compound turbos?
Thread Starter
Racer
Joined: Oct 2007
Posts: 326
Likes: 0
From: norwich ny
compound turbos?
i was wondering why you dont see compound turbos being used in the performance car world?... i see them used quite frequently on the diesel side with great success i have a friend with a modded cummins diesel he had a single 67mm turbo and made 45psi of boost and we built a twin turbo setup with the 67 feeding a 75mm s400 on the same truck and have a hard time keeping it under 80psi !!
Le Mans Master
Joined: Oct 2005
Posts: 7,088
Likes: 1,829
From: Metro Detroit Michigan
Because non-staged turbos will produce as much boost as most gas engines will handle.
When direct injection becomes more widely available on gas engines and is timed to the combustion event (like diesels), maybe that picture will change.
When direct injection becomes more widely available on gas engines and is timed to the combustion event (like diesels), maybe that picture will change.
Melting Slicks
Joined: Sep 2004
Posts: 3,153
Likes: 114
as Warp said, you can get all the boost you want from non staged turbos at the moment.
the other idea is sequential trubocharging to help reduce lag...however this is difficult and there are better ideas about....
Chris.
the other idea is sequential trubocharging to help reduce lag...however this is difficult and there are better ideas about....
Chris.
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
Direct injection like in the Solstice and Sky??
Race Director
Joined: Dec 1999
Posts: 10,230
Likes: 885
From: Alexandria, Virginia, USA VA
i was wondering why you dont see compound turbos being used in the performance car world?... i see them used quite frequently on the diesel side with great success i have a friend with a modded cummins diesel he had a single 67mm turbo and made 45psi of boost and we built a twin turbo setup with the 67 feeding a 75mm s400 on the same truck and have a hard time keeping it under 80psi !!
a good twin or single turbo will get us there just fine.
Safety Car
Joined: Jul 2004
Posts: 3,706
Likes: 2
From: Valrico Florida
diesels can tolerate WAY more cylinder pressure than gas engines. not much need for compound turbos on gas. direct injection is nice, but I don't think it will allow anything but more boost/power and a bit more mileage.
a good twin or single turbo will get us there just fine.
a good twin or single turbo will get us there just fine.
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