Any good sites that have H22 and H23 engine specs?

 

what specs do you want? im sure most people here could provide what youre looking for..

 

-Bore (87mm)
-Stroke (90.7mm)
-Rod Length
-Valve Diameters
-TB Diameter
-Cam Specs, not just lift and duration but if someone has profiled a cam that would be great. Are there any differences in the cam specs over the years?
-Does anyone have a picture of the 97+ engine bay in front of the engine?

Thanks in advance.

 

I know the TB is 60mm..
Intake valves are 35mm
Exhaust are 30mm
Valve lift intake is 8mm on the secondary (low)
11.5mm on the mid (high cam)
6.5mm on the primary (low)
Valve lift exhaust is 7.5mm on the secondary (low)
10.5mm on the mid (high cam)
6.0mm on the primary (low)

I don't believe any of the USDM motor's cams are different.. I have a set of cams if you want to use them with factory exhaust...

Guys, if you could please help him out.. He is hopefully building some kickass header for my lude.. Once he gets a prototype, he may be able to offer it for you guys.. In case you didn't know, his ITR header did really awesome in their header test.. # 1 on top end and midrange..

 

[QUOTEGuys, if you could please help him out.. He is hopefully building some kickass header for my lude.. Once he gets a prototype, he may be able to offer it for you guys.. In case you didn't know, his ITR header did really awesome in their header test.. # 1 on top end and midrange..
[/QUOTE]
Why didn't you say so?
Is this pic good enough?

 

haha, I don't think he wanted pics, I think he wanted specs

It's kinda late and kinda cold outside right now, but it you send me a pm I'll look it up in the Helm's tomorrow. Any idea how much the header will cost? I'd probably be interested by the time they went into production. Hey, if you wanted a 5G for any kinda test fitting or anything I'd be willing to come over in the spring (I'm in WV).


[Modified by Chris93Si, 11:22 PM 1/19/2002]

 

Kinda need a pic of the header, and the clearence between the block and the front subframe... and between the oil pan and the brace that goes from the front subframe, back to the chassis...

 

He did ask for a pic. Do we need a better one? I haven't bought a new header yet.

 

He has seen what my 4th gen looks like.. Needs to see if the 5th gen is much different..

 

I'm looking for a view down the front of the engine, so I can see in between the engine and the radiator/fan, the clearance to the driver's side of #1 tube and passenger side of #4. Thanks guys.

 

So do you need a picture with the heat sheild off? Or just straight down and the clearance at the bottom? If you need pictures from straight down and from underneath I could snap those real quick this evening when I get home. Let me know if I can help.

 

How about this one?

 

just curious...why is it that headers rust so much/fast?

 

It's a DC sports header

 

Heat shield off would be great. Like Corey said I'm interested in the area where the secondaries go between the block and cross member. But also clearance with the radiator/fans, engine/block mount and accessories around the #1 tube.

Can any DC header for the 2.2VTEC engine be used between the 2 generations and still bolt up or are there 2 part numbers? Thanks for all the help guys.

laughin2.2,

Thanks for that one.

styler7,

The DC header in the photo is a stainless steel version but uses a cold rolled steel (probably) flange vs a 304L stainless steel one. Everyone jumps (no offense laughin2.2) over the DC header for rusting but there are two reasons they use cold rolled steel. The most important is because when you weld the tubes to the flange you will get a little warpage due to the heat but it isn't as bad with cold rolled steel versus 304L stainless. The other reason is minor but the cold rolled steel is cheaper. The only draw back to cold rolled steel is if not coated it will rust.

BTW, HiTech used or uses cold rolled steel but has or will be changing to stainless steel. You can check out https://honda-tech.com/zerothread?id=109982, it doesn't seem to bother the owners of the product since I've never read anyone saying anything about it. Plus it doesn't effect performance so it's really not a problem.

I use CNC'd cold rolled steel flanges and mild steel tubing so I get all my headers ceramic coated by Airborn Coatings.


One other thing, I know a guy who builds a lot of NASCAR headers and he also uses cold rolled steel flanges for his stainless steel tube headers.


[Modified by SMSP, 6:37 PM 1/20/2002]

 

i dont believe that a header would work between cross generations. otherwise.. the 5th gen people would be all over the greddy stainless header for the 4th gen. the greddy is what i will be getting most likely for my 4th gen, but youve got me interested in your product! might be a few months before i purchase a header anyway.

 

If anyone could please post pics of a 5th gen, without the heat shield, or aftermarket header, we need detailed pics of everywhere... straight down to the secondaries, underneith the motor, and such..

Also, what is the difference between a header on a 5th gen prelude and a 4th gen VTEC? If it is major, he might have to design 2 totally different headers, if it is a minor difference, then he might be able to get by with one "universal" design..

Thanks guys...


[Modified by Honda318dx, 11:20 PM 1/20/2002]

 

back up....

 

i just did some quick searches on preludeonline to see what i could come up with

http://www.preludeonline.com/showthr...threadid=38468
4th gen vs 5th gen vs 5th gen SH vs 5th gen type-s

per the above thread.. the 4th gen and ANY 5th gen will bolt up.. but the collector length is different. the 5th gen base and SH is different.. but the 5th gen jdm type-s is the same as the usdm SH. so basically its 3 diff headers. =\

http://www.preludeonline.com/showthr...threadid=44108
hi-tech and general header development commentary


[Modified by illusion, 4:19 PM 1/21/2002]


[Modified by illusion, 4:21 PM 1/21/2002]

 

so basically, SMSP, you have any estimated date for a test product?

 

Like to have it ready for his first race which I believe is the 1st or 2nd week of April.

 

i'll come down to va if you need a prelude to help prototype a header for it. email me if interesed and my motor is preety strong also power wise that is.

 

hey.. thats sooner than i expected. i know it must be hard with all this r&d.. but if the price is right id consider buying a header from you too. i have a 4th gen vtec so you wouldnt have to make a new design. but dont take this as im committing to you. ive been looking at a greddy header for a while now and as im told the quality is far superior to dc sports. keep the forum up to date with your progress.. let us know how things are coming along. im interested

 

Pics? Here's an old one of mine.

 

I'm trying now to fill orders within 3 months.

This header will not bolt up to the stock exhaust. It will probably have a 2-1/2" collector and use a donut vs a flex tube like on the ITR. I'm just not crazy about having a bellows in the system, plus the donut/flex joint offers a semi step in the collector/B pipe giving the collector an anti reversion characteristic like the original step ups in the Integra and many other Hondas.

The exhaust system will also be 2-1/2", but Corey's will only have a single resonator and then a turn down or side exit in front of the RR tire. My hopes with this whole system is that the torque curve can be improved and held flatter for a longer period of time.