Stainless Header

[JWestley]

Deffintley something different. I am interested to see how well it really works before buying one. Keep up the good work

 

[Vaughn MacKenzie]

Updates > ?

 

[REFLOYD]

where are they????????????????????

 

[MDW]

Being tested

 

[BTowler]

Any word yet?

 

[MarshallB]

i dont think its going to happen. whats the word guys yes or no???

 

[Joe Mc]

Stainless steel typically has a rather low carbon content, in the range of . 08% to . 15%, and sometimes as low as . 03%. The carbon is needed for hardness, but it also can cause the stainless to become susceptible to corrosion at high temperatures. What happens is this: when chromium-nickel steel is heated to a temperature range of 800° to 1590°F, the carbon in the steel combines with chromium to form chromium carbides. This transformation is called carbide precipitation and reduces the corrosion resistance of the steel. The chromium is reduced in this heat-affected area and makes the steel subject to what is known as intergranular corrosion. Some stainless steels are known as low carbon grades to minimize this carbide precipitation; others, such as 321, are special alloys that reduce carbide precipitation by combining and stabilizing the chromium at elevated temperatures



there are companies that coat headers with a thermal barrier, typically some type of ceramic formula, in order to keep the heat inside the exhaust system. Stainless steel performs this function without the need for add-ons because it has a much lower coefficient of thermal conductivity, thereby keeping more heat inside and transmitting it to the header outlet. Radiated heat is perhaps the most important reason to wrap or ceramic coat the headers to protect the car and the driver from excessive, fatiguing high temperatures.



you could still coat the inside of the header and further improve this.

Very well communicated/explained!



No pun intended - just wondering, Metalurgical Engineer? My Father-In-Law was for USS-Fairless, PA works then retired and moved on to Wheeling Pitt, consulting for many years and retired again about 10 years back. Still alive and doing well @ 77, play senior doubles tennis and golfs every chance he gets - we should all be so fortunate. Your presentation and explainations sounds like someone with his knowledge of metals.

 

[Joe Mc]

all too have steel crown articulated pistons... they can stand much more heat than our aluminum slugs...



and personally, i'd rather toast a $2000 turbo than a $5000-$8000 engine. much less downtime too with a turbo gone bad than an engine gone bad

BINGO! My thoughts exactly.

 

[Joe Mc]

Hmmm. .

I have been watching this thread since it started and yet no one has asked how much air the header will flow over the already proven ATS,High Tech and B-D Power exhaust manifolds. See,this header design goes against all known header design and airflow characteristics and I'd be willing to bet once its strapped on a flow bench its design flaws would show easily. To make a header that flows correctly and follows what is known about exhaust air flow,you would have to relocate our turbos. Any header that is designed with bends following bends will never flow properly and create more turbulance inside costing HP and raising egts.



Another thing inquiring minds would like to know here is cost. See while most would just jump on the bandwagon due to it being different,normal owners would like to know what they stand to gain for their money. They would also like to know what they would gain by buying this as compared to the money spent for the proven other manifolds out there. The old theory "bang for your bucks" is what is needed to be known or simply,tell us what we stand to gain for the added price of this show piece or is it simply nothing more than a show piece for the money?... ... ... . Andy

Very well put Andy - Good Stuff! "America, I LOVE THIS PLACE!" :-laf

 

[smokinrod]

well ?????????????????

 

[Signal73]

the silence speaks volumes... ... ... .....

 

[smokinrod]

my thought exactly

 

[zstroken]

Haisleys has something in the works pricing has yet to be determined. They have made the one for the CR and the 24V. Still working on the 12V. I have pictures somewhere. If I find them I will try to post.

 

[PKozlowski]

As someone said in the movies "I have got to get me one of these!"

Nice work!

 

[smokinrod]

please do , i would love to see them

 

[GHarman]

I am curious. Stainless Steel ( Austenitic alloys) have 1. 5X the thermal expansion of Steel. Steel moves around more than cast iron when heated. What is the advantage of using the material that moves the most in the highest temperature environment? As I remember correctly carbon steel lengethens . 00075"/inch/100* F. This a linear movement; X axis. Stainless Steel moves 1. 5X that of steel. Exhaust temperatures are more than 1000* F. . Your manifold ( If it is an austenetic alloy ) lengthens about . 292" (and expands, Y and Z axis) at operating temperature and then shrinks back to nominal size at ambient temperature. It would seem like one would wear out exhaust manifold gaskets quickly. If I am wrong, let me know. Based on operating temp. of 1000* F from an ambient temperature of 100*F and a manifold length of 26". GregH

 

[blkdragon]

that seems to be a correct statement to me.

 

[Forrest Nearing]

that's correct, that's why people generally don't build stainless turbo headers or manifolds

 

[HoleshotHolset]

that's correct, that's why people generally don't build stainless turbo headers or manifolds

They sure seem to like using stainless on turbo gasser headers/manifolds... Go figure.



Matt

 

[ToolManTimTaylor]

WOW I need a nap after reading that post. My WRX had a stainless Up pipe and downpipe. I pushed the car to 1600* (Which amazes me that the pistons were still intact) too many times to count and never heard any leaks or distortions from expansion. . I do know that steel sheds heat faster than that of cast iron tho. . . does that help any or do I need to go home now?