Hey everyone, well, i took a few pictures, thought I would share my Manifold.

It is a custom Manifold made by RevHard for me. :-)

Check it out... I love those welds... just how i like it...mmmm

well, im having it port and polished this weekend so hopefully I can start putting together the powerplant. Im still not sure, may have it polished...or coated, we'll see... either way :-) im happy !!








Check those guys out at RevHard.com Tite Sh*t

 

Stainless? Any reason you decided not to get it done equal length (since you went through the trouble of getting it custom made)?

 

Rev Hard will be making one later on for me... I needed this manifold like... yesterday so the equal length couldn't be made in time, that will take some more engineering, either way i was recommended not to go equal length as of yet.


:-)

 

not stainless.... that stuff is known to crack.

 

I don't think equal length is as necessary on a turbo car, especially our twin-scroll. The longer the runner, the more chance for the exhaust gas to use up its precious energy through expansion and heat-loss through the manifold. Just get the exhaust to the turbo as fast and as hot as possible and don't worry so much about the extra bit of power you may get from the scavenging effect.

See this article on Vishnu's website:

http://www.vishnutuning.com/exhaust101.htm

EDIT: Just noticed this is not a twin-scroll manifold. Above comments should still apply though.

 

heheh you're right... no more twin scroll... but i will leave that for another post.. :-) Ehehehehehe

 

equal length has a big impact on turbo and non turbo cars....with these manifolds though, they are so short, that it has little impact.

As for the design, looks pretty good...definately looks purposeful! Stainless is just fine...just needs to be made correctly and it won't crack

 

You should get it Jet Hot coated. Nice finish and blocks heat!

 

Man that is the worst looking manifold I've seen to date. Sorry to slam but Dammmmm.

 

inconel?

 

Actually that is a very well made manifold, I think the finish of it is bothering you. Ceramic coat it and it will put a stainless manifold to shame. Yes the runners are not equal length but the design is superior to the stock log setup in terms of flow and thermal hot spotting.

No its not Inconel, that manifold is made from forged steel weld bends. Far superior to stainless steel on a turbo manifold application. It will never crack or break. Its thermal expansion is very minimal and compared to stainless that has high thermal expansion charecteristics.........10 times more than stainless steel...........not good when it heats up to 1500f the cools down daily...... several times a day while supporting a 20+lb turbo
On the subject of inconel, forged steel is the superior turbo mani setup, well next to the inconel. Inconel usually looks shiny kind of like chrome. That manifold in inconel would cost in upwards of 2 grand.

All in all it looks like a fairly decent setup
I just would have placed the external wastegate pipe dead center in the middle. Also nice fuse Tig welding. But that stuff aint so difficult to weld up, not like stainless or inconel

 

get the dyno results

 

It prbably will not give him anything substantial (10hp maybe)
However he should get better responsiveness

 

I disagree that steel is superior to stainless. Plus it weights a ton.

 

Please expound upon your theory
Stainless has the bling factor, I will give it that but its thermal charecteristics are not the greatest. It is more likely to crack over time. Now compared to mild steel, I agree with you its superior because of its corrosion resistance. Or for that matter Stainless is better than any steel EXCEPT......for FORGED STEEL.
Like I stated above nothing comes close to it except for inconel.

I build manifolds for a living and have had experience with carbon, forged, SS, cast iron bends and various high temp alloys including inconel. So I get to see what works over time.

Stainless just flexes and bends, for a strip warrior that will not see more than 100 hours on a manifold I would opt for stainless because it is light weight, however on a street vehicle I would not take that route. Yes steel is heavier, actually about 2 times heavier however I would want a stout piece of equipment when it comes to a turbo manifold. A turbo manifolds duties are not easy. Brace a heavy turbo and live in some of the most extreme environments.

I dont mean to flame you here just stating what I know