Turbo Supercharged G60

by **CorradoVR6-Turbo** » February 9th, 2007, 7:14 pm

Thats the hole point of twin turbos the small one will spool straight away and when that puffs out the bigger one will take over.
So you have no lag :twisted:

by **Henny** » February 23rd, 2007, 6:41 pm

um... Guys, that's not a twin turbo setup... :roll:

Twin turbo setups use 2 identical turbos, one each for half of the engine's cylinders (eg one turbo for left bank and one for the right bank on a V engine...)
BI-TURBO setups use 2 different turbos, one for low end, one for high end...

by **Andy665** » February 23rd, 2007, 6:46 pm

Twin turbo, bi-turbo, sequential turbo - not an exact science in terms of how they are described.

The 335i BMW is set-up as Henny describes a bi-turbo but BMW call it sequential turbocharging

by **kevhaywire** » February 25th, 2007, 1:35 pm

Sequential turbo is one small one and then a bigger one, that's what sequential means, one followed by the next!....so yes, BMW are using the word incorrectly. There's as you say, is a turbo per bank, so twin or bi turbo.

I believe the 335d uses sequential turbos though.

When have BMW ever made sense though? A 3.0 engine with a 335i badge? Or a 2.3 engine with a 325i badge?

by **GazzaG60** » February 26th, 2007, 10:20 am

not much point on a 4 pot let alone one without 2 banks of cylinders.

The subaru legacy B4 is a TT. 0 point. may as well use one good quality turbo.

by **kevhaywire** » February 26th, 2007, 12:01 pm

Yeah 2.0 and smaller 4 pots don't really have enough exhaust flow to justify two turbos.

A GT3071R works very well with 1.4 litre capacity though, as a good mod is one per bank in a Porsche 911 :lol:

by **vdubCorrado** » February 26th, 2007, 5:30 pm

there are tohers here in the states as well, but this one is always easiest to find pictures of...

by **G60-NeedMoorePoower** » April 10th, 2007, 9:29 pm

twin turbo is not a preferred setup, spool over from small to large turbo is a common problem..
ecu / boost controlling 2 turbos is tricky..

supra and rx-7 are an example of twin turbos as std, supra or skyline where its a 6 cylinder 1x turbo can service each "bank" of cylinders....etc ...esp where there are space constraints..

big power always requires big single turbo

Turbo Supercharged G60

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