More turbos???
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Launching!
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More turbos??? Newbie at turbos, please school me. If you have one turbo you develop boost, say 8lbs, but are limited on airflow. Now say you add a turbo that also produces 8lbs together they still only make 8lbs, but double the flow. Correct? Why don't you see more setups running like 4 T3's or small turbos instead of one or two large ones? Is it just wasted energy, drag, and excess heat or just too much effort for the same or less gain? More costly? Just seems like you could pick up cheap stockish T3's all day long, use more, get creative with fab, and it would look intimidating. Would a setup like that spool faster or slower? Don't be shy call me a idiot
if you think that idea is stupid that is part of the learning curve. Thanks guys.
if you think that idea is stupid that is part of the learning curve. Thanks guys. I understand what you're saying but could'nt give you an answer.
I always thought it would be cool to have four gt-22s...each having it's own exhaust manifold coming from two adjoining cylinders. Not necessarily gt-22s but something of similar size.
I always thought it would be cool to have four gt-22s...each having it's own exhaust manifold coming from two adjoining cylinders. Not necessarily gt-22s but something of similar size.
Well there is piping and plumbing and adding costs and space limitations.
This is one reason guys go to twins. Two turbos can give double the airflow of say one big turbo and spool up quicker. My twins can do 50 pounds of airflow each so thats around 1000engine hp potential. A big single might do say 100 pounds of airflow but would be a lot slower to spool up and give a much narrower powerband.
But past two is getting ridiculous . But think there is a quad turbo veryon or something they have been done just not practical.
This is one reason guys go to twins. Two turbos can give double the airflow of say one big turbo and spool up quicker. My twins can do 50 pounds of airflow each so thats around 1000engine hp potential. A big single might do say 100 pounds of airflow but would be a lot slower to spool up and give a much narrower powerband.
But past two is getting ridiculous . But think there is a quad turbo veryon or something they have been done just not practical.
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if i had the time or the ability, quad rear mount setup in my car
(after trunk cut out) is doable. i could put 4 turbos and go 4 into 2 into 1
(each side) up the fender wells...now that would be sick!
i just don't see the need.so the idea died right there.
like i said, go nutz! blow minds, and money.
(after trunk cut out) is doable. i could put 4 turbos and go 4 into 2 into 1
(each side) up the fender wells...now that would be sick!
i just don't see the need.so the idea died right there.
like i said, go nutz! blow minds, and money.
Look at the Bughatti Veyron! Heavy as hell too, small *** car, but heavy, quad turbo, and some serious displacement! It's doable, just makes it a little hard to work on considering the very, very small gain. I think about twin is about as big as you'd need to go!
There are designs that would permit 4 turbos being a decent concept, but it would be a huge engine with nearly unlimited space for packaging.
In most reasonable vehicles, the (very) minimal possible gains are going to be more than outweighed by cost and packaging issues. You also have 2-4x more places for failure with 2-4x as many turbos.
BTW, the Veyron is in fact a quad turbocharged "W" 16 engine. Those guys are crazy.
In most reasonable vehicles, the (very) minimal possible gains are going to be more than outweighed by cost and packaging issues. You also have 2-4x more places for failure with 2-4x as many turbos.
BTW, the Veyron is in fact a quad turbocharged "W" 16 engine. Those guys are crazy.
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From: Dubai
guys, how about a small and LARGER turbo, I know those are done on Supras and ive personally seen an RX7 with that set-up, but how is it set-up in the first place, no idea.
Thats as wicked as I would want to go, make low-end power, and make crazy high-end power as well.
Thats as wicked as I would want to go, make low-end power, and make crazy high-end power as well.
