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Diff upgrade

 
Old 06-20-2018, 09:23 AM
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C63 s
Diff upgrade


Who has upgraded their diff and whatís available?
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Old 06-21-2018, 12:47 PM
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'10 C63
Out of curiosity, what are you looking to upgrade? Isn't the stock diff a clutch type LSD, and the S has a torque vectoring diff. And based on the power levels people are pushing, it doesn't sound like the diff is the weak link in the driveline.
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Old 06-21-2018, 03:11 PM
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No diff upgrades are available. Non-Sís (pre-2019 model year) get a mechanical diff while the Sís get an E-diff.

Iíve only heard of a few people that have busted their diffs, but they were all on upgraded turbos making big power. Also, MB has a recall for the ESP software to lessen the drivetrain shock to the diff because some have snapped it at a mounting point in slick weather (wheel hop).
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Old 06-21-2018, 09:59 PM
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Originally Posted by AlexZTuned View Post
No diff upgrades are available. Non-Sís (pre-2019 model year) get a mechanical diff while the Sís get an E-diff.

Iíve only heard of a few people that have busted their diffs, but they were all on upgraded turbos making big power. Also, MB has a recall for the ESP software to lessen the drivetrain shock to the diff because some have snapped it at a mounting point in slick weather (wheel hop).
Do you know what setups others had that had diff issues (not related to the software fix)? I've always wondered what the power/torque limit is on the stock diff.
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Old 06-21-2018, 10:30 PM
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2015 C63S , KW Has ,Kmac Bushings,BC Forged wheels,Gt Rotors w/ Porterfield R4S
I've been trying to find a different ratio for the rear diff as we only have a final drive ratio of 2.87 ....I think it's actually is slowing the car down in 1/4 mile performance and the AMG GT runs a final drive of 3.67 which would really make our cars considerably faster . I know ...what about wheel hop or traction ? Most modified high HP cars blow the tires off but thats the name of the game . I'm sure somewhere down the road some manufacture will offer a different ratio . Adding say the 3.67 would easily put you into the 10 second 1/4 mile range and possibly low 10's w/ a set of sticky tires and w/o a tune ....add a tune and exhaust Hello 9's

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Old 06-21-2018, 10:41 PM
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Originally Posted by msd3075 View Post
Do you know what setups others had that had diff issues (not related to the software fix)? I've always wondered what the power/torque limit is on the stock diff.
Two that I recall were making around 650whp and had drag radials on the rear. Running mid-10ís at around 131-133 mph. I think cutting a 1.5 60ft with drag radials on a sticky track may have had something to do with it.
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Old 06-21-2018, 11:16 PM
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Originally Posted by AlexZTuned View Post


Two that I recall were making around 650whp and had drag radials on the rear. Running mid-10ís at around 131-133 mph. I think cutting a 1.5 60ft with drag radials on a sticky track may have had something to do with it.
Wavetrac centre from w204 fit in housing
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Old 06-22-2018, 03:04 AM
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2016 C63 AMG Wagon
The final drive ratio on the Coupť is higher than the sedan/estate. That's how it's stated 0-100 time is 0.1 second faster than the sedan even thou it's heavier.

Have they changed the final drive on the 2019 now that it has the 9 speed?
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