Interesting twin turbo setup......LOOK!
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From: PA
Car: 2002 Trans Am WS6
Engine: LS1
Transmission: T56
Axle/Gears: 4.10
Interesting twin turbo setup......LOOK!
This looks really cool, too bad its for a v8...but I'm sure with different headers it would work on a v6. Check it out

I think it's a kicka$$ design, let me knwo what u think.
I think it's a kicka$$ design, let me knwo what u think.
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Joined: Dec 2002
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From: Central FL
Car: 91 Camaro
Engine: 3.1...not hardly stock
Transmission: 700r4....not stock either
Axle/Gears: 3.73
from what i hear, a single turbo is often better than twin turbos. i don't know a lot about turbos but that's what i hear. that does look cool though.
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Non intercooled.
That's my only beef with it.
omfg I take that back... what's with the only wastegating from ONE cylinder??? what the hell?
Bad enough, but a 90º angle off the one? NEVER take a 90º for your wastegate - fluid dynamics, people!
What are those, T4 turbos? The exhaust housing looks a might big, vs the compressor housing, that looks a wee bit small. No where near equal length headers.
All in all, looks nice, but no real planning/engineering seems to have gone into it!!!
The stepped design coming out of the turbos, while a good idea, was approached from the wrong angle. A smooth transition from the (seemingly) 3" to the 2.5" would have been MUCH better. Even a short conical section!!
Christ, I gotta quit looking at this - no brackets holding that turbo/downpipe up? With what, 1/4" flanges on teh headers? I'd seriously beef up the support system there.
The oil plumbing, on the other hand, does look top notch!
That's my only beef with it.

omfg I take that back... what's with the only wastegating from ONE cylinder??? what the hell?
Bad enough, but a 90º angle off the one? NEVER take a 90º for your wastegate - fluid dynamics, people!
What are those, T4 turbos? The exhaust housing looks a might big, vs the compressor housing, that looks a wee bit small. No where near equal length headers.
All in all, looks nice, but no real planning/engineering seems to have gone into it!!!
The stepped design coming out of the turbos, while a good idea, was approached from the wrong angle. A smooth transition from the (seemingly) 3" to the 2.5" would have been MUCH better. Even a short conical section!!
Christ, I gotta quit looking at this - no brackets holding that turbo/downpipe up? With what, 1/4" flanges on teh headers? I'd seriously beef up the support system there.
The oil plumbing, on the other hand, does look top notch!
Last edited by Doward; Jan 9, 2005 at 01:18 PM.
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From: Calgary
Car: 1987 Z28
Engine: Tree Fiddy (modded)
Transmission: 700R4
Originally posted by Doward
Non intercooled.
That's my only beef with it.
omfg I take that back... what's with the only wastegating from ONE cylinder??? what the hell?
Bad enough, but a 90º angle off the one? NEVER take a 90º for your wastegate - fluid dynamics, people!
What are those, T4 turbos? The exhaust housing looks a might big, vs the compressor housing, that looks a wee bit small. No where near equal length headers.
All in all, looks nice, but no real planning/engineering seems to have gone into it!!!
The stepped design coming out of the turbos, while a good idea, was approached from the wrong angle. A smooth transition from the (seemingly) 3" to the 2.5" would have been MUCH better. Even a short conical section!!
Christ, I gotta quit looking at this - no brackets holding that turbo/downpipe up? With what, 1/4" flanges on teh headers? I'd seriously beef up the support system there.
The oil plumbing, on the other hand, does look top notch!
Non intercooled.
That's my only beef with it.

omfg I take that back... what's with the only wastegating from ONE cylinder??? what the hell?
Bad enough, but a 90º angle off the one? NEVER take a 90º for your wastegate - fluid dynamics, people!
What are those, T4 turbos? The exhaust housing looks a might big, vs the compressor housing, that looks a wee bit small. No where near equal length headers.
All in all, looks nice, but no real planning/engineering seems to have gone into it!!!
The stepped design coming out of the turbos, while a good idea, was approached from the wrong angle. A smooth transition from the (seemingly) 3" to the 2.5" would have been MUCH better. Even a short conical section!!
Christ, I gotta quit looking at this - no brackets holding that turbo/downpipe up? With what, 1/4" flanges on teh headers? I'd seriously beef up the support system there.
The oil plumbing, on the other hand, does look top notch!
