1M comes with Valvetronic?!

[Simsims]

Did I miss something?

I thought the N55 was the only engine with valvetronic.

But according to http://www.1addicts.com/forums/showthread.php?t=481113 see attachments, 1M has valvetronic?!?

I've been lurking on the forum and I thought I knew it all..

[Simsims]

ok must've missed it. It's equipped with the N55?

I thought all early indications pointed to N54

[Simsims]

More confused. TwinPower Turbo is the twinscroll. But people kept saying N54...

[Simsims]

engine code N54B30T0

CONFUSED!!

[marcel b]

mistake?

in the text they write it is an N54, and all other information confirms this. I guess the person making the brochure made a mistake

[treehacker]

and whats about the idea of what Scott said... its a hybrid of both engines.... ?!

[Simsims]

Originally Posted by marcel b

mistake?

in the text they write it is an N54, and all other information confirms this. I guess the person making the brochure made a mistake

BUTBUTBUT if you look at this:
http://www.1addicts.com/forums/showthread.php?t=463733

It also says N54. But it also says TwinPower Turbo.

Something is seriously wrong. Scott said Hybrid... but if hybrid meaning N55 turbos and valvetronics... then it's just N55 since the block makes no difference!

[moveswiftly]

you guys are confused

Its an N54, the same n54 used in Pre 2011 135i's.

Take a look at the engine bay. It is NOT A Twin Power turbo(n55).

[Simsims]

Originally Posted by chesterfan1230

you guys are confused

Its an N54, the same n54 used in Pre 2011 135i's.

Take a look at the engine bay. It is NOT A Twin Power turbo(n55).

That's what I'm trying to get to

Everyone's confirming N54s. But the BMW release docs for Canada says TwinPower Turbo, WITH valvetronic.

Also if you look at south's published data it ALSO says TwinPower Turbo.

Someone in BMW is confused. I'm trying to straighten it out

[treehacker]

But TwinPower Turbo means only that it has 2x Turbos. In case of N54 there are 2 separate Turbos and in case of N55, the 2x Turbos are in one housing and attached with TwinScroll Technology (Turbo layout).
I think, the N54 motor of the 1M has 2x separate Turbos BUT it uses Valvetronic.
Or just dreaming... hehe.. it may have 2x separate Turbo housings using TwinScroll Technology.. so it would have 4 Turbos :-P

[Simsims]

Originally Posted by treehacker

But TwinPower Turbo means only that it has 2x Turbos. In case of N54 there are 2 separate Turbos and in case of N55, the 2x Turbos are in one housing and attached with TwinScroll Technology (Turbo layout).
I think, the N54 motor of the 1M has 2x separate Turbos BUT it uses Valvetronic.
Or just dreaming... hehe.. it may have 2x separate Turbo housings using TwinScroll Technology.. so it would have 4 Turbos :-P

TwinPower Turbo is what they called the twinscroll

[treehacker]

Originally Posted by Simsims

TwinPower Turbo is what they called the twinscroll

Nope... check out BMW Techlexikon.

[treehacker]

Ok, sorry... you are right. They call it TwinScroll also. I rechecked all the terms now and its like that:

The definition of "M TwinPower Turbo" is used also for the X5/X6 M and there it also have TwinScroll. TwinScroll means they use one turbo with a patented tube to from the motor exhaust into the Turbo. The TwinScroll Turbo has 2x main rotors which get the exhaust from half of the cylinder each rotor. In case of X6M they have 2x Turbos with TwinScroll Technology which means there are 4x Rotors which get the exhaust from 2 cylinders each.
The 1M uses M TwinPower Turbo but it does not say that it uses TwinScroll Technology.

Here is some interesting info:
http://www.vanguard-performance.com/...mw-n54-vs-n55/

[zEdP]

The N54 has NO valvetronic.

The N54B30 does not use the second generation Valvetronic technology found in the naturally aspirated N52 and the newer (single) turbocharged straight-6 N55.

http://en.wikipedia.org/wiki/BMW_N54

[Redadair]

It looks as though BMW's press people are as confused by the words "TwinPower Turbo Technology" as we are.

From the BMWUSA web site http://www.bmwusa.com/default.aspx Look at the US Spec for the Z4is which we know is the same engine as the 1M. At the top of the Spec page explains the engine with Double-VANOS steplessly variable valve timing, but not Valvetronic.

The BMW Press release for the 1M did not say the 1M engine included Valvetronic as well.

http://rawautos.com/2010/12/press-re...orld-meet-1-m/

[treehacker]

as far as I know all new BMW Motors use Double Vanos. But the new Double-Vanos system with integrated valve control is called "Valvetronic".

[Redadair]

Originally Posted by treehacker

as far as I know all new BMW Motors use Double Vanos. But the new Double-Vanos system with integrated valve control is called "Valvetronic".

You are correct, sorry my confusion as well. I will edit my post.

Thanks

[treehacker]

--

[penny]

Maybe this is the "hybrid" Scott was talking about in the past.

Edit: Treehacker, you beat me.

[Robert]

Thought the goal of N55 was better fuel efficiency therefore the single turbo and twinscroll design. Maybe valvetronic helps?

[southlight]

BMW uses the term TwinPower Turbo for most if not all of their turbo engines, it's not a term indicating a certain technology. It can be either two turbos (N54 for the 1M, N63 for the 550i) or one twinscroll turbo (N55 for the x35i, N20 for the x28i), or even a sequential turbo as found in the 535d.

Finally, the 1M engine does not have Valvetronic.


Best regards,
south

[M3 Adjuster]

Originally Posted by southlight

BMW uses the term TwinPower Turbo for most if not all of their turbo engines, it's not a term indicating a certain technology. It can be either two turbos (N54 for the 1M, N63 for the 550i) or one twinscroll turbo (N55 for the x35i, N20 for the x28i), or even a sequential turbo as found in the 535d.

Finally, the 1M engine does not have Valvetronic.


Best regards,
south

Kinda like an M badge doesn't indicate a certain technology...