This 4-2-1 header could actually be moved about a 1/2" closer to the block so install interferences are slowly being taken care of. We'll have to get a report from Corey races this weekend. I haven't talked with him but I heard he broke an axle on the last lap in Sunday's race while in the lead. That Sucks.


"Pictures Deleted"




Modified by SMSP at 11:05 AM 8/3/2003

 

Corey has an H22A4 in his 4th gen?

 

i was thinking the EXACT same thing when i saw that.......whats up with that?

 

I believe the first engine burnt a valve.

 

Thats an understatement!! all exhaust valves were pretty toasted.. No compression sucks.. The H22A4 is running on a OBD1 system, so its all good =~)

About the honda-challenge races this weekend, the car was awesome!! Power is unbelieveable! I was in first place for about half of the race on Saturday, and going into Turn 5 (T5) there was a caution flag for a civic that broke a wheel off, well, I got passed under yellow by an Integra, and it wasn't caught by any of the corner workers.. I caught back up to him, then we had a full course yellow, and on the restart, he kicked my ***, I feel asleep.. I got held up by a yellow CRX for a lap, while the integra pulled away (I had words with that guy later).. Was catching him, but couldn't do it by the time the race was over, 2 more laps and I could have had him...

On Sunday, I qualified 2nd, so was on the front row of the race, starting by Jack in his B18c5 Civic Hatch.. Standing start, and we were side by side on the straight and into T1.. That is some HP for a 2600lb car to keep up with a 2300-2400lb car with 185HP.. Had a long fight with an ITR the whole race and on the last lap, my axle took a crap! New axles, by a respected business, needless to say, they are getting a phonecall.. I finished 2nd still in that race.. so all was well I guess, but would rather have 2 firsts though...

Once again, the car proved to be a rocket in the straights! Pulled on all the integra's with ease! (except when in my draft) .. I remember at the 1st race at CMP, Warren ****'s car and mine was dead even on the straights, but yesterday, comming down the front straight, I had enough power to come all the way around him and in front goint into T1!! He said he didn't left.. So, this 4-2-1 must make more HP than the 4-1..

 

Any idea when these are going to be commercially available yet?

 

Well, I could replace my axle, and go to a dyno this week.... Thursday maybe...?

 

Were they oem style axles, or billet?

Looks great!

 

no doubt, if they are around $400 I could get rid of 3 RIGHT now!!! Keep us posted on when we can get one of these badass NA headers..

 

they will be much more than that price. youre gonna be looking at hytech, mugen type prices..

 

$400, lol... Even double that would be a deal.

 

OEM style, lost fluid on Sat, broke on Sunday... Replacing for free..

 

How many man hours did it take the make that header?

 

hahahaha... I can't even answer that, All I know is Dave spent a lot of late nights up, and mornings designing it... And tons of exchanges from him and I with pictures/measurments, and phone calls....

 

There's no way to even come close to breaking even on a first header, if you add up all the time spent on drawings, measurements and the fact that it would be crazy to build a jig for a piece you're not even sure it will work. Therefore, no jig for this last one

To give some of you guys an idea of just what the 2-1 merge collectors cost take a look at these prices from a leading header building company. To read these the first line is the tubing size going into the collector, then part number, then mild steel price, 304 stainless price and finally 321 stainless price. These are prices just for (1) collector. The 4-2-1 that I built for Corey uses (3) 2-1 collectors. Although formed collectors were used for his header. The header should perform better with merge collectors.

2-into-1 Base Collectors

Primary OD
Part Number
Mild Steel
304 SS
321 SS

1 1/4
MC2-125
$86
$103
$129

1 3/8
MC2-138
$86
$103
$129

1 1/2
MC2-150
$86
$103
$129

1 5/8
MC2-163
$92
$108
$135

1 3/4
MC2-175
$92
$114
$141

1 7/8
MC2-188
$97
$119
$146

2
MC2-200
$97
$124
$151

2 1/8
MC2-213
$103
$129
$157

2 1/4
MC2-225
$108
$135
$162

2 3/8
MC2-238
$129
$157
$184

2 1/2
MC2-250
$129
$157
$184

 

Keep us posted. I can't wait to see the dyno!

 

wholy crap, I had no clue it was THAT expensive for a 2.5" collector!

 

Yeh, just wait til you get your bill for 2 prototype headers.

 

Guys, mind chipping in on this one

 

Any ideas on if this is going to fit a 5th gen? I am interested in a better header for my SCCA Improved Touring Prelude.

 

No problem if I can drive your car at Summit Point

 

I believe the engine mount is the same up front and it shouldn't have a problem clearing the A/C and P/S stuff. It will not bolt up to a stock exhaust system.

 

i'm gonna pay what ever it takes to get this header (not my wife and kid those)

 

hmmm, the DC 4-2-1 seems to have better ground clearance.

 

Yep, that's because the size of the tubing DC uses for the secondaries is the same as what I'm using on the primaries. But, Corey thought the secondaries could be moved closer to the oil pan.