180 Headers w/Turbo did it work ?
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From: PDX-OR-USA
180 Headers w/Turbo did it work ? So I'm curious,, has anyone built a set of 180 degree headers to feed a turbo?
How did it work out? I'd assume it would be best with twins..
They were a brief "cheat" years ago, on a N/A race car they gave a big power bump ..
They were big on road race cars..
https://www.hotrod.com/articles/180-...drange-torque/
How did it work out? I'd assume it would be best with twins..
They were a brief "cheat" years ago, on a N/A race car they gave a big power bump ..
They were big on road race cars..
https://www.hotrod.com/articles/180-...drange-torque/
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From: Norn Iron
It would be a similar thing to twin scroll...but ultimately almost impossible to achieve. It'd be a hell of a lot of work for little gains in most cases.
but if you have the room and ability to do this on a twin turbo setup, go for it. Single turbo ? probably a complete waste of time and energy
but if you have the room and ability to do this on a twin turbo setup, go for it. Single turbo ? probably a complete waste of time and energy
Without a backpressure ratio of less than 1/1, I cannot imagine how this would be of any benefit at all. Doubt seeing any real world benefits. The tiny theoretical HP gain would likely be offset by the extra weight of the headers and other plumbing.
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From: PDX-OR-USA
It was purely a "wonder" kinda question,, The only thing I could see is that you might get some spool advantage because the 180 header creates (From what I can find reading) higher velocity and less reversion. Plus well, on the right car they sound pretty freeking cool. (Ya know the important part) LOL
First car I ever heard them on was a 68 Camaro.. Road racing..
First car I ever heard them on was a 68 Camaro.. Road racing..
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It was purely a "wonder" kinda question,, The only thing I could see is that you might get some spool advantage because the 180 header creates (From what I can find reading) higher velocity and less reversion. Plus well, on the right car they sound pretty freeking cool. (Ya know the important part) LOL
First car I ever heard them on was a 68 Camaro.. Road racing..
First car I ever heard them on was a 68 Camaro.. Road racing..
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From: Duvall, WA
One thing that is interesting to note is that some "hot V" configurations of factory-turbocharged V8s actually do use this type of cross-bank cylinder pairing. However, it's a lot less plumbing when you have all of the exhaust ports on the inside of the V. Seems like more trouble than it's worth on a conventional V8.
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From: Norn Iron
It would be a similar thing to twin scroll...but ultimately almost impossible to achieve. It'd be a hell of a lot of work for little gains in most cases.
but if you have the room and ability to do this on a twin turbo setup, go for it. Single turbo ? probably a complete waste of time and energy
but if you have the room and ability to do this on a twin turbo setup, go for it. Single turbo ? probably a complete waste of time and energy
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From: Norn Iron
Although may as well post about a 8-1 tubular single turbo setup which is a bit mad
http://www.speedhunters.com/2015/05/...la-drift-2015/
http://www.speedhunters.com/2015/05/...la-drift-2015/
although may as well post about a 8-1 tubular single turbo setup which is a bit mad
http://www.speedhunters.com/2015/05/...la-drift-2015/
http://www.speedhunters.com/2015/05/...la-drift-2015/
I wouldn't say the benefits aren't' there. They seem pretty clear on the 4-6cyl world. A v8 would have even more interfering pulses and more frequent exh pulses, so wouldn't the benefits be even greater?
Wouldn't running a true TS with a single be more beneficial? You'd have divided pulses acting on the same exh. wheel with no interruptions. So the same wheel is hit with twice as many exh pulses. It think that would give it much better response than if you divided the pulses between 2 turbos?
Typical V6 TS setup VS open scroll on same sized turbo w/ swapped housings and manifold.
I think BMW did it right on their TS V8 setup. Simple short routing up top with the intakes where the EXH ports usually are. Don't get the goofy piping octopus that way. Seems like the examples above are using pretty huge piping diameter as well... is that 2"?
Wouldn't running a true TS with a single be more beneficial? You'd have divided pulses acting on the same exh. wheel with no interruptions. So the same wheel is hit with twice as many exh pulses. It think that would give it much better response than if you divided the pulses between 2 turbos?
Typical V6 TS setup VS open scroll on same sized turbo w/ swapped housings and manifold.
I think BMW did it right on their TS V8 setup. Simple short routing up top with the intakes where the EXH ports usually are. Don't get the goofy piping octopus that way. Seems like the examples above are using pretty huge piping diameter as well... is that 2"?
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From: Norn Iron
A V6 single wouldn't see the same possible benefits a 4 cyl would, simply due to the firing angles.
And normally an LS would not benefit either...simply because of the difficulty in routing the relevant cylinders to each section of each turbine, because crossing from side to side is needed.
But really...the work to achieve it vs rewards..is questionable. Although in part he's doing it for a better sound.
Either way, looks bloody impressive and the car will be an animal. Overall weight will be around 1800lbs or so.
And normally an LS would not benefit either...simply because of the difficulty in routing the relevant cylinders to each section of each turbine, because crossing from side to side is needed.
But really...the work to achieve it vs rewards..is questionable. Although in part he's doing it for a better sound.
Either way, looks bloody impressive and the car will be an animal. Overall weight will be around 1800lbs or so.
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From: Norn Iron
With Andy, it will be for pretty much anything. I'd say initially some of the Time Attack type stuff or Super Lap Scotland as it's his local. He's already said it doesn't fit within WTAC's current rules...but who knows, maybe they might change ?
But when finished it will have huge aero as well for when needed.
Either way, just something very fast he can use, that doesnt cost a clean fortune to use or maintain. That said, his little Honda Westfield is already blowing cars away around most tracks.
But when finished it will have huge aero as well for when needed.
Either way, just something very fast he can use, that doesnt cost a clean fortune to use or maintain. That said, his little Honda Westfield is already blowing cars away around most tracks.
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Steve, I would have thought an LS powered LS, minus the turbos would give a pretty potent package that would be cheap ish to run. The turbos are just going to make it mental! Love it! 😊
if that the same Andy that used to run the F1 turbo’ed Hayabusa Dax years ago?
if that the same Andy that used to run the F1 turbo’ed Hayabusa Dax years ago?
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From: Norn Iron
Steve, I would have thought an LS powered LS, minus the turbos would give a pretty potent package that would be cheap ish to run. The turbos are just going to make it mental! Love it! 😊
if that the same Andy that used to run the F1 turbo’ed Hayabusa Dax years ago?
if that the same Andy that used to run the F1 turbo’ed Hayabusa Dax years ago?