I have unused Jet Hot long tube headers still in a box in my garage. Can they be reversed for a turbo setup?

 

nope, i dont even need to look to tell ya ahahha, they would more then likely hit the K-member, then you accessory bracket, then probably run into the rad.

Ive seen a setup done with longtubes on normal with a crossover under it with a T4 turbo mounted under/beside the engine/trans

It was a 94 Black Z28 that was on ebay. Made I think around 550whp

you could flip them upside down cut the hood and the cowl and have it all stick up about 1 foot from the hood, imagine turbo with N/A underhood heat temps!

HAHA jk

Jay

 

No, but you can probably sell them and put a deposit down on a real set of turbo headers.

 

If you sell them I have a set of real quick PT88 header parts for cheap that really need to go

 

I've seen it done - but its a waste of time and money and looks like a pasta monster.. Sell the headers and buy/build manifolds of you want to go turbo. Even in an sts setup you will lose power. So its no win with longtubes.

 

lol, you know I've watched that thread for a while now and even talked to Jon about that setup. I just can't give up my AC.

 

Lol yeah. I'm not having much luck with it. I bought an LS1 car is it's much simpler and less expensive to procharge it

 

I just looked at the STS turbo website. I guess these long tube headers wont be a waste after all.

 

It will work - but it will make less power all things equal than the same setup with stock manifolds. Don't let losing a couple of bucks selling a used set of headers drive a potentially multi-thousand dollar decision on your car.

 

Actually my headers are brand new still in the box. But I figure if I increase displacement of the engine to 383ci....

 

You don't really need to increase displacement with a turbo, just turn a dial and up the boost.

And what he means is you haven't made any expensive decisions on this thing yet. If you're serious about a turbo then just sell the headers and go with a good front mount setup.

 

From the reading that I've been doing it seems that the STS system is just as good as a front mounted system.

 

The bottom line is that the drive mechanism for a turbo is exhaust energy (heat). The farther you put your turbo from the source (engine), the more heat is lost to the surroundings that could otherwise be used to drive the turbine wheel.

-Scott.

 

That's not entirely accurate. The actually drive mechanism is heat differential, therefore cold intake temps are just as important as exhaust heat. Think of it as a ratio.

STS turbo's reintroduce velocity across the turbine wheel through an appropriately sized A/R housing. If the same housing is used as on a front mount, it will most likely boost slower. My STS setup doesn't rely on heat, It boosts the exact same when I first start the engine and it's still cold. (my lag video: http://www.youtube.com/watch?v=rdjh3EY6shU )
The idea of using equal length headers into a turbo has of course been proven by the ricer crowd. But what the OP is asking, I don't think backwards long tubes will fit the car lol. In all reality a few extra feet of tubing isnt going to make a huge difference, But there's no reason to increase tubing volume above a certain level. If you're really worried about it then you can always ceramic coat the exhaust piping which does make a difference. On rear mount systems, headers probably won't make much of a difference since all the exhaust gas pulses get jumbled together anyway.

 

With all due respect, a turbocharger uses 3 types of energy; heat, volume and pressure. Headers dissipate heat to the atmosphere via their thin tubes, vs. a cast iron manifold which holds heat better. JFG turbo heat theory or even turbocharger theory, and don't get lost in the equations.
I'm not certain what reintroducing velocity means, perhaps you meant volumetric efficiency? In its most basic form, the turbo changes the energy states of high heat, high pressure and low volume, into different states of low heat, low pressure and high volume, and uses that energy to spin the turbine wheel.
AFA the effect of headers on rear mount systems, it has been proven that retention of heat will cause the turbo to spin up faster. Keeping cast iron manifolds and wrapping the exhaust from the front all the way to the back has proven the most cost-effective way to do this.
As stated, the main ingredient of turbo sizing of the front mount vs. the rear mount is correct.