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      01-21-2021, 04:31 PM   #1
msk340i
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Transmission Upgrade?

So my transmission died and now I have to either replace it or rebuild it. If I rebuild it can the clutch packs be upgraded? If I change it, is there a direct fit replacement that can handle more abuse? It’s a 340i so it’s a 8hp50
Thanks

Last edited by msk340i; 01-21-2021 at 04:36 PM..
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      01-21-2021, 05:05 PM   #2
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Quote:
Originally Posted by msk340i View Post
So my transmission died and now I have to either replace it or rebuild it. If I rebuild it can the clutch packs be upgraded? If I change it, is there a direct fit replacement that can handle more abuse? It’s a 340i so it’s a 8hp50
Thanks
Damn sorry to hear that, HP70 is becoming a common and cost effective replacement, might be worth thinking about
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      01-21-2021, 05:05 PM   #3
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Originally Posted by pwaf13 View Post
Damn sorry to hear that, HP70 is becoming a common and cost effective replacement, might be worth thinking about
Is itA direct fit?
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      01-21-2021, 05:19 PM   #4
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Do you know how it died? What stg XHP tune were you running and how much power were you putting down?

There's 2 details threads in this forum on swapping over the HP70, not a full direct fit - requires some modifications/different flywheel and some recoding of the ECUs but certainly do-able.
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      01-21-2021, 05:23 PM   #5
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Quote:
Originally Posted by msk340i View Post
Quote:
Originally Posted by pwaf13 View Post
Damn sorry to hear that, HP70 is becoming a common and cost effective replacement, might be worth thinking about
Is itA direct fit?
Not really, but adds a lot of strength https://f30.bimmerpost.com/forums/sh....php?t=1785998
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      01-21-2021, 05:36 PM   #6
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Quote:
Originally Posted by tallestmex View Post
Do you know how it died? What stg XHP tune were you running and how much power were you putting down?

There's 2 details threads in this forum on swapping over the HP70, not a full direct fit - requires some modifications/different flywheel and some recoding of the ECUs but certainly do-able.
I think my mistake was not flashing xHP. Idk how much power it was only a stage 2 bm3.
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      01-21-2021, 06:29 PM   #7
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These guys have been doing good work...it's not cheap though. Chris Miller on Facebook is contact

https://www.puredrivetrainsolutions.com/zf-8p
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      01-21-2021, 06:37 PM   #8
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These guys have been doing good work...it's not cheap though. Chris Miller on Facebook is contact

https://www.puredrivetrainsolutions.com/zf-8p
$5,999?!?!?!!!!?!!?!!?!!
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      01-21-2021, 10:20 PM   #9
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Originally Posted by msk340i View Post
$5,999?!?!?!!!!?!!?!!?!!
*$6,999 with their torque converter, which you probably want.
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      01-22-2021, 12:33 AM   #10
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Check these guys out. I know it says Supra, but should be the same trans. Much more affordable
https://www.jackstransmissions.com/t...supra-services
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      01-22-2021, 09:15 AM   #11
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Quote:
Originally Posted by msk340i View Post
$5,999?!?!?!!!!?!!?!!?!!
Yeah...pay to play. 8HP70 is another option. The reality tho is that your stock trans should be able to handle stage 2.
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      01-22-2021, 09:46 AM   #12
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the pure drivetrain transmission costs alot but can handle a ton of hp. their stage 2 guys are regularly launching near 1000hp with no issues
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      01-24-2021, 08:29 AM   #13
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Does anyone know of the clutch packs from a Supra transmission (51) fits the 50?
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      01-24-2021, 05:31 PM   #14
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Quote:
Originally Posted by msk340i View Post
Does anyone know of the clutch packs from a Supra transmission (51) fits the 50?
I sent an email to jacks transmissions to see if their rebuild is compatible. If it is I'm sure that will be because the clutch.packs are interchangeable. Ill update when I hear back from them.
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      01-25-2021, 11:57 AM   #15
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Originally Posted by ///Madgreek1 View Post
I sent an email to jacks transmissions to see if their rebuild is compatible. If it is I'm sure that will be because the clutch.packs are interchangeable. Ill update when I hear back from them.
I appreciate your help. Thank you
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      01-25-2021, 12:03 PM   #16
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https://www.ebay.com/itm/Automatic-T....m46890.l49292

Is this the “upgrade”?
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      01-25-2021, 12:12 PM   #17
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https://f30.bimmerpost.com/forums/sh....php?t=1785998
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      01-25-2021, 12:24 PM   #18
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Originally Posted by weehe126 View Post
Do you know of any of those fit my car? Thanks

https://www.ebay.com/itm/8-Speed-Aut....m46890.l49292

https://www.ebay.com/itm/8-Speed-Aut....m46890.l49292

https://www.ebay.com/itm/8-Speed-Auo....m46890.l49292
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      01-25-2021, 05:16 PM   #19
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Would be better to ask the person that did the swap.
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      01-25-2021, 07:19 PM   #20
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Quote:
Originally Posted by msk340i View Post
This box will not work. She is from V8.
You need from N57. From diesel engine 3.0l. 330D, 335D, 430D, 435D, 530D, 535D. F body.
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      01-25-2021, 07:21 PM   #21
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This one fits.
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xHP stage 3. CSF. Dorch 2. 100ron+30%E85,+WMI. 1620kg. 1/4ml 10.50s. 100/200 5.91s +8C.
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      01-25-2021, 10:14 PM   #22
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This one fits.
Which one?
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