Need help on wich Tubular manifold i can use on my car??

[qwklil4]

I wasnt saying non stainless is crap, just the crap stuff isnt stainless.

 

[BrokenTsi]

SS doesnt fatigue as much from heat as mild steel does. It also doesnt expand as much as mild steel. Mild steel expands almost twice as much as SS under high heat conditions. Doesnt mean mild steel manifold wont hold up but.. Also heat wrap wil trap in more heat, also causing the metal to fatigue MORE, and may lead to cracking.

 

[Stapl3]

I have yet to see a schedule 40 or thicker steel manifold fail. That shit's thick.

The expansion rate is no problem so long as the entire thing is made of the same material. I think it was ssautochrome using raw steel flanges and stainless piping. That's a crack disaster waiting to happen.

Say what you want about it not being stainless, but it looks hardcore as hell and has been proven to work amazingly time and time again.

 

[qwklil4]

Yes that is the issue with all the ssautocrap stuff i believe, that and the runners are like 1.3 mm or something? WTF

 

[Stapl3]

Picture's worth a thousand words.

 

[leet]

Go see leet. Yes, the spelling is not pefect sometimes but i've seen worse.

I'm poor, he can make me brownies.

Stapl3, that's awfully thin.

 

[qwklil4]

Yup thats the picture i was thinking of...damn

 

[JDMFirstGen]

Yum... I could use a tasty confection right about now.

I must have been thinking cake, its fixed.

 

[suicidal2af]

Jump in there with it. Bring a Corky Bell book with you. Maybe you could learn some turbocharger fundamentals.

I would, but unfortunately, I left it in my car.

Heat does not spool a turbo. High velocity gas impacting the turbine spools the turbo. That said, with a constant volume of exhaust molecules, and a constant turbine housing size, higher temperature will create more velocity, which will spool a turbo faster.

However, if you blow 100mph of freezing air at a pinwheel or 100mph of 200* air at a pinwheel, it will spin at the exact same rate.

However, following your turbocharger fundamentals logic, why bother with a turbine at all? By your logic, its only function is to bottleneck the release of exhaust gasses from the engine, since heat is what spools the turbo.

Go learn some basic highschool physics then come back.

EDIT: For that matter, if heat is responsible for spooling a turbo, how would the A/R of a turbine housing affect spool at all? It doesn't change how much heat is contained -- it only affects the velocity of the exhaust gas.

 

[Stapl3]

Heat does not spool a turbo. High velocity gas impacting the turbine spools the turbo.

Go read the book again. To say heat does not spool a turbo is simply wrong.


"Heat and airflow drive the turbine"

-Corky Bell

 

[definitiveno]

Go read the book again. To say heat does not spool a turbo is simply wrong.


"Heat and airflow drive the turbine"

-Corky Bell

Now your just being a jerk. Thats what every one has been trying to explain to you.........


Previously in this thread......

"heat drives the turbine"
-Stapl3

 

[Stapl3]

And it does. What's wrong with that statement?

 

[definitiveno]

And it does. What's wrong with that statement?

It's missing some thing..... Airflow!!!!

 

[Stapl3]

Heat is the energy that powers the turbo. Most the energy in exhaust is heat. This is stated many times in Bell's book.

This is why remote turbo kits are laughed at; because they're so far away from the heat source.

 

[definitiveno]

Heat is the energy that powers the turbo. Most the energy in exhaust is heat. This is stated many times in Bell's book.

This is why remote turbo kits are laughed at; because they're so far away from the heat source.

It's a system of heat and air, I don't know why your trying to seperate the two components. If all you had was air you could affect a turbine wheel, if all you had was heat there would be no air molecules to absorb, expand, and power the turbine. It's a combination of the two.

 

[DSMJim]

WOW, look at all the BS flying around in this thread, so much my head hurts.

First, Heat is the primary force that drives the turbine in your exhaust system, thats a proven fact of physics and is not debateable so let it go. The turbo is driven by heat from the expanding gasses that exit the engine's Exhaust Manifold which accelerates the turbine causing it to spin the compressor wheel. Flow does have a function but the primary function is heat from the expanding gasses creating pressure meaning HEAT is the primary component. DO NOT ARGUE THIS, it's not debatable. This is like trying to argue the world is flat, it's not and we have proof.

Second, Stainless Steel if the proper thickness, quality (T316 or T321 type of thing) is just fine with no wrap. Schedule 40 or 1010 Mild steel is perfect for a manifold and has less chances of cracking than SS does. It's so flexable that it will move and not crack, SS is strong but brittle and eventually will crack with enough load. A well designed SS manifold will distribute the weight well and not crack (ie: DNP, Magnus, Victory etc..)

Please guys, lets follow this rule: "Don't try to help if you don't know the answer - bad advice can be worse than no advice (no "I think" or "I guess" or "I've heard"). " or I'll Punch.

 

[definitiveno]

Primary, not soul. Thats the only "arguement" being made.