Check out this thread:
https://honda-tech.com/forums/honda-prelude-4/euro-r-pde-vs-stock-p13-cylinder-head-comparison-pics-1995637/

typemismatch

I noticed that the head comparison was Euro-R vs JDM, not Type-S. There are like 4 or 5 real variants of the H22 across OBD1-OBD2 and JDM vs the rest of the world. You're right about the PDE-1 is probably be Euro-R. It was the HF-1 that threw me off. Which means the Canadian one gets a better flowing head from the factory.

Makes me wonder what the CR of the Canadian Z1 block is, probably the same as the Euro-R. It's probably just shy of being a full blown Type-S motor.

andoxviii

iTrader: (1)

I'm thinking it could be, too.

A couple of my friends have said that my Prelude seems to be faster than other Preludes they have driven. I only have basic bolt-ons, and I have a stock OBD2B ecu, untuned, so...

I'd love to go to the dyno and get this Prelude tuned. I have an OBD1 PR4 chipped ecu with VTEC components added inside. It's in my 2000 Civic, currently. I'm thinking of buying a stock OBD2B D16Y8 ECU to run my Civic's D15B, then selling the Civic.

I won't run into any immobilizer issues with my Prelude if I remove the OBD2B ecu, right?

If not, I will get this tuned and update this thread for everyone's knowledge.

typemismatch

I don't think so, I think the immobilizer stuff is in the ECU, otherwise people wouldn't be able to use the OBD1 conversion harness and mod their 5g and there would be a lot more conversation around it.

If you have ATTS you will lose it though.

andoxviii

iTrader: (1)

Good point

I have an SE (which I believe is just a base Prelude with a couple other features added like perforated leather, etc.) not a Type-SH, so I think I should be okay.

Dingeroo

Andoxviii - I have no clue as to what blocks went where, whether the manufacture of the Z1 blocks was originally intended for warranty engines or if that is nothing more than speculative rumour. But that is all a bit irrelevant, as typemismatch says, it is all in the configuration and I can say that the Z1 in Australia with the specs that I've posted above, was only ever teemed with VTi-R model here and that the 'R' model was only ever exported to Australia with those specs. We also have here a VTi-R model in the Integra as well, which is also high performing.

I believe, that to establish which 'Type' model you have the eighth digit in your Vin No. gives the clue, e.g. for the 'SH' Type, that digit is a 5, whereby for the base model it is a 4, I think. You could ring Honda and give them that number and see what they say. You are sure it is the original motor?

If it is equivalent to the "S" or "R" type motor, then it must have been a special factory order, which could have been arranged through the local dealer when purchased as new, I guess. Do you know the history of the car?