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Verdad Gallardo Banned
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this guy has it all figured out...
stick a half dozen of these bad boyz pre intake and
you'll be the man. fo' sho'!
http://www.youtube.com/watch?v=hM3jz...eature=related
stick a half dozen of these bad boyz pre intake and
you'll be the man. fo' sho'!
http://www.youtube.com/watch?v=hM3jz...eature=related
TECH Enthusiast
Joined: Oct 2007
Posts: 605
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From: NC
You mean sequential turbos? because having 2 different size turbos is asking for trouble. You might be thinking of sequential turbos, they are used on diesels. It uses a small turbo feeding into a bigger turbo(to spool faster) that then feeds into the intake. I think the new powerstrokes use something like that.
TECH Apprentice
Joined: Mar 2006
Posts: 361
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From: australia
You mean sequential turbos? because having 2 different size turbos is asking for trouble. You might be thinking of sequential turbos, they are used on diesels. It uses a small turbo feeding into a bigger turbo(to spool faster) that then feeds into the intake. I think the new powerstrokes use something like that.
compound turbos..
works really good on larger diesels
i work on 2200- 2600 hp diesels
have 4 turbos
6.5 inch bores and larger
8.5 inch strokes
V16 and v12's
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From: Dubai
You mean sequential turbos? because having 2 different size turbos is asking for trouble. You might be thinking of sequential turbos, they are used on diesels. It uses a small turbo feeding into a bigger turbo(to spool faster) that then feeds into the intake. I think the new powerstrokes use something like that.
Bigger turbo comes first, exhaust manfolds connect to the bigger turbo, exhaust escaping from the big turbo are then routed onto a smaller turbo, with a properly sized waste gate welded before the small turbo and a waste gate on the manifold.
The manifold wastegate will control the total boost in the system and will make sure that boost levels do not go above X- PSI, while the 2nd wastegate simply diverts excess air - passed a certain PSI - out of the small turbo's way.
Im not really good at this myself, but ill tell you that im good at coming up with weird and crazy ideas, im not saying I came up with this, ive seen this somewhere, but id love to customize something like this sometime.
There are other ways of doing this, twin-scroll turbos, variable geometry turbos etc...
You mean sequential turbos? because having 2 different size turbos is asking for trouble. You might be thinking of sequential turbos, they are used on diesels. It uses a small turbo feeding into a bigger turbo(to spool faster) that then feeds into the intake. I think the new powerstrokes use something like that.
Heres the 07 Brabus with a bi turbo v12.
http://www.rsportscars.com/mercedes-...biturbo-coupe/
"Performance figures of the Brabus SV12 S Biturbo displacement engine speak volumes: A rated power output of 730 bhp at 5,100 rpm is just as extraordinary as a peak torque of 974 lb-ft at just 2,100 rpm. In the car peak torque is limited electronically to 812 lb-ft."
TECH Resident
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From: Dubai
Mercedes has used a bi turbo setup on some v12s. I know in 05(I think) they had a slk or something that made 6XX/73X with a bi turbo v12.
Heres the 07 Brabus with a bi turbo v12.
http://www.rsportscars.com/mercedes-...biturbo-coupe/
"Performance figures of the Brabus SV12 S Biturbo displacement engine speak volumes: A rated power output of 730 bhp at 5,100 rpm is just as extraordinary as a peak torque of 974 lb-ft at just 2,100 rpm. In the car peak torque is limited electronically to 812 lb-ft."
Heres the 07 Brabus with a bi turbo v12.
http://www.rsportscars.com/mercedes-...biturbo-coupe/
"Performance figures of the Brabus SV12 S Biturbo displacement engine speak volumes: A rated power output of 730 bhp at 5,100 rpm is just as extraordinary as a peak torque of 974 lb-ft at just 2,100 rpm. In the car peak torque is limited electronically to 812 lb-ft."
BUT i might be wrong.
Thread Starter
Launching!
Joined: Jul 2008
Posts: 255
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this guy has it all figured out...
stick a half dozen of these bad boyz pre intake and
you'll be the man. fo' sho'!
http://www.youtube.com/watch?v=hM3jz...eature=related
stick a half dozen of these bad boyz pre intake and
you'll be the man. fo' sho'!
http://www.youtube.com/watch?v=hM3jz...eature=related
Thread Starter
Launching!
