12-04-2020, 03:29 AM | #1 |
Built Motor F30 340i
403
Rep 257
Posts |
Blew up 340i (HP50) Transmission
Went to do some 0-60 and 1/4 times tonight and blew up the transmission (ZF8HP50) in my 340i. My main course of action now is doing a HP70 swap into the 340i out of a 535d. I will be fully documenting the swap and posting it here on F30Post as well as B58 Enthusiasts Facebook page. Luckily another user here has already done the swap and also documented it decently well (https://f30.bimmerpost.com/forums/sh....php?t=1663852).
Mods: Pure800, Dorch Stage 2 HPFP, VRSF 4.5" Downpipe, Remus Axleback, Wedge E50 MHD Tune (29psi Boost / 18° Timing). Estimated Power: 650-680whp. 60-130 Time: 6.76s View post on imgur.com
__________________
|
12-04-2020, 07:31 PM | #6 | ||
Built Motor F30 340i
403
Rep 257
Posts |
Quote:
Quote:
Going to be buying it used. Found one with very low miles (8k miles).
__________________
|
||
Appreciate
0
|
12-04-2020, 09:16 PM | #7 |
Major
809
Rep 1,369
Posts |
We play and we pay. It was a good death.
__________________
2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ DAW Ultra Flow/ DS2/ Nostrum injectors/ E40 Doug Newton tuned/ ER DP/ Remus axle back/ BMS intake/ FTP CP/ M Perf LSD
|
Appreciate
4
|
12-05-2020, 08:51 AM | #8 |
Colonel
1077
Rep 2,357
Posts |
Sorry to hear about the failure. Limited torque in 3rd and 6th or full send?
Must be at double the rated torque with those numbers.
__________________
M135i 8AT PWG, MHD, Pure Stage2, WMI via Torqbyte CM5-LT, Custom tuned by PureBoost
(A Dane in China) |
Appreciate
0
|
12-05-2020, 03:32 PM | #9 |
Private First Class
86
Rep 154
Posts |
|
Appreciate
0
|
12-05-2020, 10:32 PM | #10 | |
Private First Class
45
Rep 140
Posts |
Quote:
Andre was pushing at least high 700s - low 800s for a while on stock zf8hp50 before his went out. Seems Michael just has really bad luck with his car lol. (Jk man, appreciate you pushing the limits! )
__________________
2016 340i x-drive M-sport fully loaded. Pure800, Spool fx-150/ethanol analyzer/filter, VRSF catless dp, dinan mid pipe, MST intake, f80paul 93 tune via BM3, XHP, KW Street Comfort, f80 513M with square Michelin as3+ 255/40r18, carbon fiber rear trunk lip, black double slat grill, M-performance interior trim, smoke bumper reflectors.
|
|
Appreciate
1
Jay5k86.00 |
12-06-2020, 01:32 AM | #11 |
Major
811
Rep 1,452
Posts |
Was a Pure tranny not an option? B58 King had his trans upgraded by Pure Drivetrain Solutions, cuz mans was pushing 800+ lb-ft lol.
__________________
2022 CT4-V Blackwing 6-speed
SOLD: 2016 340i xDrive 6-speed DAW v2.5 turbo E40 | Dorch S2 | VRSF DP | MST intake | AWE catback | 335is clutch | CSF heat exchanger | RK Autowerks intake manifold | Orange M Perf Brake Kit | KW Street Comfort coilovers | GTS taillights V2 |
Appreciate
0
|
12-06-2020, 01:40 AM | #12 | |
Built Motor F30 340i
403
Rep 257
Posts |
Quote:
Even with the discount they offered me it's still more than i'm willing to spend right now. HP70 should be more than adequate for the time being.
__________________
|
|
Appreciate
1
G.Newt810.50 |
12-07-2020, 07:30 AM | #14 |
Second Lieutenant
112
Rep 216
Posts |
now I know the 70 is built to handle more power than the 50 but if there is no tune for the 70 wouldn't you be running the same risk? You'll definitely be well over stock power levels for the 70 and have slower shift times than a tuned 50.
|
Appreciate
0
|
12-07-2020, 08:53 AM | #15 | |
Colonel
2070
Rep 2,639
Posts |
Quote:
__________________
Bootmod3, CTS Catless DP, B58TU HPFP, XHP, BM3 Flexfuel Kit
|
|
Appreciate
0
|
12-08-2020, 08:49 AM | #16 |
Private First Class
68
Rep 180
Posts |
*GC+ he had the big boy. Vargas did give him that turbo for testing purposes mainly to push it to the limit and find out its max potential.
__________________
AFE Filter | BMS Intake Pipe
CTS DP | CTS CP | CTS Heat Exchanger PTP Turbo Blanket | AEM WMI Kit | Custom Exhaust PJ ACN91 + Meth tune| XHP Stage 3 |
Appreciate
0
|
12-08-2020, 12:17 PM | #17 |
Private First Class
99
Rep 179
Posts |
My transmission is still hanging in there, but has anyone else snapped a diff bolt? Im on my 3rd one...
When I say snapped, yes I literally mean sheared right at the diff/mount point. For reference im running 340i FBO w/ GC currently, dyno 572tq |
Appreciate
0
|
12-08-2020, 12:23 PM | #18 |
Second Lieutenant
112
Rep 216
Posts |
Not a common problem from what I've heard. You doing some hard launches on a regular basis? What conditions are you in where the bolt breaks?
|
Appreciate
0
|
12-08-2020, 01:22 PM | #19 |
Private First Class
99
Rep 179
Posts |
Not really. Both breaks have been under normal driving, however I do use my powerband to its fullest on a semi regular basis.
|
Appreciate
0
|
12-08-2020, 04:03 PM | #20 |
Built Motor F30 340i
403
Rep 257
Posts |
XHP has since been made available since the last HP70 swap writeup was done.
__________________
|
Appreciate
2
TheFanatic112.00 440MIA22.50 |
12-08-2020, 06:01 PM | #21 |
Private
21
Rep 84
Posts |
29 psi of boost I wouldn't do a dig and even if I would I'd be in 2nd at least. I'm on 32 psi and break loose in 2nd all the time I try to stay away from 1-2nd gear pulls because you already know the trans will break
|
Appreciate
0
|
12-08-2020, 07:04 PM | #22 |
Second Lieutenant
112
Rep 216
Posts |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|