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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > 335d Gearbox Swap



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      10-04-2007, 06:59 AM   #1
DCMETRO22Z
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335d Gearbox Swap

since the 335D tranny is designed to sustain far more torque than the 335i one ,do you think its possible to swap the trannies if the 335i engine is heavily modified( procede + ic +intake + downpipes +exhaust) .Naturally i speak about steptronic.
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      10-04-2007, 07:38 AM   #2
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i thought about that too. but wouldn't the gear ratios be all different since the diesels dont rev as high?
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      10-04-2007, 09:21 AM   #3
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Quote:
Originally Posted by baggerben View Post
i thought about that too. but wouldn't the gear ratios be all different since the diesels dont rev as high?
yes,i hadent thought about that but you should be right
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      10-04-2007, 10:20 AM   #4
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I read somewhere that the bolt patterns to attach a tranny to the diesel engine and gasoline engine were different... not to mention all the electronic controls. It would not be a simple swap, and would require quite a bit of custom work to be performed.
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      10-04-2007, 05:14 PM   #5
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Swapping the complete gearbox is almost impossible. What is possible though is to use some of the internals from the 335d (ZF 6HP28) tranny to update some parts in the 335i tranny (ZF 6HP21). No further details yet, but U can try to ask Eugen. Check out this thread.
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      09-09-2011, 09:55 PM   #6
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Manual conversion

I know it isn't rated for the torque but what issues would I face in installing a manual in a 335d? Would it bolt in? What electrical issues?
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      09-10-2011, 12:24 PM   #7
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Quote:
Originally Posted by Dhake2 View Post
I know it isn't rated for the torque but what issues would I face in installing a manual in a 335d? Would it bolt in? What electrical issues?
Gear ratios would be off. Now I know a 335d was raced at daytona a couple of years ago but o don't know what granny was used. Email BMWCCA as the article appeared in Rounded.
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      08-29-2018, 08:12 PM   #8
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Was this ever accomplished?
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      08-30-2018, 05:09 AM   #9
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The m57 bellhousing is approximately 1” larger in diameter compared to the M5X transmissions and different bolt pattern compared to N52/4.
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      08-30-2018, 09:50 AM   #10
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Im wondering how is this possible, the original post date is - 2007???
North America yet to get the news on decision if we will actually get 335D or not!
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      08-30-2018, 12:08 PM   #11
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Quote:
Originally Posted by F32Fleet View Post
Gear ratios would be off. Now I know a 335d was raced at daytona a couple of years ago but o don't know what granny was used. Email BMWCCA as the article appeared in Rounded.
A manual conversion has been done successfully actually
About a year or so ago. The D transmission is from a 4.8 x5 with a different torque converter.
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      09-06-2018, 08:00 PM   #12
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Quote:
Originally Posted by 335dlci View Post
A manual conversion has been done successfully actually
About a year or so ago. The D transmission is from a 4.8 x5 with a different torque converter.
Do you have a link to where you saw this? I'd like to know.
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      09-06-2018, 08:40 PM   #13
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Matt Whitbread was working on using a 330d setup sourced from Europe. He has family and connections there to make it happen. Don’t hold me to it but I recall he gave a rough estimate of $3000 for the kit. The final combo between trans and the 330d diff was going to spin higher revs though.

Another guy named Grady did this to an E91 D and put roll cage and all in his track car.
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      09-06-2018, 10:47 PM   #14
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https://www.e90post.com/forums/showt...ht=335d+manual


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      11-29-2018, 11:31 PM   #15
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Quote:
Originally Posted by Maniac0908 View Post
Was this ever accomplished?
Yea it has i'v done it. there are 2 here in the uk that i know of, mine and 1 other. mine is a road car and my daily user the other is a track car.
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      11-30-2018, 12:51 AM   #16
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Quote:
Originally Posted by BB_cuda View Post
Matt Whitbread was working on using a 330d setup sourced from Europe. He has family and connections there to make it happen. Don’t hold me to it but I recall he gave a rough estimate of $3000 for the kit. The final combo between trans and the 330d diff was going to spin higher revs though.

Another guy named Grady did this to an E91 D and put roll cage and all in his track car.
If you use the 330 or 325d diff it gives you the correct gearing overall, 40mph per 1000rpm in 6th gear, the 335d diff is 2,81 and makes 1st and 2nd gear useless in this conversion, the 330d diff is 2.35 and is spot on for this conversion, the 335i box is not the one to use, you need the 6 speed pre stop/start box from a 330d.

Last edited by RS DAVE; 11-30-2018 at 12:56 AM..
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