[e90AW335i]

Check this prior thread out....

http://www.e90post.com/forums/showthread.php?t=46224

[e90AW335i]

One more, so we can all understand better....

http://www.e90post.com/forums/showthread.php?t=39881

[e.n335]

Just cross-checked the 350 lbft torque @ wheels number with the Alpina's torque output. That's 6-7% more torque than the Alpina delivers. This number makes more and more sense to me ...

Originally Posted by shiv@vishnu

With v2, the user can dial in their own torque curve. Set to max (100%) and on 93oct, its possible to see over 400lbft of torque at the wheels on an otherwise stock 335. With the default settings (80-85%), expect to see output restricted to 370-380lbft. At 70-75%, you'll see approx 350lbft.

-shiv

According to Shiv's posting we can have very reliable ( my interpretation ) 80-85% PROcede V2 engine power output settings. Steptronic cars can reduce the output to 70-75% in the rpm ranges where 350 lbft torque @ wheels are exceeded ( IMO between ~2.500 to ~3.800 rpm approx. ).

This will give a very nice, flat torque curve .

- Eugen

[rideelement247]

Originally Posted by kyleh4852

I thought the transmission was the ZF HP21 TU......

Its ZF HP21.......theres no TU in it. BMW calls it the 6HP19 TU.
Not too sure if the 28 is actually used in our cars...its hard to tell tbh.

It is hard to believe the 335i has such a small capacity for torque, whereas the 335xi would produce more torque being a diesel engine.

Damn you BMW:mad:

[533ogetnom]

Originally Posted by rideelement247

The 28 has a capability of 515 ftlbs of torque...much better for our group...buuuuuuut the problem is how to find a shop, cost, and pracitcality of the issue.

lol thats not all you would have to worry about considering the gearing of that transmission

[ArmyBimmerDude]

Anyone ever ask what the max torque would be for the manual tranny?

[judec]

Originally Posted by rideelement247

It is hard to believe the 335i has such a small capacity for torque, whereas the 335xi would produce more torque being a diesel engine.

ehm, U possibly made a typo. the 335xi is a 4WD 335i, same gasoline twin-turbo engine U know. The sequential twin turbocharged diesel one is 335d and it has an absolutely different transmission. Well, it has to, it pushes 286HP/580Nm, the 335i step would be already torn to pieces...

[533ogetnom]

Originally Posted by ArmyBimmerDude

Anyone ever ask what the max torque would be for the manual tranny?

manual trannies dont really have any moving parts (in context) so no one really cares, they are way over engineered as theres not a substantial gain from not doing so, vs making them rock solid

[mesier1111]

Originally Posted by e.n335

I called ZF today and talked with a very friendly and competent ZF engineer. He told me that 350 lbft @ the wheels ( 530 nm crank ) would be a good and reliable number for the 335i AT ( ZF HP21 ). 380 lbft @ the wheels and more would be a very different story and he gave me a contact where to go to discuss about having my steptronic upgraded.

Now, Shiv, would it be possible to get a flat torque curve, max. 350 lbft tourqe @ the wheels V2 map from you still providing 380 - 400 hp crank top end power ?

Thank you.

Cheers
Eugen

Damn dude, now you are a sponsor? I remember when you were just a lowly member like me. You were always the most level headed guy on this forum, love reading your posts.


BTW, Thanks for the info!!!

[judec]

Well, after some research (google, e90post etc.) I found (unfortunately no news) that the 335i has the HP21 and the 335d has the HP28. Talking to a BMW mechanic he told me that there is a 99% possibility the two trannies are not directly interchangeable as at least the dimensions and bolts are not the same, but changing some of the inside could work with the right info and skills. Anyway he's experienced enough, but would never go into such a project voluntarily. Pussy!

Anyway, the good news is the HP21 is s/t like 20kg lighter. cool, isnt it?

[533ogetnom]

Originally Posted by judec

Well, after some research (google, e90post etc.) I found (unfortunately no news) that the 335i has the HP21 and the 335d has the HP28. Talking to a BMW mechanic he told me that there is a 99% possibility the two trannies are not directly interchangeable as at least the dimensions and bolts are not the same, but changing some of the inside could work with the right info and skills. Anyway he's experienced enough, but would never go into such a project voluntarily. Pussy!

Anyway, the good news is the HP21 is s/t like 20kg lighter. cool, isnt it?

you guys are insane (place holder)

why would you even THINK about switching the tranny to the 335d, nevermind the idea that the bolt patterns might be different or it might not be the same dimensions...

HELLO THINK ABOUT THE GEAR RATIOS

no oddence but im surprised the mechanic didnt laugh at you

[e90AW335i]

Originally Posted by 533ogetnom

you guys are insane (place holder)

why would you even THINK about switching the tranny to the 335d, nevermind the idea that the bolt patterns might be different or it might not be the same dimensions...

