No OBX stuff here.... My buddy made it and if we can get a good enough interest he may mass produce these. Anyone interested?

 

MIG welded?

 

thats a nice manifold!

 

Nothing wrong with MIG.. it's a hell of a lot faster.

 

Yes, but there is no where near the penetration.

 

Tig is a lot stronger. I wouldn't trust mig on a manifold. Let us know how it holds up.

 

There is absolutly nothing wrong with the proccess of MIG welding an exhaust manifold together. There is a big problem with make a turbo manifold with mild steel though

 

There is absolutely nothing wrong with a mild steel manifold.


-S-

 

Looks pretty darn good, what is the runner length, and can you show it to us on a motor? Thanks, Carl

 

Carl, you have the ugliest FC ever!!!!








jk

 

looks fine to me, but then again, i'm not as experienced with fabrication as others. please let us know how it holds up once it goes into use.

 

not too bad. can i have it? hell, i'll even trade my hks mani for it. lol

 

time to invest in a tig

 

how much and im interested in one for a fc . He offer any warranty?

How thick is that flange? It seems pretty thin for a exhaust mani.

-Ben

 

TIG is superior on SS.


-Ted

 

Damn there is too much misinformation on this thread. Can someone chime in with more accurate claims about which is best for what? I mean we have a person say mild steel is no good then another person says it is. Then we're going back and forward about the tig and mig welding. The info that may be useful here is too confusing guys.

Edit: Since we're on the subject about welding, what about the usefulness of arc welding?

 

When I get the motor back in the car I'll have to snap pics. The placement of the turbo is low and past the strut tower area. The turbo I'm running is a bit bigger then my old one so the placement of it has to be a lil more forward.

This particular manifold will run about $500 + shipping. That's what he quoted me atleast. The flange is actually pretty thick. It's thicker then the Racing Beat one. He gets these custom made.

 

Agreed. I like to hear their opinion and some sort of facts or experiences to back it too. When my buddy asked me what kind of metal I wanted to use my answer was "Whatever will hold up the best to all the heat a rotary produces." I trust his judgement.

 

Is it inconel then? Cuz that would hold up the best for sure. 321SS would be next best.

What is it made of, then? Looks like theres some surface rust on there so I'm guessing mild. Mild won't last for an extended time unless it is VERY thick, in which case, you would need a hardcore MIG welder to get the penetration needed, that a TIG could give. TIG is also a much cleaner process leaving you with less impurities in the weld, and when there is that much heat going through the manifold, you want it as strong as you can get it. I'm sure it will work fine, but 'm just concerned as to how long it would hold up. Heck, I even built myself some mild steel headers and MIG'ed em, but its only a temporary thing till I put the turbo on.

 

Mild steel is fine it will hold up just fine. It doesn't have the expansion rate stainless has giving it much less chance to crack if welded poorly. I'm not sure where you guys are getting mild is not good enough, unless your thinking thinwall tubing. 321 over 304 is not worth the money both are almost equal in their ability for heat at around 1600 degress. And if welded properly 304 will be fine. Unless it's for bragging rights. The benifits you get with a stainless manifold are lighter weight, and it wont corrode as easily, especially after heat cycling. Saying a manifold wont hold up because it's mild steel is just wrong. They usually will outlast the poorly welded stainless ones.

With the right weldor, mig welding is plenty strong but not ideal. Welding it up with a little buzz box is not going to work too well. The biggest problem with mig over tig is it starts the weld cold. That is usually where you will have penetration issues(there are ways around that) The other issues are the gun is more of pain to get in small spots also blocking your view, and you do not have a precise control over heat. It's kind like a hose you squirt and go. With all that said tig is a superior form of welding allowing you to control heat better, but it doesn't guarantee it produces stronger welds.

-S-

 

WHO cares how its put together as long as it works, boy some of the things that go round on these forums!! like she said! JUST DO IT!

 

100% agreement here with Zero R,

in the hands of an experienced welder mig, tig, or stick welding makes almost 0% difference. its just that for certain alloys certain welding process are easier to get a good weld. If the welder knows what he is doing he can work around the other problems. Too cold of a start = preheat the part in a blast furnace first..... impurities in the weld? weld it in a sealed chamber flooded with argon or co2 argon mix.

so many of you dipshits spout **** you have no clue about. the only advantage to SS over mild steel is the weight and how thin you can make the runners in comparison to mild steel.

mild steel is less apt to crack over stainless in almost all applications. the primary reaosn SS is used is that you can make thinner walls while still handling the heat in a highperformance engine and therefore it ends up weighing less.

it also allows them to charge all of you brainless wonders more for there products because they have you properly trained to spout stupid **** off which you only have a passing internet knowledge about.

kenn

 

It's hard to get into detailed discussions on it, since it takes volumes just to cover all those welding techniques.

Mild steel is fine, but don't expect it to last forever.
SS is chosen due to the fact that it can handle more heat longer versus mild steel.
If everything is kept constant, the SS unit will outlast the MS unit.
The problem with MS is that it'll sag (versus SS) when subjected to constant, high heat.
This is one of the biggest problems when you let a 30 lbs.+ turbo sit on a very hot mild steel turbo exhaust manifold, with no extra bracing.
The mild steel unit will eventually sag and warp.

For an experienced weldor, all the different techniques doesn't matter - we're talking full certifications for all the different types.
Stick welds are hardest to get consistent, but a weldor who is certified in stick (i.e. arc) will do a perfect job, no problem.

So which one of you knows the difference between "welder" and "weldor"?


-Ted

 

Welder is the machine\deivce used

Weldor is the person doing the welding

Do I get a cookie?

 

See now where getting somewhere. Thx for the elaborations guys. I have a stick welder at my shop. I wanted to start experimenting with it. I wasn't sure if I could use it for thin custom exhaust material since the sticks are so thick.

Quick question I have a 1/2 stainless flange for my 20b, is stainless the only metal I can weld to it? What would happen if I used mild steel for my runners when my flange is stainless? If they are incompatible, I may be selling that bitch.