GM Reveals 4.2L LTA Twin-Turbocharged V8 - Page 6

lt4camaro · 03-24-2018, 08:25 AM

Quote:

Originally Posted by snizzle

Why am I seeing biturbo in some places?

Doesnt biturbo mean twin turbo ?

crysalis_01 · 03-24-2018, 09:25 AM

Quote:

Originally Posted by lt4camaro

Doesnt biturbo mean twin turbo ?

Honestly both terms should be dropped. Twin is a form of a bi-turbo setup. Like how all squares are rectangles but not all rectangles are squares. However, they don't necessarily tell enough of the whole story. Better designations would be single, parallel, or sequential.

lt4camaro · 03-24-2018, 11:49 AM

Quote:

Originally Posted by crysalis_01

Honestly both terms should be dropped. Twin is a form of a no-turbo setup. Like squares and rectangles. However, they don't necessarily tell enough of the whole story. Better designations would be single, parallel, or sequential.

I have always seen twin turbo's referred to as twin turbo's. Mercedes uses the biturbo term for there twin turbo car's.

whiteboyblues2001 · 03-26-2018, 10:47 AM

Quote:

Originally Posted by lt4camaro

I have always seen twin turbo's referred to as twin turbo's. Mercedes uses the biturbo term for there twin turbo car's.

Man, it's like those Germans have a different word for everything!

whiteboyblues2001 · 03-26-2018, 10:50 AM

Quote:

Originally Posted by crysalis_01

I was referring to a hypothetical mid engine Cadillac.

XLR has been used in the past, and they had an XLR-V version as well, so they may use that. I prefer names, but I don't get to make these decisions...

JerTM · 03-26-2018, 01:05 PM

From what I understand:
Bi-Turbo is two turbos. They could be identical or they could be different.
Twin Turbo is two identical turbos.

Martinjlm · 03-26-2018, 01:16 PM

Quote:

Originally Posted by JerTM

From what I understand:
Bi-Turbo is two turbos. They could be identical or they could be different.
Twin Turbo is two identical turbos.

I think it is a manufacturer defined difference without a distinction. For example, BMW describes engines with one twin-scroll turbo as being bi-turbo and use the brand name Twin-Power.

Ryephile · 03-26-2018, 03:11 PM

FYI: BMW Twin-Power is ironic marketing speak for Turbo + Valvetronic + Direct Injection. There are BMW Twin-Power engines that range from single turbo to quad turbo, the number of turbos is not distinguished in marketing term. That said, BMW has a class-action lawsuit against them for the branding being misleading, understandably.

The new Caddy engine uses two identical turbo's in a one-per-cylinder-bank parallel setup.

snizzle · 03-26-2018, 03:16 PM

So thoroughly confused, I did some searching and enjoyed this...

Quote:

So, let me just make this clear (I hope I'm not wrong, that would make me sound dumb). Twin turbo and Biturbo mean the exact same thing. They mean two turbos. There is no difference. It's marketing speak. Mercedes uses the term Biturbo because it sounds uppity classier? BMW uses the term TwinPowerTurbo because it sounds stupid sportier. It has nothing to do with the turbos being sequential or parallel, it has nothing to do with which specific cylinders feed the turbos, it has nothing to do with the size of the turbos, it has nothing to do with where they are located. Bi=Two=Twin. That is all. End rant.

Royal Tiger · 03-26-2018, 03:39 PM

The name Biturbo came to significance with Maserati in the early 1980’s.

whiteboyblues2001 · 03-27-2018, 08:55 AM

Quote:

Originally Posted by snizzle

So thoroughly confused, I did some searching and enjoyed this...

I think that guy is wrong, BMW's TwinPower turbo (I think) refers to a twin scroll tubo(s). So it could be one twin scroll turbo or two.

Pretty confusing!

lt4camaro · 03-27-2018, 10:56 AM

Domestic OEM typically keep it simple, twin turbo means the car has 2 turbos's

Ryephile · 03-27-2018, 04:20 PM

Quote:

Originally Posted by whiteboyblues2001

I think that guy is wrong, BMW's TwinPower turbo (I think) refers to a twin scroll tubo(s). So it could be one twin scroll turbo or two.

Pretty confusing!

Read three posts above yours.

https://www.autoevolution.com/news/b...ned-50443.html

..and in BMW's own press release: "...combines the latest injection technology and Valvetronic fully variable valve control including double-VANOS with innovative turbocharger technology."

whiteboyblues2001 · 03-28-2018, 08:50 AM

Quote:

Originally Posted by Ryephile

Read three posts above yours.

https://www.autoevolution.com/news/b...ned-50443.html

..and in BMW's own press release: "...combines the latest injection technology and Valvetronic fully variable valve control including double-VANOS with innovative turbocharger technology."

I did. It also states: " Twin-scroll turbocharging is basically the core technology for TwinPower Turbo BMWs, but not all them have it nowadays."

And from what I remember, TwinPower was when BMW started using the twin-scrolls. It's just that now, they don't always use twin-scroll. Soooo apparently we have to believe that TwinPower Turbo means turbo with valvetronic and direct injection. Even though BMW used valvetronic before turbo charging and the TwinPower name. And I don't think they use DI in their diesels.

In any event, it's a crappy misleading name. I have met several people that thought they had two turbos, only to be confused and a tad bit disappointed when I told them they only have one (not that it matters).

03-26-2018, 03:11 PM	#78
Ryephile Hot Dog Drives: '17 1SS 1LE Join Date: Feb 2016 Location: Metro Detroit Posts: 1,937	FYI: BMW Twin-Power is ironic marketing speak for Turbo + Valvetronic + Direct Injection. There are BMW Twin-Power engines that range from single turbo to quad turbo, the number of turbos is not distinguished in marketing term. That said, BMW has a class-action lawsuit against them for the branding being misleading, understandably. The new Caddy engine uses two identical turbo's in a one-per-cylinder-bank parallel setup. __________________ 2017 "M1SS1LE" in Hyper Blue w/PDR

03-26-2018, 01:05 PM	#76
JerTM Drives: 2011 2SS/RS M6 Join Date: Oct 2015 Location: Utah Posts: 1,940	From what I understand: Bi-Turbo is two turbos. They could be identical or they could be different. Twin Turbo is two identical turbos.

03-26-2018, 03:39 PM	#80
Royal Tiger Account Suspended Drives: 2013 2SS/RS Convertible Join Date: Apr 2016 Location: Lehigh Valley, PA Posts: 3,873	The name Biturbo came to significance with Maserati in the early 1980’s.

03-27-2018, 10:56 AM	#82
lt4camaro Drives: 2021 LT1 10 speed auto Join Date: May 2013 Location: Connecticut Posts: 2,343	Domestic OEM typically keep it simple, twin turbo means the car has 2 turbos's