Mopar_Man

That thing sure looks good. I would love to see it under my hood. But ya 900-1000 is a bit on the spendy side.

XLR8R

I wouldn't characterize that as a "long-tube" header, but it does look a bit longer than the minimum 10-12" tube length necessary to avoid inter-cylinder exhaust contamination.

Besides decreasing the flow resistance (sharp 90* = feet of straight pipe), the tubes preserve the individual exhaust pulses from each combustion event... and no, I'm not referring to pulse tuning for cylinder scavenging purposes (although that does comes into play during light throttle conditions when the engine is essentially operating NA).
Rather, the turbine extracts more energy from pulse waves than from static pressure... I believe that's partially why different blade count turbines work better than others.

Of course, heavy-wall construction and black ceramic coating should be de rigueur for a piece like that.

Mike Holmen

Looking at the picture is doesn't look like the tubes are at equal length. The only benefit that I see is the exhaust tubing is slightly larger than the ATS manifold that we all use. I like the idea of putting in an external wastegate on the manifold, will make it easier for people like me to build better twins packages. But for $1k, that pretty pricey stuff and I can buy two ATS manifold for the same price.

mcoleman

Wonder how the longevity will be? My experience with stainless steel headers aka: Buick turbo cars and Jeep 4.0 engines isn't very good as far as I'm concerned.

2500CTD

No experience with Buicks, but are the stock headers stainless on the jeeps? We have a 91 and no issues, but have seen a bunch cracked in the junkyards. Also our Firebolt has stainless exhaust and no issues with those cracking either. Granted that is an aircooled V twin.

1-5-3-6-2-4

whats wrong with greg houge?

Diesel Doc

I would like to see a port to port egt and drive pressure reading compared to stock or aftermarket log type manifold. I would bet #6 and #1 port on the 12 and 24 vlv engines run alot cooler.

Troutstrannysvc

I've done business with Greg, and I spoke with him on the phone many times.
Though our first conversation and my first experience with his products was not that great he did everything he could to get me straightened away.

The nice thing about Greg is the custom grinds you can get.

Anyways, if you do some surfing around other forums you'll find a large post concerning the SS headers, and I'm pretty positive the designer of this one is over there..

rollerink

Anyone have an pictures of there truck with these tubular manifolds?

DIESELDENT

found this one, couldnt find a picture of the other one but i think i remember one of the trucks from the most recent Diesel Power challenge had one.

Mopar_Man

That looks SICK!!!

BigDiesel396

Thats the same Idea of the one I plan to make as well ^^^

BigDiesel396

BTW, in an "equal length" header you are looking for equal volumes through each tube with pulses ultimately divided 3-3 at the collector/turbo flange.

Bends in pipe affect liquids more than gases, so the one 90deg=4' straight is kind of a crock when it come to this situation.

dvst8r

Passengers look quite different? http://www.passengerdiesel.com/

Mopar_Man

So ware is the information on this header? Price, ware to buy, ect...any info?