This is one of my unusual ventures out of the ITR forum, I searche under key words h22,type s,jdm prelude. and came up with nothing that I was looking for.


I'm inquiring information about the prelude type s, were planning on putting this motor into a (ek)want to know where the 20hp and the near 2 grand increase in the price I know that it comes with a lsd and such. Ive also heard that this motor was built at the same shop that the the type R line of motors was built at. so if someone can break down the type s motor compared to a usdm h22 out of a type sh.

i'm a typo *****

 

Here goes. (Type-S 5th Gen)

Type-S pistons raising cr to 11:1
Type-S cams higher lift longer duration
modified valve angles
Type-R port and polish on head
Red cam cover
Single intake manifold with finer casting and better flow
Larger diameter throttle body
Dynamic chambers intake pipe and air box
S/Steel exhaust header with true round (not oval) down pipes
Improved B pipe collector
Higher volume exhaust silencer
Modified ECU
ATTS gearbox

All above 220ps 7200rpm

There is an Sir S-Spec 5th gen with same engine but no ATTS but has LSD gearbox
instead

 

The Prelude TypeS was only available with the ATTS system, not a LSD. There was also a very rare model sold as the "Prelude SiR S-Spec" in the later years of the 5th gen Prelude in Japan. It has the 217hp rated motor like the TypeS, but the tranny has a traditional LSD as opposed to the ATTS system.

Compared to a "regular" H22A, the 217hp rated TypeS and S-spec motors have a different head design with a mild hand port and polishing similar to the ITR, different cams, different ECU maps, higher compression pistons and a slightly different header among other things.

One big problem is how to identify a TypeS or Sspec motor from a "regular" H22A. They both have the same "H22A" block stamp. The 217hp versions have a red valve cover, but an unscrupulous engine importer could easily swap on a red valve cover and then sell the "S" motor for $2000 more...

See also:
http://asia.vtec.net/beystock/honda/preludes/
courtesy of good old VTEC.net

Andrew


[Modified by aklucsarits, 12:37 PM 10/3/2002]

 

the accord euro r h22 has the single intake manifold, the type s h22 still has secondaries.

 

Nope, the Type-S has a Single Stage intake Manifold
As do the euro-R accord's


[Modified by Cottonwoodz, 4:19 PM 10/4/2002]

 

i must have been mistaken then when i saw this upper prelude manifold for the type s:

http://www.fizzautosports.com/jdm/jd...elude_oem.html

i always thought singe stage intake manifolds were a one piece unit, but i guess you learn something new everyday...good thing theres H-T!

 

areyouasian was correct to begin with. The Prelude Type S has the same 2 stage, dual plenum intake manifold the regular H22a has. Most articles that I've seen suggest that the TypeS manifold undergoes some port-matching and/or honing process to make it flow better than the "regular" dual stage manifold. If you follow the link that I posted previously, there is an article translated from the old homepage of the Japan market Prelude TypeS on Honda.co.jp. The translation includes several diagrams from the site, including this one which clearly shows that the Prelude TypeS has a dual intake plenum:


And if that's not enough proof for you, you can go to this current page on the Honda Prelude TypeS site, the first link will show you the same dual plenum intake diagram:
http://www.honda.co.jp/PRELUDE/2000/...t/s_power.html

I'm also 90% sure that the Japan-only "Accord Euro-R" with the 220ps H22A also has the same dual plenum intake manifold. The Europe-only "Accord Type R" H22a is the one that has a single runner intake manifold. Many people seem to get these two Accords confused despite the fact that they are completely different cars.

Andrew

 

hey, thanks for confirming what i previously thought but i know that the accord euro r is the one with the single runner intake manifold, my cousin has a euro r h22 sitting in his garage waiting to be swapped in and it has the single runner intake manifold on it. plus if you look at the specs for the two motors, they make the same amount of power but at a different powerband, which would lead me to believe that the difference in intake manifolds is the cause of the different power distribution since both motors have the same specs.

 

OK, I was talking about butterfly valve,which the Type-S does not have.(single stage,no butterfly)

 

The type-s Does have butterfly's and is dual stage and the Accord-Type-R and Euro-R in Japan has the single Runner. I have swapped both motors and have inspected both of them. I have also seen a Brand new Type-s Manifold. The runners are really smooth. Alot better casting. The customer bought the manifold about 3 years ago and thought that the type-s manifold would be better then the Regular H22a Manifold. It was pretty expensive to for just smoother casting!

 

So the Type-S has the butterflys, umm. I always thought it didnt . Thanks for clearing that up.

 

No Probs! Cheers

 

that seems like an awful heavy engine to put into an EK...

 

What kind of gains do you think you would get w/the Type S intake manifold..its on that site posted above for pretty cheap..heres the link again http://www.fizzautosports.com/jdm/jd...elude_oem.html

D
97SH


[Modified by dsludefosho, 11:41 PM 10/7/2002]

 

Good replies and good info. I am glad everyone is on board.. Now whether the S-spec lude engine is for you at today's prices that all depends on what you are playing to do.. I would sugges to anyone just get a normal h22a and then upgrade the internals if you so please, which could put you with even higher hp numbers..

At the prices I see them going for now adays its not really worth it in my own oppinion..

 

Thanks, good info.

So now that we know that the EuroR and TypeR Accords both have single runner intake manifolds. Do they use the exact same single runner manifold? Or are there differences in the manifold designs?

Andrew

 

my $0.02 :


along the lines of unscrupluse importers, ive seen several "type-s" motors sold with what looks to be the EXACT same exhaust manifold, oval, lumpy bends rustly like our cast iron (or is it steel?) uglies. ive spoken with peolpe who have had a 5th gen typeS swap and when looking at thier usdm and jdm exh. manifolds side by side they couldnt tell the difference. anyone actualy have a jdm typeS header any differnece?

sorry but must thread *****: HELP ME OUT WITH THE PLUG READING POST!!!

 

Dont think there is any way to tell from just the primaries and downpipe. I do know that the actual car had a bigger exhaust diameter, but again no way to really tell from the headers by themselves..