Here are some pictures of the 5th H22 header. I have to review pricing to see if I can bring this version in at the same price that I quoted for header #4. IF I can, this will be the final version. If not, the collector will finish just prior to the steering rack.

In comparison to header #4, I was able to increase the radius of the 1st bend in the #1 primary, get rid of (2) little bends in tubes #2 and #3 prior to going into the collector and provide more clearance at the cross member.

By adding the offset after the collector, I was able to position the outlet of the header in the center of the car. This point is close to the end of the flex tube on the current stock manifold. If the dimensions supplied by Daemione
(Thanks Man!) are accurate, this offset should clear the ATTS unit on the 5th gen cars and therefore this header should work for all the 4th gen, 5th gen and ATTS equiped Preludes as well as the Hybrids.

By postioning the outlet of the collector in the center of the car adaption of this header to any cat back system should be much easier and cheaper, although I think the best gains will be seen when using my 2-1/2" system versus the small stock system or the many 60mm after market systems now available.

A 2-1/2" cat will bolt up to the header outlet and utilize a donut for the flex joint. Then 2-1/2" tubing can be run straight back to the inlet of the resonator. The inlet tubing can be expanded to accept the 2-1/2" tubing directly, or a taper reducer can be used in conjunction with the 2-1/2" tubing to provide a smooth transition to the smaller tubing of the cat back. But I think you should just run the SMSP 2-1/2" exhaust.

The O2 sensors will be near the stock locations so no changes will be required for that wiring like on the B series headers.








Modified by SMSP at 10:11 AM 10/12/2005

 

Very nice Dave, it looks like the waiting is finally over for all of the H22 owners. I'm just curious - did you ever experiment with a larger collector on the H22 header? I recall that your B20 header ran a 2.75" collector (if I'm not mistaken). The displacement is obviously similar, but was the lower redline that most H22's will see (compared to many built B20's) a factor in the sizing of the collector?

 

Looks very nice. Do you make headers for other engines? :cough: B16A :cough: If so, where can I get more info and/or buy it (in a month or so)?

 

Sweet

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Padawan &raquo;</TD></TR><TR><TD CLASS="quote"> I'm just curious - did you ever experiment with a larger collector on the H22 header? I recall that your B20 header ran a 2.75" collector (if I'm not mistaken). </TD></TR></TABLE>

For stock engines? No

This header can be built in 2/3 versions depending on the mods. I think this header will perform better than most anything else out there on modified engines since the tubes are bigger than most other headers among other things, but a real wild set up or stroke/bore upgrade would require a custom piece, but notching would be required on a Prelude.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SMSP &raquo;</TD></TR><TR><TD CLASS="quote">I think this header will perform better than most anything else out there on modified engines...</TD></TR></TABLE>

Your pieces usually do.

 

Looks very good Dave!

 

so does this mean the price went down

 

Looks nice

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SMSP &raquo;</TD></TR><TR><TD CLASS="quote">If the dimensions supplied by Daemione
(Thanks Man!) are accurate, this offset should clear the ATTS unit on the 5th gen cars and therefore this header should work for all the 4th gen, 5th gen and ATTS equiped Preludes as well as the Hybrids.</TD></TR></TABLE>
Here's hoping I didn't screw up!

Just curious, does the offset collector increase in radius after the merge, or is that an optical illusion?

 

now if we could only get you started on an F series header

 

Sorry to ask a question that has probably already been answered, but how much is this going to cost after you start production? Thanks