HELLO THINK ABOUT THE GEAR RATIOS

no oddence but im surprised the mechanic didnt laugh at you

Mechanics will probably laugh after giving us the bill when we blow up this tranny from to much torque.....Time will tell like everyone always says.....

[judec]

Oh, here we go again, Mr. ssA esiW.

No, he did not laff, we were talking, ppl are not really used to laff at me unlike I'm talking jokes. But in a mature discussion it does not happen often, cuz I dont really ask/say stupid things. It looks like the major differentiator between us, montego335.

I dont really have time to write U a transcription of our 45min. talking, neither will. Of course we were talking about gear ratios, TCU, TCU-ECU relations etc., maybe some stuff U dont even dream about. I just posted the outcome, sorry to disappoint U.

[533ogetnom]

Originally Posted by judec

Oh, here we go again, Mr. ssA esiW.

No, he did not laff, we were talking, ppl are not really used to laff at me unlike I'm talking jokes. But in a mature discussion it does not happen often, cuz I dont really ask/say stupid things. It looks like the major differentiator between us, montego335.

I dont really have time to write U a transcription of our 45min. talking, neither will. Of course we were talking about gear ratios, TCU, TCU-ECU relations etc., maybe some stuff U dont even dream about. I just posted the outcome, sorry to disappoint U.

you want to swap a gas tranny for a diesel tranny, and your primary concern was that it might not fit properly, if the shoe fits

and sorry i dont want your transcript, im not very interested in the conversation between two people who dont immediately realize that putting a diesel geared tranny into a gas powered car would immediately destroy any possible performance it may have

[MBMWTECH]

Originally Posted by Dascamel

So if I thrash my step tranny, how much does a new one cost )

Just a tidbit of info - in my experience bmw auto transmission are weak in general - usually only lasting about 60 to 80000 miles under normal driving conditions. Only time will tell how long our autos will last with the v2.

Im not tuning back at all - I will let you know how long it lasts

Just some info on automatic transmission:
Trans is $5252.77 Trans only
Installed is $ 7074.77

[ArmyBimmerDude]

Originally Posted by MBMWTECH

Just a tidbit of info - in my experience bmw auto transmission are weak in general - usually only lasting about 60 to 80000 miles under normal driving conditions. Only time will tell how long our autos will last with the v2.

Im not tuning back at all - I will let you know how long it lasts

Just some info on automatic transmission:
Trans is $5252.77 Trans only
Installed is $ 7074.77

[AR230WAKEBOARDER]

My M3 tranny was 9k installed when it went. So doesnt seem to bad.

[e.n335]

Hi,

No reason to panic, just a reason for a proper torque curve. V2 with the AT will still be very fast ...



- Eugen

[Cornhusker]

Originally Posted by MBMWTECH

Just a tidbit of info - in my experience bmw auto transmission are weak in general - usually only lasting about 60 to 80000 miles under normal driving conditions. Only time will tell how long our autos will last with the v2.

Im not tuning back at all - I will let you know how long it lasts

Just some info on automatic transmission:
Trans is $5252.77 Trans only
Installed is $ 7074.77

cheaper then I thought, thank god we have resonable prices, unlike fixing a porsche, ferrari, lambo, etc.

[judec]

Originally Posted by 533ogetnom

you want to swap a gas tranny for a diesel tranny, and your primary concern was that it might not fit properly, if the shoe fits

and sorry i dont want your transcript, im not very interested in the conversation between two people who dont immediately realize that putting a diesel geared tranny into a gas powered car would immediately destroy any possible performance it may have

Needless to say, it's not that difficult for anyone to see U have no idea what are U talking about. The 6HP28 is not a diesel tranny, I dunno where did U get that idea. It's a top notch tranny mounted to a diesel engine, that's a diference.

It was a theoretical discussion about swapping a 6HP21 for a 6HP28 (or some parts, based on Eugens info). First U have to know whether it is possible at all, than U can procede to further steps like dealing with gear ratios, compuers etc., but it's useless to tell U cuz U have no freakin' idea about the topic.

I'm not going to react to any of your further posts. Get adult, than get information, than we can talk. Howgh.

[533ogetnom]

Originally Posted by judec

Needless to say, it's not that difficult for anyone to see U have no idea what are U talking about. The 6HP28 is not a diesel tranny, I dunno where did U get that idea. It's a top notch tranny mounted to a diesel engine, that's a diference.

It was a theoretical discussion about swapping a 6HP21 for a 6HP28 (or some parts, based on Eugens info). First U have to know whether it is possible at all, than U can procede to further steps like dealing with gear ratios, compuers etc., but it's useless to tell U cuz U have no freakin' idea about the topic.

I'm not going to react to any of your further posts. Get adult, than get information, than we can talk. Howgh.

right having a 5:1 + first gear would go GREAT in the 335

[judec]