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Joined: Dec 2000
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From: Tucson, AZ, USA
Car: '99 Trans Am, '86 Camaro
Engine: LS1, Scrap
Transmission: T56, T5
Axle/Gears: 3.42 Stock ZT, 3.42 Open
Well, it certainly LOOKS pretty... but...
I think Doward summed it up best.
Basically, as pretty as it looks, there's parts of my crappy prototype system are of similar or better design (he's got me on construction for now, but someone didn't do their homework). :P
I wouldn't bolt that onto one of my cars without at least some thicker flanges, mounting brackets, and solving that single cylinder wastegate.
Originally posted by Doward
Non intercooled.
only wastegating from ONE cylinder???
Bad enough, but a 90º angle off the one? NEVER take a 90º for your wastegate - fluid dynamics, people!
No where near equal length headers.
A smooth transition from the (seemingly) 3" to the 2.5" would have been MUCH better.
no brackets holding that turbo/downpipe up? With what, 1/4" flanges on teh headers?
Non intercooled.
only wastegating from ONE cylinder???
Bad enough, but a 90º angle off the one? NEVER take a 90º for your wastegate - fluid dynamics, people!
No where near equal length headers.
A smooth transition from the (seemingly) 3" to the 2.5" would have been MUCH better.
no brackets holding that turbo/downpipe up? With what, 1/4" flanges on teh headers?
Basically, as pretty as it looks, there's parts of my crappy prototype system are of similar or better design (he's got me on construction for now, but someone didn't do their homework). :P
I wouldn't bolt that onto one of my cars without at least some thicker flanges, mounting brackets, and solving that single cylinder wastegate.
Supreme Member
Joined: Aug 2002
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Originally posted by 83_Camaro_83
you just beat the criticising record! congradulations
you just beat the criticising record! congradulations
Supreme Member
Joined: Aug 2002
Posts: 3,827
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Originally posted by 305q_ta86
That is sex in the form of metal.
That is sex in the form of metal.
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Joined: Apr 2003
Posts: 270
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From: PA
Car: 2002 Trans Am WS6
Engine: LS1
Transmission: T56
Axle/Gears: 4.10
Sorry man, but I've had much better.... She looks great, yes, but her form sucks
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Ya seen that new sorta inter cooler for a turbo. Made for a low space turbo. Kind of like a system with two small trans cooler size radiators. One is sealed in an aluminum housing that air flows through. the other mounts near the air dam for cooling. It has a pump, a motor and a reservoir. It just pumps its own coolant through the system. Pretty neat. Not sure how well it works though.
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Joined: Oct 2003
Posts: 1,668
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From: Houston
Car: 86 Berlinetta 84 MonteCL
Engine: 3.4 MPFI 3.8 229
Transmission: 700r4 T350
I wonder if the 5-9 psi that's making will be enough to make power without too much detonation....
But it is pretty.
But it is pretty.
Bad enough, but a 90º angle off the one? NEVER take a 90º for your wastegate - fluid dynamics, people!
So you are saying it would be better to tie it in at a steep angle, thus leaving a knive-edge for the exhaust gases to hit? It is a well-known fact that moving gases (especially in intake manifold porting) do not like to hit a sharp edge, it breaks up smooth flow, and creates turbulence. I think the Ideal way to tie in a wastegate is to weld the flange directly to the tube, if possible.
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From: St. Louis, MO
Car: 85' Firebird (Project), 92' RS
Engine: 2.8L, LS1
Transmission: 700R4, 4L60E
Axle/Gears: 3.42 Open , 10 Bolt (ukn)
thought i saw two wastegates? or i'm confused by the little silver things on both sides of the pix.
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From: Smithfield, NC
Car: 1987 Camaro SC
Engine: 2.8L MPFI (rebuilt)
Transmission: 700R4 swapped to T5
Axle/Gears: 3.42 open
Originally posted by 85f-bird
thought i saw two wastegates? or i'm confused by the little silver things on both sides of the pix.
thought i saw two wastegates? or i'm confused by the little silver things on both sides of the pix.
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Joined: Oct 2001
Posts: 8,113
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Ya all sound like...........
Like a bunch of guys walking around a car at a show. Nit picking about how this or that isn't original. And then go get in their GEO and drive home.
Like a bunch of guys walking around a car at a show. Nit picking about how this or that isn't original. And then go get in their GEO and drive home.
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Joined: Aug 2002
Posts: 3,827
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Gumby, I wouldn't say that... it looks very good, yes, but in reality - it isn't engineered well at all. I think I have some room of experience to say that. 
