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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Power Handling of the 335i



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      12-21-2006, 09:25 PM   #1
BizKid
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Power Handling of the 335i

Well guys i would like to introduce myself, my name is Kevin and im from the currently cold as balls state of CT. i have been watching the release of the 35i and im pretty set on turning to the dark side and trading in my is300. im loving the power coming out of this car from just minor upgrades. im a top notch fabricator with countless hours of time under the hood of some of CT fastests hondas and lexus's, supras and the latter.. and cannot wait to get my hands on this new platform. i do have a few questions for those of you already modding, what is the power handling of the 6spd manual tranny/ clutch set up, and whats the block going to take in this thing? i mean am i going to have to rip apart a brand new motor to get the power levels i want? Well, hope all is well in modding and i cannot wait to share my experences with all you in hopes we both learn on this new platform. i plan on taking a ride to BMW once i finish the moving of my business into my new office.
thanks again
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      12-21-2006, 10:07 PM   #2
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no one?
what about LSD? i cannot belive BMW produced a turbo car in the 300hp range with a 1 legger! are their LSD upgrades??
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      12-21-2006, 10:08 PM   #3
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Quote:
Originally Posted by BizKid
what is the power handling of the 6spd manual tranny/ clutch set up, and whats the block going to take in this thing? i mean am i going to have to rip apart a brand new motor to get the power levels i want?
Kevin.
The tranny will handle 432hp.
The block will go to 497hp.

Kidding of course as no one knows at this point. Welcome to the club!
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      12-21-2006, 10:25 PM   #4
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haha yah i guess its kinda early to tell huh lol. compared to your is350 how does the 335i hold up?
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      12-21-2006, 10:43 PM   #5
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Quote:
Originally Posted by Weedo
The tranny will handle 432hp.
The block will go to 497hp.

Kidding of course as no one knows at this point. Welcome to the club!
o man i was going to flame you so bad i thought you were serious
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      12-22-2006, 02:37 AM   #6
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we had some lsd discussion at this forum, I want one too.

www.drexler-motorsport.com
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      12-22-2006, 06:34 AM   #7
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i dont know how well an lsd is going to go in and interact with the dsc and traction control, im pretty sure they would get all screwy
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      12-22-2006, 06:56 AM   #8
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I can tell you the 335i uses the ZF type g transmission, which is the same as in the 650 and M5/M6, It is a very strong 'box. Ask ZF how much torque it can take. The block is probably fairly strong given its modern design, but the high comp. ratio will cause big problems with high boost. Diferent pistons will help, or perhaps the old cylinder head spacer or thick copper gasket will do.
The direct injection is a bit complicated, with up to 3 injections per firing event, but the high maximum fuel system pressure should leave scope for lots of increase in fuel volume.
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      12-22-2006, 10:05 AM   #9
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Quote:
Originally Posted by teknochild
i dont know how well an lsd is going to go in and interact with the dsc and traction control, im pretty sure they would get all screwy
You have a point here, the DTC/DSC interacts faster than without a lsd( on my friend's 130i M with Drexler lsd), but when you shut off the DTC/DSC it's so fantastic, just like the e46 M3 lsd(0-100% lock)
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      12-22-2006, 10:09 AM   #10
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im curious to see if the E92 M3 LSD will work with the 335i
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      12-22-2006, 10:29 AM   #11
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Quote:
Originally Posted by Robin Hood
You have a point here, the DTC/DSC interacts faster than without a lsd( on my friend's 130i M with Drexler lsd), but when you shut off the DTC/DSC it's so fantastic, just like the e46 M3 lsd(0-100% lock)
That's because there's no wheel spin, thus DTC/DSC does not have to kick in.
I can't seem any reasons why the LSD would screw anything up. If anything, it would cause the system to have to kick in less.
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      12-22-2006, 10:35 AM   #12
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Quote:
Originally Posted by shingles
That's because there's no wheel spin, thus DTC/DSC does not have to kick in.
I can't seem any reasons why the LSD would screw anything up. If anything, it would cause the system to have to kick in less.
no you have to remember these are preprogramed things, if your car does this and the system does that it expects a certain thing to occur, an lsd will interfere with the cahin of events, possibly confuse the system and make it freak out
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      12-22-2006, 02:53 PM   #13
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What do you have in mind for power goals? I do nto think this motor is a Supra motor that will take 650+ WHP. But if you are looking for a solid platform that will make around 400, I think this is the right ride for you.
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      12-22-2006, 04:33 PM   #14
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Quote:
Originally Posted by BizKid
haha yah i guess its kinda early to tell huh lol. compared to your is350 how does the 335i hold up?
That's an easy one as for preference. But I paid $33,490 for the IS350 brand new and I paid around $44,000 for the 335i. So there's a $10,000 difference between the two. Money no object the 335i is a far superior car. But I know many people would rather save $10,000 and take the Lexus. As for me? I "hand-me-down'd" the IS350 to my wife!
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      12-23-2006, 01:47 PM   #15
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Quote:
Originally Posted by Scotts335i
What do you have in mind for power goals? I do nto think this motor is a Supra motor that will take 650+ WHP. But if you are looking for a solid platform that will make around 400, I think this is the right ride for you.
Well taking into consideration the power numbers being drawn from the M3 at hpfreaks, they are getting over 600 rwhp and 800 at the crank, with stock block, compression and exaust at a mere 13psi.. i can only expect BMW to over engeneer this 335i just for the sake of being thier first boosted application. if the claims of having a transmission with same box as the m6 its probibly safe to say that the trasmission for the most part will not over excede to any great extent the capabilities of the power the engine can produce/handle, thats like building a balsa boat with a 400hp outboard, why give it the power handling potential bolted to a shitty/weak foundation. besides its expensive lol

