W210 E290TD final drive ratio
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W210 E290TD final drive ratio
Hello everyone, I've tried looking up the final drive ratio for the E290TD 5-speed manual but to no avail.
I hate having an open diff, the area I live in is rough enough that i need a locking diff but I need the final drive ratio to find a suitable diff.
Thanks in advance😀
I hate having an open diff, the area I live in is rough enough that i need a locking diff but I need the final drive ratio to find a suitable diff.
Thanks in advance😀
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Joined: Jun 2021
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
I don't think that will give you the correct answer, at least no directly. I'm reaching farther back than I really remember, but, the wheel turns the side gear, which turns the spider gears which turn the ring gear which turns the pinion and drive shaft. It sticks in my mind that you have to turn the wheel two revolutions, but I could be wrong...
MBWorld Fanatic!
Joined: Jun 2021
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
On older RWD cars the ratio is stamped on the rear lower left ear of the diff housing where the rear cover meets the housing.
Last edited by John CC; Jan 10, 2025 at 06:30 PM.
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From: Allentown, PA
'08 GL 320 CDI
Thanks John - I don't know the answer - just that I "thought" it was roughly the process?
I guess it wouldn't be all that difficult to mark the driveshaft with a white line and have someone roll (or very slowly drive) the car (NOT jacked up) while another person laid down and observed the driveshaft for one tire revolution? Then, since this is a car, you'd probably need to jack it up (without) moving the wheels to cound the final last rotation of the driveshaft if it wasn't visible... or maybe just a mirror on a stick?
Just trying think about a way to do this that would definitely tell the ratio instead of relying on the internet.....
I guess it wouldn't be all that difficult to mark the driveshaft with a white line and have someone roll (or very slowly drive) the car (NOT jacked up) while another person laid down and observed the driveshaft for one tire revolution? Then, since this is a car, you'd probably need to jack it up (without) moving the wheels to cound the final last rotation of the driveshaft if it wasn't visible... or maybe just a mirror on a stick?
Just trying think about a way to do this that would definitely tell the ratio instead of relying on the internet.....
MBWorld Fanatic!
Joined: Jun 2021
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
It's going to be either half or double, so only one answer will make sense. My head hurts, but, I think, if you spin the wheel one time the driveshaft will turn half as many times as it would if both wheels were turning the speed (no differential effect.) So, if one revolution of the wheel gives you 2 turns of the drive shaft then it's a 4:1 ratio. I think...