The best way to have a wastegate come off, is at a shallow of an angle as possible. 90º is as bad as you can get, short of somehow trying to make the exhaust move BACKWARD up the WG tube!
And only coming off of 1 cylinder is simply inexcusable. The wastegate should be after the collector for the primaries.

The best way to have a wastegate come off, is at a shallow of an angle as possible. 90º is as bad as you can get, short of somehow trying to make the exhaust move BACKWARD up the WG tube!
And only coming off of 1 cylinder is simply inexcusable. The wastegate should be after the collector for the primaries.
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Joined: Nov 2002
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From: Castaic, CA
Car: 1988 Camaro RS
Engine: 2.8L of Raw POWER!!!
Transmission: Stick Shift
Axle/Gears: 3.42's
don't mean to sound anti-V6 or anything, but he's got MOST of us beat on base power + he's got a turbo..2 of them. I would jizz all over myself if someone gave me that for my car. I could get better, but what the hell, it's still better than what i have now...lol
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From: Yes I'm Dean
Car: Agood2.8,
Engine: V6rsr,
Transmission: Afrikingoodtime
Just in case any of you have never seen this 72 Dastun 510 that had a twin turbo 2.8L Chev 60*V6 in it.
And it hauled ***.
Its about 2/3rds the way down the link page, The white one with the flared fenders.
http://www.bryanf.com/510/cars.htm
There used to be a webpage specific for that car and the guy that owned it was named something like "Applegate" or "Appleton"
And it hauled ***.
Its about 2/3rds the way down the link page, The white one with the flared fenders.
http://www.bryanf.com/510/cars.htm
There used to be a webpage specific for that car and the guy that owned it was named something like "Applegate" or "Appleton"
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From: Ontario
Car: IROC Z
Engine: 5.7
Transmission: 700R4
i remeber looking at that site a few years ago and it is one of the very fee realllllly built 60* v6's
and that site hasnt worked for me in about a year as well.
did you see it up recently?
and that site hasnt worked for me in about a year as well.
did you see it up recently?
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Originally posted by 2_point8_boy
don't mean to sound anti-V6 or anything, but he's got MOST of us beat on base power + he's got a turbo..2 of them. I would jizz all over myself if someone gave me that for my car. I could get better, but what the hell, it's still better than what i have now...lol
don't mean to sound anti-V6 or anything, but he's got MOST of us beat on base power + he's got a turbo..2 of them. I would jizz all over myself if someone gave me that for my car. I could get better, but what the hell, it's still better than what i have now...lol
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Joined: Aug 2002
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Wastegate is a device to control the speed of a turbo's turbine - vents exhaust gases around the turbine, to keep the turbo from spinning faster (and building more boost)
The WG coming off one cylinder is a design that has been used on a few cars. I think the BBS turbo system is the same way.
This is pressure...not necessarily only flow. Even though its off one cylinder, that tube ties into the rest of the cylinders at the collector. Its not as good as it could be true, but it works just fine.
Blow up a latex glove and tie the end off. Even if you make a hole in the little pinky finger, pressure is still going to be relieved because it connects to the rest of the glove through the palm (collector)
This is pressure...not necessarily only flow. Even though its off one cylinder, that tube ties into the rest of the cylinders at the collector. Its not as good as it could be true, but it works just fine.
Blow up a latex glove and tie the end off. Even if you make a hole in the little pinky finger, pressure is still going to be relieved because it connects to the rest of the glove through the palm (collector)
Last edited by nightrider87; Mar 5, 2005 at 05:12 PM.
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Originally posted by nightrider87
The WG coming off one cylinder is a design that has been used on a few cars. I think the BBS turbo system is the same way.
This is pressure...not necessarily only flow. Even though its off one cylinder, that tube ties into the rest of the cylinders at the collector. Its not as good as it could be true, but it works just fine.
Blow up a latex glove and tie the end off. Even if you make a hole in the little pinky finger, pressure is still going to be relieved because it connects to the rest of the glove through the palm (collector)
The WG coming off one cylinder is a design that has been used on a few cars. I think the BBS turbo system is the same way.
This is pressure...not necessarily only flow. Even though its off one cylinder, that tube ties into the rest of the cylinders at the collector. Its not as good as it could be true, but it works just fine.
Blow up a latex glove and tie the end off. Even if you make a hole in the little pinky finger, pressure is still going to be relieved because it connects to the rest of the glove through the palm (collector)
Vents from the collector.
The glove analogy won't work - imagine trying to do that, with air flow at a tremendous rate, through the fingers.. the 'collector' would still get blown up!
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