Joined: Jul 2008
Posts: 255
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So, aside from packaging issues, extra fabrication, extra parts to fail, extra heat, and extra cost, 4 small turbos would kickass, spool fast, have a wider range, look bitchin', and work as well as one large (maybe better) and as good as two medium sized turbos. Please correct me if I am wrong.
I am looking into ditching my old school blower motor in my Chevelle and building a turbo LS series motor. Plenty of room for packaging under that hood! I love the fabrication part. I want something that makes you look twice or maybe even twice, twice and runs hard. It seems like little import turbos are all over the place and cheap, so why not just snag 4 that are off the same model and build around them? What would be a cheapish readily available (probably used) turbo that would fit the bill and is rebuildable? It doesn't have to be 100% efficient for my build, just cost effective, fun and interesting? I am bored with the carb and blower. Any ideas?
I am looking into ditching my old school blower motor in my Chevelle and building a turbo LS series motor. Plenty of room for packaging under that hood! I love the fabrication part. I want something that makes you look twice or maybe even twice, twice and runs hard. It seems like little import turbos are all over the place and cheap, so why not just snag 4 that are off the same model and build around them? What would be a cheapish readily available (probably used) turbo that would fit the bill and is rebuildable? It doesn't have to be 100% efficient for my build, just cost effective, fun and interesting? I am bored with the carb and blower. Any ideas?
Last edited by crookedbowtie; Nov 24, 2008 at 11:02 PM.
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So, aside from packaging issues, extra fabrication, extra parts to fail, extra heat, and extra cost, 4 small turbos would kickass, spool fast, have a wider range, look bitchin', and work as well as one large (maybe better) and as good as two medium sized turbos. Please correct me if I am wrong.
I am looking into ditching my old school blower motor in my Chevelle and building a turbo LS series motor. Plenty of room for packaging under that hood! I love the fabrication part. I want something that makes you look twice or maybe even twice, twice and runs hard. It seems like little import turbos are all over the place and cheap, so why not just snag 4 that are off the same model and build around them? What would be a cheapish readily available (probably used) turbo that would fit the bill and is rebuildable? It doesn't have to be 100% efficient for my build, just cost effective, fun and interesting? I am bored with the carb and blower. Any ideas?
I am looking into ditching my old school blower motor in my Chevelle and building a turbo LS series motor. Plenty of room for packaging under that hood! I love the fabrication part. I want something that makes you look twice or maybe even twice, twice and runs hard. It seems like little import turbos are all over the place and cheap, so why not just snag 4 that are off the same model and build around them? What would be a cheapish readily available (probably used) turbo that would fit the bill and is rebuildable? It doesn't have to be 100% efficient for my build, just cost effective, fun and interesting? I am bored with the carb and blower. Any ideas?
Any ideas??? YEAH BLOODY DO IT!!!
then you can have a load of fun duilding it and testing it. if it all works then you can stick two fingures up to all these people that say "why??". if it dosen't work then YOU will have tried it and you can tell people as you have done it before.
it takes people like you to move the game on. it people that say "why??" that hold the game back. its only the people and companies outt here that are willing to try new things that push things forward. otherwise we wouild still all live in caves and beat the cr*p out of each other with lumps of wood...
if you do go for it please keep the people that are intrested informed.
Chris.
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The reason most don't go with multiple smaller turbos is because they want the highest peak numbers they can get. And set up the car to utilize it at the strip.
Multiple smaller turbos would net you some serious under the curve power and would be killer on the street. With today's impeller designs, a setup like this would probably have close to instant boost at any rpm. You won't see the peak numbers as someone with the same engine running higher pressure, but you will see more scoot while they wait for their bigger turbo to spool up to the higher pressure.
Multiple smaller turbos would net you some serious under the curve power and would be killer on the street. With today's impeller designs, a setup like this would probably have close to instant boost at any rpm. You won't see the peak numbers as someone with the same engine running higher pressure, but you will see more scoot while they wait for their bigger turbo to spool up to the higher pressure.