N54 6AT threshold?

DimSum · 09-20-2010, 10:49 PM

Does anyone know what the threshold limit for the N54 6AT transmission is?
Would DPs, FMIC and a V4 put a lot or too much strain on the 6AT in the 335i?
How long and how much HP are these trannys built to handle?
Please let me know, as I am very intrested in picking up a second hand 335i 6AT.

Thanks in advance.

NiVeDh · 09-20-2010, 10:50 PM

Get a 6MT man.

dboonephs · 09-20-2010, 10:54 PM

there are some AT guys pushing 430whp with no issues

badass335 · 09-20-2010, 10:57 PM

Quote:

Originally Posted by DimSum

Does anyone know what the threshold limit for the N54 6AT transmission is?
Would DPs, FMIC and a V4 put a lot or too much strain on the 6AT in the 335i?
How long and how much HP are these trannys built to handle?
Please let me know, as I am very intrested in picking up a second hand 335i 6AT.

Thanks in advance.

The auto tranny is fine. I've had Procede/ JB since 800km's on my car and i'm at 71000k's now. No issues. I'm running full mods with meth

itsbrokeagain · 09-20-2010, 11:23 PM

Quote:

Originally Posted by badass335

The auto tranny is fine. I've had Procede/ JB since 800km's on my car and i'm at 71000k's now. No issues. I'm running full mods with meth

you should look at getting it flushed soon.

The transmissions in these cars are the same ones bolted behind the V8 in the Alpina B7. I dont think we have any worries.

DimSum · 09-20-2010, 11:42 PM

Quote:

Originally Posted by Matt@Camber-Toe

you should look at getting it flushed soon.

The transmissions in these cars are the same ones bolted behind the V8 in the Alpina B7. I dont think we have any worries.

Done deal, that was the answer I am looking for

Quote:

Originally Posted by badass335

The auto tranny is fine. I've had Procede/ JB since 800km's on my car and i'm at 71000k's now. No issues. I'm running full mods with meth

+1 good to hear.

StartupJunkie · 09-21-2010, 12:33 AM

Hi DimSum,

I've been running at my power level since Feb 2010. I have had no problems with the 6AT, other than its BORING ... but the wife doesn't drive a manual.

I'm not sure what country you are located in, but if they have a DCT available, I would get that instead.

Junk

badass335 · 09-21-2010, 03:34 AM

Quote:

Originally Posted by Matt@Camber-Toe

you should look at getting it flushed soon.

The transmissions in these cars are the same ones bolted behind the V8 in the Alpina B7. I dont think we have any worries.

Had it flushed twice already. 25k and then around 55k for preventative maintenance!

IlChengis · 09-21-2010, 12:02 PM

Quote:

Originally Posted by NiVeDh

Get a 6MT man.

+1

AT

-Walter

Imperator · 09-21-2010, 02:58 PM

Quote:

Originally Posted by Treppiede

+1

AT

-Walter

Yeah, get a 6MT so you can better inspect the taillights of us with 6ATs and DCTs!

techlogik · 09-21-2010, 03:24 PM

I would surmise that the Auto is stronger than the MT...

xquizitdjx · 09-21-2010, 03:32 PM

Quote:

Originally Posted by Imperator

Yeah, get a 6MT so you can better inspect the taillights of us with 6ATs and DCTs!

Sorry for the noob question...
I just got my E92 07 335i 6AT and noticed the DCT button on the dash is this the DCT you are referring to?

Noc57 · 09-21-2010, 03:40 PM

Quote:

Originally Posted by xquizitdjx

Sorry for the noob question...
I just got my E92 07 335i 6AT and noticed the DCT button on the dash is this the DCT you are referring to?

No, what you're referring to is DTC (Dynamic Traction Control).

DCT (Dual Clutch Transmission) is an entirely different tranny that wasn't even offered on 335's until the 335is as a 2011 model. M3's have had it since 08.

enrita · 09-21-2010, 03:56 PM

Quote:

Originally Posted by Noc57

No, what you're referring to is DTC (Dynamic Traction Control).

DCT (Dual Clutch Transmission) is an entirely different tranny that wasn't even offered on 335's until the 335is as a 2011 model. M3's have had it since 08.

like EU 335i
my AT is holding up very well on upgraded turbos . i just changed oil after 4500 K and it was really time to change it. lots of metal deposit in it:

Jeff@TopGearSolutions · 09-21-2010, 04:00 PM

Quote:

Originally Posted by DimSum

Does anyone know what the threshold limit for the N54 6AT transmission is?
Would DPs, FMIC and a V4 put a lot or too much strain on the 6AT in the 335i?
How long and how much HP are these trannys built to handle?
Please let me know, as I am very intrested in picking up a second hand 335i 6AT.

Thanks in advance.

Only failure we've seen here is around 500WHP+ and 500WTQ+ with lots of 1/4 mile abuse and the use of nitrous.

6AT is boring to me... but its theoretically faster.

Brey335i · 09-21-2010, 07:22 PM

There are those running upgraded turbos on automatic transmissions with no problems at all. I don't think you need to be worried

cn555ic · 09-21-2010, 08:17 PM

Quote:

Originally Posted by JPSlick

Only failure we've seen here is around 500WHP+ and 500WTQ+ with lots of 1/4 mile abuse and the use of nitrous.

6AT is boring to me... but its theoretically faster.