id be happy with 475 to 525 and a lsd upgrade
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      12-23-2006, 11:55 PM   #16
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I think that will take a new set of turbos, headers, down pipe, intercooler....
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      12-24-2006, 09:18 AM   #17
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id say based on past exerience turbos this size can sustain 8-10psi each, with a maximum 20psi on tap. i belive with this compression ratio and a nice meth/water injection kit, sub 500 will be within reach. im hopeing that someone will throw out a single upgrade manifold, altho the instant boost is nice, correctly sized dual ball bearing turbos are able to produce the same pressures just as fast with more power potential. as for headers and down pipe, im going to have to wait for the after market industury to put those out cause frankly fabricating those things sucks. first thing im going to do is rip out that plastic tanked intercooler and fab out a custom hard pipe FMIC setup.
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      12-29-2006, 11:26 PM   #18
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Quote:
Originally Posted by teknochild
no you have to remember these are preprogramed things, if your car does this and the system does that it expects a certain thing to occur, an lsd will interfere with the cahin of events, possibly confuse the system and make it freak out
I agree, and this is what I 'm told by other people too, anyway.
Standard-lock clutch LSDs will not cooperate smoothly with the DTC/DSC on.

M-car differentials won't fit other BMWs, since they are controlled by the respective ECUs. So they 're not a solution, either.

The best solution must be Torsen (torque-sensing) differentials, such as the "automatic torque biasing" ones, designed by Quaife. They 're much more flexible and adaptive.

@Robin Hood: What type of LSDiffs does Drexler produce?

PS: I want that car (335) very badly, but will not order one, till we solve this problem! If we don't, I guess I 'll have to settle for a used e46 M3!
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      12-30-2006, 12:40 AM   #19
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yea, dont forget to the dsc can and will apply brakes one at a time, imagine if it needs to correct with only one of the rear wheel, your ass is toast
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      12-30-2006, 05:31 AM   #20
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Quote:
Originally Posted by teknochild
yea, dont forget to the dsc can and will apply brakes one at a time, imagine if it needs to correct with only one of the rear wheel, your ass is toast
This is a very good point which anyone wishing to add an LSD of any sort needs to consider.
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      01-14-2007, 04:30 PM   #21
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Did you guys try www.diffsonline.com yet?

They/bimmerworld built the rear ends for the 25 hr thunderhill race (335Ds)

http://www.caranddriver.com/features...-update-1.html
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      01-14-2007, 04:36 PM   #22
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Quote:
Originally Posted by Coyot
I agree, and this is what I 'm told by other people too, anyway.
Standard-lock clutch LSDs will not cooperate smoothly with the DTC/DSC on.

M-car differentials won't fit other BMWs, since they are controlled by the respective ECUs. So they 're not a solution, either.

The best solution must be Torsen (torque-sensing) differentials, such as the "automatic torque biasing" ones, designed by Quaife. They 're much more flexible and adaptive.

@Robin Hood: What type of LSDiffs does Drexler produce?

PS: I want that car (335) very badly, but will not order one, till we solve this problem! If we don't, I guess I 'll have to settle for a used e46 M3!

The M diffs are NOT ecu controlled. They just dont fit. The rear subframes are usually M specific. Who knows what the new E9x/M3 is going to use. The current M diffs use clutches. there is a viscous sheer pump that increases pressure on the clutches durring slippage.

I have a static lock/ramped clutch LSD in my ZHP, and it does not interfere with DSC.

The ramped clutch LSDs offer varying lockup like the quaifes, and are proven in the racing industry. The difference is static lock which can be customized.
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