Hey guys, we all know hytech is supposed to build a prelude header, will it happen, who knows... Here is a header test of a ITR, with SMSP and Hytech header.. This should give you guys a pretty good indication of the potential of the SMS Header that Dave is making for the prelude..

https://honda-tech.com/zerothread?id=132677

Corey - Who can't wait for Dave to start his header!

 

tell him if he wants a trashed H23A head to work with, I have one. lol

 

NO, we need a Thrashed H22a head, and block.. Can't you read son

 

NO DAMNIT!!!!!!! I don't need a header for my H22!!! I need a turbo manifold! Now, if he's gonna do a custom manifold for me... then we'll start talkin'.

 

FI is for p0ssies

 

The GSR made nice gains. By any chance do we have an idea what the price will be?

 

130mph down the backstraight, with air going right to the intake filter

I can't quote Dave on the price.


[Modified by Honda318dx, 1:01 PM 2/20/2002]

 

So the SMSP header is not made of Stainless steel?
Also, how come the price went up on the SMSP stuff? I remembe the price on the B18C header being lower, is this a matter of demand and supply?

Also how is the development of the H22A header coming along?
Does SMSP use antireversion chambers like hytech?

 

I hope to be offering some B series headers in stainless by the summer. A decision to build stainless H series headers will be decided later. These are expensive pieces and if I can offer them for a bit less going the ceramic coated mild steel route I feel the guys are interested in that. There are some manufacturers (both high volume and custom) that use cold rolled steel (CRS) flanges with their stainless headers. This is due to the better stability of CRS during welding plus it costs less. If manufacturers used a stainless flange the price of the header would go up. The only down side to the CRS is that it will rust over time.

As for price I'm not sure what it will be for the H series header. The first header will probably use formed collectors with the design being concentrated towards tube diameters/length and tubing layout (configuration of either a 4-2-1 or 4-1, and pairing of primary tubes for the 4-2-1). It's almost automatic that power will go up once the merge collectors are incorporated so that's something to have in our back pocket.

I'm currently waiting on the UPS man to deliver me a H block to become part of my jig and Corey to drop the car off in about a week but welding probably won't start for 2 weeks.

No I don't use anti reversion chambers in my headers. The header inlet port mismatch, steps in the primaries and slip on collectors all offer a little to help minimize anti reversion. The chambers might help in the lower rpm range (lower exhaust gas velocities) but may not offer enough of a performance advantage to warrant the extra cost of the piece plus the rights to use it since it is now covered under a new patent. I haven't seen any dyno graphs that show 2 identical headers (with the exception of the chamber) that document the advantage. This, of course, doesn't mean there aren't any so if you know of any please post them.

 

Sounds good.....
keep up the good work and I'd be interested to see the results.

Oh yea, is Coreys H22A stock or has it been modified? and if so, would you say mildly modified or heavily modified?

As most ppl probably have moderately modified engines I'm guessing????

 

Bone stock

 

Pretty much Dave.. Due to the honda challenge rules, I can't do much to the motor, which is fine with me, because it will be easy on the checkbook, and the car is fast enough as is..

I will be using a AEM intake
the valve seats can me machined
the exhaust and intake ports can be ported 1" into the head
Can run aftermarket pullies
Lightened flywheel/clutch
Lower FD, pretty much useless on a prelude, so I am not doing it..
And of course can do anything to the exhaust, as long as it exits behind the driver, and that is what Dave is going to work on..

 

Sounds interesting Corey.
Keep us updated

 

What kind of statement is that? You starting to get scared out there?

 

Well, fast enough that if we were able to go deep into the motor with cams and such, I don't think I would have enough BRAKES!! Don't worry Dave, I can handle it give me POWER! I am going to need it now that **** has a leg up on me

 

how much power you guys hope to gain with the header?
I'm hoping it will help me get to the 220whp mark....I hope
The engine is minorly tweaked.

 

Corey did the 2 of you do any side by side pulls or compare times this past weekend?

 

No, we were pretty even though before the header, I am sure he walks on my *** now, the way he raves about it..