THe failure was also created by the user of the car with nitrous because it was sprayed during gear shifts and thats not healthy for the tranny and the components related to the transmission! Rule of thumb is not to spray while the tranny is shifting

Former_Boosted_IS · 09-22-2010, 06:45 AM

Quote:

Originally Posted by techlogik

I would surmise that the Auto is stronger than the MT...

That is almost comical. The specs are available for both transmissions. It is very clear that the ZF Type G 6MT will be the strong one.

IlChengis · 09-22-2010, 09:51 AM

Quote:

Originally Posted by Imperator

Yeah, get a 6MT so you can better inspect the taillights of us with 6ATs and DCTs!

Hehe...

"Hey, look I am in a 747 holding the food tray like a steering wheel and mashing the foot rest with my feet. I have full control of this plane and I am faster than you! Brooom, Brooooom! Pew! Pew!"

--AT owner

-Walter

Imperator · 09-22-2010, 10:20 AM

"Hey, look at me! I'm in a rickshaw holding the reigns of my mule lured by a carrot suspended from this pole in my right hand. Sure, it might look a little antiquated and there are faster modes of transportation but I am the one with ultimate control! I know it looks strange but only purists understand! You shall *PAUSE* bask in the *PAUSE* glory of my authentic *PAUSE* experience!"

-MT owner

boostd92 · 09-22-2010, 10:31 AM

Quote:

Originally Posted by Matt@Camber-Toe

The transmissions in these cars are the same ones bolted behind the V8 in the Alpina B7. I dont think we have any worries.

This is not true. The N54 cars have a GA6HP19Z. It is the "low torque" version of the GA6HP26Z that comes in the Alpina B7.

IlChengis · 09-22-2010, 10:54 AM

Quote:

Originally Posted by Imperator

"Hey, look at me! I'm in a rickshaw holding the reigns of my mule lured by a carrot suspended from this pole in my right hand. Sure, it might look a little antiquated and there are faster modes of transportation but I am the one with ultimate control! I know it looks strange but only purists understand! You shall *PAUSE* bask in the *PAUSE* glory of my authentic *PAUSE* experience!"

-MT owner

This will always be the argument between my me and my old man and he uses the same exact words to define MT driving.

-Walter

09-20-2010, 10:49 PM	#1
DimSum Banned 202 Rep 2,740 Posts Drives: SLOW Join Date: May 2008 Location: LITTLEBIMMER.COM iTrader: (10)	N54 6AT threshold? Does anyone know what the threshold limit for the N54 6AT transmission is? Would DPs, FMIC and a V4 put a lot or too much strain on the 6AT in the 335i? How long and how much HP are these trannys built to handle? Please let me know, as I am very intrested in picking up a second hand 335i 6AT. Thanks in advance.
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09-20-2010, 10:50 PM	#2
NiVeDh Major General 422 Rep 8,003 Posts Drives: '08 E90 335i, '99 E36 M3 Join Date: Apr 2009 Location: Houston, TX & Atlanta, GA iTrader: (132) Garage List 2008 BMW 335i Sedan [8.66]	Get a 6MT man.
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09-20-2010, 10:54 PM	#3
dboonephs Private 0 Rep 69 Posts Drives: 07 E90 335i Join Date: Mar 2009 Location: VA iTrader: (2)	there are some AT guys pushing 430whp with no issues
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09-21-2010, 12:33 AM	#7
StartupJunkie First Lieutenant 30 Rep 314 Posts Drives: 07 BMW 335i Sedan+2 Baby Seats Join Date: Feb 2009 Location: SF South Bay Area, CA iTrader: (0)	Hi DimSum, I've been running at my power level since Feb 2010. I have had no problems with the 6AT, other than its BORING ... but the wife doesn't drive a manual. I'm not sure what country you are located in, but if they have a DCT available, I would get that instead. Junk __________________ 11.535@124.423mph (1.641 60') - AutoTune 7-27, Race+Meth, Best ET w/ only 80% throttle 1st and 2nd 11.647@121.356mph (1.590 60') - AutoTune (beta pre-5-15), Race Gas, No METH Perf Mods: Vishnu PROcede Rev3 v5, Vishnu PWM Meth Kit, AR Design DPs, AE Exhaust, Helix FMIC, Vishnu DCI, Forge DV, WaveTrac LSD (Best Trap - 124.665mph)
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09-21-2010, 03:24 PM	#11
techlogik Lieutenant Colonel 70 Rep 1,565 Posts Drives: 2020 M340i Dravit Grey Join Date: Dec 2006 Location: FL iTrader: (2)	I would surmise that the Auto is stronger than the MT... __________________ 2020 M340i: Dravit Grey Mettalic. Loaded.
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09-21-2010, 07:22 PM	#16
Brey335i Banned 113 Rep 4,771 Posts Drives: e46 ///M3 Join Date: Oct 2009 Location: Austin, TX iTrader: (11)	There are those running upgraded turbos on automatic transmissions with no problems at all. I don't think you need to be worried
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09-22-2010, 10:20 AM	#20
Imperator Major 54 Rep 1,175 Posts Drives: 2010 E92 335i Join Date: Mar 2010 Location: Plano, Texas iTrader: (8)	"Hey, look at me! I'm in a rickshaw holding the reigns of my mule lured by a carrot suspended from this pole in my right hand. Sure, it might look a little antiquated and there are faster modes of transportation but I am the one with ultimate control! I know it looks strange but only purists understand! You shall PAUSE bask in the PAUSE glory of my authentic PAUSE experience!" -MT owner
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