[darkplague]

Mods. sorry if this is a re-post

What are the differences between getting a Single exhaust or dual exhaust. I have seens some Z's with a single and just wanted to know which is better

 

[smoothz]

Preference and performance. It all depends on what you are doing to the engine, body kit, etc. I have seen singles on FI applications. I also think it has to do with pricing, weight issues maybe, and style.

 

[Nis350ZTT]

Yeah, I agree with smoothz, it's just personal preference. They all make about the same horsepower, so it's up to you whether you want: y-pipe single tubing, single muffler, single tip; y-pipe, single tubing, one muffler, two tips; dual piping from the cats to one muffler with two tips; dual piping from the cats to two mufflers with one tip per muffler. You can shed some weight by going with a y-pipe, single tubing, single muffler and tip.

You might want to consider going Ti...titanium can dissipate heat alot better than aluminum, plus it weighs less, but it costs more. So I would say y-pipe, single tubing (2.5" mandrel-bent), single muffler, single tip, all titanium.

 

[darkplague]

So performance wise there is not a differnece between going single or dual. I would think the flow would be better with a true-dual exhaust. Less restrictive. Just straight back with the exhaust from each turbine on a TT setup

 

[Nis350ZTT]

[/quote]
There isn't a performance difference, nah. Now, a TT setup, you'll want to use larger tubing and not titanium, because you don't want heat to dissipate, heat helps the turbo's spool faster.

 

[darkplague]

[/quote]
because you don't want heat to dissipate, heat helps the turbo's spool faster.
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hmm. Now that I did not know. So what would u recommend for exhaust when going TT setup.

So trying to make everything under the hood cooler is no good when going turbo. Man I though the cooler the better. Though thats why people get their exhaust mani and turbines jet coated

 

[Nis350ZTT]

because you don't want heat to dissipate, heat helps the turbo's spool faster.
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hmm. Now that I did not know. So what would u recommend for exhaust when going TT setup.

So trying to make everything under the hood cooler is no good when going turbo. Man I though the cooler the better. Though thats why people get their exhaust mani and turbines jet coated
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That depends on your goals. If it isn't over ~600rwhp, then I would consider what the market currently offers in 2.5"-3.0" tubing. If it's over that, I would look into a custom exhaust setup.

You want the exhaust side of the turbocharger to be hot, however, you want to keep it just within the exhaust side, once it is spun into the intake side, you want it to be as cool as possible. Exactly, which isn't a smart move IMO. I plan on jet hot coating the intake side and using a insulator blanket for the exhaust side.

 

[smoothz]

No, no, no! You want it cool in the engine bay! The turbos operate off the exhaust coming out of the headers. That's where it's hot. Cool air comes in, hot air goes out. Ultimately, the intercooler helps both depts.

 

[darkplague]

So is what Nis350ZTT said is not correct??

 

[Nis350ZTT]

[/quote]
No, he was saying the same thing. You don't want heat on the intake tubing (intake housing on the turbocharger) nor anywhere else, other than the exhaust housing of the turbocharger.

 

[darkplague]

oh I see. Thanks for the info. So would titanium would not be the way to go if I am running TT setup. ****. I llike that look.

Now its just tyring to decide on a exhaust

 

[Nis350ZTT]

[/quote]
No problem. Well, not for test pipes. But, for an exhaust, you might want to. Now that I think about it the only part that may affect the turbo spool time would be the test pipes and the exhaust housing on the turbo. I don't think it will matter what material you use on a y-pipe/test pipe-back exhaust...as long as it creates proper backpressure for the turbo.