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      04-16-2024, 01:44 PM   #1
mpower112
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M5 F10 Deka Clutch issue

Hi ,

I have M5 F10 , FBO , Forged engine , pure turbos stage 2

Around 7month ago i ordered Deka clutch stage 2
My garage installed it for me and after around 400km when i go back home from 30km trip i can't put R anymore it just trying to put R i hear loud knocking and trans go in N , i drive aroud town to check what happen and notice 1gear gonne as well so i back home and leave car to my garage next day , they dissassembly trans and found out the clutch is completly burned

In december contacted the shop with i buy the clutch i explained the whole situation and they ask me to send back the clutch to deka i sended the burned clutch and in february i get new clutch not just plates as previous but now with basket as well (many thanks to Deka and the shop)

Today i pick up the car with installed brand new clutch also i put stock map on the car to be sure nothing happen to clutch

My home and garage is 30km away mainly highway i drive allmost all the time around 140-160 but at somepoint i pass car and put a little more power like really not much and then i notice when it downshift it think a second and after it engage clutch properly and start to give power so thats was strange so i repeated it again but this time i drive around 120km and put some power the car drop the gear but still think engage the gear a little rpm rev and engage second time the gear but now properly and then the car start to have some power but after the second time i get error trans temp too high so i slowed down and stoped at next gas station it was around 5km

Checked codes i get
Clutch temp - phase red
Clutch temp - phase black

It was just 30km after installing new clutch

Any idea what can be wrong?
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      04-18-2024, 01:24 AM   #2
SmokinJoe
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Did they do a proper adaptation procedure when they installed the clutch?
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      04-18-2024, 04:37 AM   #3
mpower112
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Quote:
Originally Posted by SmokinJoe View Post
Did they do a proper adaptation procedure when they installed the clutch?
Yes , and it complete without trouble also they do oil balance

Car was changing gear fine in town driving , problem start on highway speed

I put BMS Oil pan for trans better cooling , is this can cause problems? Low oil pressure under load?
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      04-30-2024, 02:26 PM   #4
TinCanSailor
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Just had a similar issue with my S2 Deka Clutch driving from Tampa to Orlando. By the time I came to a stop and pulled in the driveway I only had 1st gear.
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      05-03-2024, 07:33 PM   #5
mpower112
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Im now after 400km

Upshift get better , little knocking but except that is fine

The issue is downshifting it feel like the clutch get engaged with delay and this cause slipping

I gonna make another 400km trans adapt and then will check how the clutch behave at WOT
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      05-14-2024, 06:54 PM   #6
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I had my car towed back to Midnite Tuning to let them spend some time with it. I was having issues with downshift, seemed to skip odd numbered gears, but was also having some hard upshifts and an awful sound which I think came from the transmission.

I don't think they have started any work on it yet and since I am out of town for work for a couple of months it isn't a must have priority for me.

Looking forward to hearing more about your progress. Have you had any custom tunes done for the engine or transmission?
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      05-15-2024, 09:12 AM   #7
mpower112
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Quote:
Originally Posted by TinCanSailor View Post
I had my car towed back to Midnite Tuning to let them spend some time with it. I was having issues with downshift, seemed to skip odd numbered gears, but was also having some hard upshifts and an awful sound which I think came from the transmission.

I don't think they have started any work on it yet and since I am out of town for work for a couple of months it isn't a must have priority for me.

Looking forward to hearing more about your progress. Have you had any custom tunes done for the engine or transmission?
From the time i install the clutch i drive it on stock map and no trans tune

Im now after 700km on the clutch and upshift improved , upshift on low speed is like stock but upshift on WOT sometime feel harder from stock but it improved a lot from installation time

The issue is on downshift , clutch look like slipping :

If on 5gear and drop it to 3 with accelerator pressed the clutch start to slip for a second untill it engage properly , it feel like there is delay in engaging the clutch , i drive with ISTA connected to check the clutch temperature and clutch overheat very fast if i downshift like this , is enough to repeat this 2 times and i get temp warning

But if on 5gear and downshift to 3 but when downshifted to 3 gear the accelerator is not pressed for around second it look like it have time to engage the clutch and then the slipp and overheat dont happen

Also i checked and overheat not happening on upshift only downshift


What clutch do you have? Any mods?
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