Single Turbo LS1 FD.
#76
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http://www.torquecentral.com/showthr...ighlight=turbo
Heres the thread i meant to post earlier hehe. The setup is looking great wingsfan. That thing is gonna make some power.
Heres the thread i meant to post earlier hehe. The setup is looking great wingsfan. That thing is gonna make some power.
#77
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Looks like you have the makings of a turbo setup Wingsfan. Can't wait to see the finished product. You should just run the 5.3 cast manifold on the drivers side. It at least won't crack.
Your mild steel will be prone to constant cracking even with hi temp coating. I'd do it right and do 321 s/s.
Good luck with the project.
BTW- where did you get the collectors?
-GNX7
Your mild steel will be prone to constant cracking even with hi temp coating. I'd do it right and do 321 s/s.
Good luck with the project.
BTW- where did you get the collectors?
-GNX7
#78
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Originally Posted by gnx7
You should just run the 5.3 cast manifold on the drivers side. It at least won't crack.
Your mild steel will be prone to constant cracking even with hi temp coating. I'd do it right and do 321 s/s.
Good luck with the project.
BTW- where did you get the collectors?
-GNX7
-GNX7
#79
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Haven't updated this thread in awhile, and since I'm an attention *****, and many of you don't frequent Torquecentral...well here's a few pics. I've been busy.
Last edited by wingsfan; 07-10-05 at 09:25 PM.
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Some specs.
The turbo is a Precision T76-GTS. Rated to 1100 bhp. 3" to 4" downpipe. 1.75" primaries 3" collectors reduced to 2.5" that Y together to a 3" feed pipe (open T4). I went with the Turbosmart progate 48mm wastegate (stuck in customs), and v-band clamps on everything. Once the WG gets here I'll wrap it up and send them off to Jet Hot for coating.
There's light at the end of the tunnel.
The turbo is a Precision T76-GTS. Rated to 1100 bhp. 3" to 4" downpipe. 1.75" primaries 3" collectors reduced to 2.5" that Y together to a 3" feed pipe (open T4). I went with the Turbosmart progate 48mm wastegate (stuck in customs), and v-band clamps on everything. Once the WG gets here I'll wrap it up and send them off to Jet Hot for coating.
There's light at the end of the tunnel.
#82
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Why does it have a expanding dump pipe?
Wouldnt you want it to taper to make sure its going to keep up velocity? If youre going this far might as well nitpick everything
Oh, and throw that monster in a wind tunnel and route the opening for the exhaust into a low-pressure area of the car when at speed for a little extra oomph.
Wouldnt you want it to taper to make sure its going to keep up velocity? If youre going this far might as well nitpick everything
Oh, and throw that monster in a wind tunnel and route the opening for the exhaust into a low-pressure area of the car when at speed for a little extra oomph.
#83
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Originally Posted by Nihilanthic
Why does it have a expanding dump pipe?
Wouldnt you want it to taper to make sure its going to keep up velocity? If youre going this far might as well nitpick everything
Wouldnt you want it to taper to make sure its going to keep up velocity? If youre going this far might as well nitpick everything
Oh, and throw that monster in a wind tunnel and route the opening for the exhaust into a low-pressure area of the car when at speed for a little extra oomph.
#84
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THERE IS NO SUCH THING |AS TOO MUCH OOMPH!
And I know its about eliminating your backpressure. I have heard that for really long exhaust systems or for some that are too big for the application (which I doubt in this case, but in principle...) the speed of the exhaust gas can slow down and build up a little bit of backpressure in trying to shove out the stagnated air. If its tapering, as it cools going down the pipe it will be less likely to slow down.
But then again the dump pipe looks pretty short so its not really a signifigant effect in this case
And I know its about eliminating your backpressure. I have heard that for really long exhaust systems or for some that are too big for the application (which I doubt in this case, but in principle...) the speed of the exhaust gas can slow down and build up a little bit of backpressure in trying to shove out the stagnated air. If its tapering, as it cools going down the pipe it will be less likely to slow down.
But then again the dump pipe looks pretty short so its not really a signifigant effect in this case
#85
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Originally Posted by Nihilanthic
THERE IS NO SUCH THING |AS TOO MUCH OOMPH!
And I know its about eliminating your backpressure. I have heard that for really long exhaust systems or for some that are too big for the application (which I doubt in this case, but in principle...)
And I know its about eliminating your backpressure. I have heard that for really long exhaust systems or for some that are too big for the application (which I doubt in this case, but in principle...)
It's 4". It's not too big for the application. Go spend some time on a Supra board, or in the FI section at LS1 tech and you'll see what I mean.
There's 5.7L of engine (soon to be 6.3L) pushing exhaust through a 3" opening at the turbo at around 1600º. I could go upwards of 5" in diameter and it still wouldn't be too big for this app.
the speed of the exhaust gas can slow down and build up a little bit of backpressure in trying to shove out the stagnated air. If its tapering, as it cools going down the pipe it will be less likely to slow down.
But then again the dump pipe looks pretty short so its not really a signifigant effect in this case
#87
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I must not have looked at the pics right, because it looked like one of those wide stubby dump pipes thats barely more than 2 feet long that Ive seen on some of the crazier turbo cars.
But, if its 4" all the way to the back, well then I stand corrected.
BTW, where the hell do you go to find out proper exhaust diameter size for a given hp? Or is it still more of a black art than anything else?
But, if its 4" all the way to the back, well then I stand corrected.
BTW, where the hell do you go to find out proper exhaust diameter size for a given hp? Or is it still more of a black art than anything else?
#88
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Originally Posted by Nihilanthic
I must not have looked at the pics right, because it looked like one of those wide stubby dump pipes thats barely more than 2 feet long that Ive seen on some of the crazier turbo cars.
But, if its 4" all the way to the back, well then I stand corrected.
But, if its 4" all the way to the back, well then I stand corrected.
BTW, where the hell do you go to find out proper exhaust diameter size for a given hp? Or is it still more of a black art than anything else?
For turbo purposes you pretty much want to run the biggest exhaust you can fit. A 4" exhaust path is going to provide me with some wiggle room in regards to back pressure.
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Originally Posted by artguy
jesus man....you are going to have one hell of a monster once you get it all finished.
yowza.
yowza.
And of course, I plan to catch a lot of flak by taking it to a TexasRxs meet. Too bad you're not in town anymore.
#90
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Originally Posted by wingsfan
For turbo purposes you pretty much want to run the biggest exhaust you can fit. A 4" exhaust path is going to provide me with some wiggle room in regards to back pressure.
-Tim
#91
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Thanks Andrew. You have made me totaly make up my mind about not going turbo. I'm just going to build a mean Stroker setup.
And the TexasRX's guys gave me a weird look when I told them about my plans. But they saw where I was coming from. They'll talk **** until you beat their asses.
And the TexasRX's guys gave me a weird look when I told them about my plans. But they saw where I was coming from. They'll talk **** until you beat their asses.
#92
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Originally Posted by 95EclipseGST008
Ideal would be no exhaust at all
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Originally Posted by Klar
Thanks Andrew. You have made me totaly make up my mind about not going turbo. I'm just going to build a mean Stroker setup.
And the TexasRX's guys gave me a weird look when I told them about my plans. But they saw where I was coming from. They'll talk **** until you beat their asses.
One of these days I'll make it out there for a meeting...even if the only erason is that we're running low on Rudy's "Sause".
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