W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Jerry's a beast, Eurocharged is where it's at, and gear swaps are doable!

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Old Nov 11, 2012 | 02:22 AM
  #26  
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Simple answer, shorter gears IE 3.55's Multiply Engine power/Torque to the wheels substationally.. (I went from 2.73's to 3.90's in my past C6 Vette w/Auto 4 speed = to 4.11's on 6 speed manual.. made HUGE difference in acceleration from dig & thru 2nd but absolutely killed Top-End)

Last edited by Thericker; Nov 11, 2012 at 02:31 AM.
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Old Nov 11, 2012 | 03:12 AM
  #27  
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I think we need some video of the gauges

I don't have much knowledge in rearends/gearing in cars, now if changing the gearing would you need a different LSD,? I have a Quife LSD and am not exactly sure what gets changed and what teeth hit what in there.

I have never messed with gearing in any cars but always have with motorcycles by changing sprocket sizes and that certainly made massive differences in acceleration.
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Old Nov 11, 2012 | 03:18 AM
  #28  
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You change the gears in the pumpkin, and usually you can buy them and just swap em out
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Old Nov 11, 2012 | 03:30 AM
  #29  
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I know that, but don't know what touches what in there. As in if this different gear ratio change would not bolt up with LSD or if these gears even touch it.

Last edited by urbamworm; Nov 14, 2012 at 02:55 AM.
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Old Nov 11, 2012 | 03:38 AM
  #30  
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https://mbworld.org/forums/w211-amg/225767-diy-quaife-install.html

This should help. When the diff is gutted you can see the pinion gear attached to the drive shaft. Then the ring gear, the big one in the next pics, is what's swapped with the pinion gear. Not swapped WITH, but both changed with new gears.
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Old Nov 11, 2012 | 03:46 AM
  #31  
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05 White Pano E55, Cadillac CTS-V
Gotcha.
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Old Nov 11, 2012 | 05:06 AM
  #32  
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gear swap with taller tigher will hit must harder off the line.
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Old Nov 11, 2012 | 05:12 AM
  #33  
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You mean shorter? No doubt, we have the torque to lengthen gears and launch but if the OP can find a way to hook with 3.55 gears, then well have a REAL gamechanger. Then there's always the Weistec route, but let's not open that can of whoop *** until we find out how the OP's car handles the gearing on the track.
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Old Nov 11, 2012 | 07:08 AM
  #34  
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Well with the higher gear you could run taller tires and fall back to a less aggressive ratio.
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Old Nov 11, 2012 | 12:03 PM
  #35  
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^^^ that's what you want. Taller tire means a bigger contact patch so better traction. Going from a 26" to 28" tire with the right gearing will make a significant difference in 60 foots.
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Old Nov 11, 2012 | 12:25 PM
  #36  
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Originally Posted by adianaty
^^^ that's what you want. Taller tire means a bigger contact patch so better traction. Going from a 26" to 28" tire with the right gearing will make a significant difference in 60 foots.
Yup, you are right.
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Old Nov 11, 2012 | 02:00 PM
  #37  
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Originally Posted by adianaty
^^^ that's what you want. Taller tire means a bigger contact patch so better traction. Going from a 26" to 28" tire with the right gearing will make a significant difference in 60 foots.
Great minds think alike
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Old Nov 11, 2012 | 02:12 PM
  #38  
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Originally Posted by suicidal4life
Thanks a million , now I understand all your excitement. lolol
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Old Nov 11, 2012 | 02:13 PM
  #39  
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Originally Posted by PACougar
You're inputting more power from the engine into 1 revolution of the tire. The same way pulleys allow you use less energy over a longer period of time to move the same amount of weight. Let's say your transmission is in 4th gear, that's 1 to 1 in our transmissions, on a stock car the engine is going to spin 2.65 times and the wheel is going to spin once, on mine the engine is going to spin 3.55 times and the wheel is going to spin once. You're engine obviously makes more power in 3.55 revolutions then it does in 2.65 revolutions, so you gain some mechanical power from the gears.
Thanks a lot man!
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Old Nov 12, 2012 | 05:11 AM
  #40  
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Yea Jerry did this on Clk55 before.

Can you get traction in first gear? I think 3.55 is too aggressive for a street car. High revs with a loud car on the highway would be super annoying. Did you had to shim the gears? I know it had to be done on the clk but we used a srt diff
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Old Nov 12, 2012 | 09:48 AM
  #41  
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Originally Posted by blackbenzz
Yea Jerry did this on Clk55 before.

Can you get traction in first gear? I think 3.55 is too aggressive for a street car. High revs with a loud car on the highway would be super annoying. Did you had to shim the gears? I know it had to be done on the clk but we used a srt diff
I couldn't use first gear before the swap on the street, so it doesn't make much difference, On the highway the revs are fine and the noise doesn't seem noticeable at all because of it. No shimming required.
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Old Nov 12, 2012 | 09:56 AM
  #42  
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Do you recall what the backlash was set at, this will be my next mod homey
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Old Nov 12, 2012 | 10:03 AM
  #43  
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Originally Posted by chawkins2001
Do you recall what the backlash was set at, this will be my next mod homey
I think around .008. It's been awhile so quote me on that.
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Old Nov 12, 2012 | 11:00 AM
  #44  
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That sounds about right, same as the backlash in the ford 8.8 rear end gears, nice and tight.

Are you on a 28" tire?
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Old Nov 12, 2012 | 09:06 PM
  #45  
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Did some calculations today, that 3.55 is crazy!!

Stock

1st = 52mph
2nd = 85mph
3rd = 132mph
4th = 187mph
5th = 225mph

3.55

1st = 39mph
2nd = 64mph
3rd = 99mph
4th = 139mph
5th = 168mph

168mph rev limited top speed!!

3.23

1st = 43mph
2nd = 70mph
3rd = 109mph
4th = 153mph
5th = 185mph

I think this is better...no need for 200mph top speed runs and 2nd gear isn't as short as 1st used to be unlike the 3.55 where 2nd gear is almost as short and the 2.65 1st.
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Old Nov 12, 2012 | 09:07 PM
  #46  
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Originally Posted by PACougar
The output of the transmission spins 3.55 time and the wheel will spin once. The stock is 2.65. The number has nothing to do whatsoever with how much horsepower the car can handle.



I'm running 265/40/18 MT ET Streets II and it doesn't spin any of second. Of course it's not comparable running even the best street tires to running MT's. The gears are made by Richmond Gears and they're for Chargers and Challengers that have a 215mm ring gear in the diff. You can get them for around 550.00 a set. They also make 3.23 if you want something less aggressive.

i have a cls55 an if stock is 2.65 i would luv to make this change
will we need re tuning for this



Liberty, S.C. - Richmond Gear announces the introduction of gear sets designed specifically for the new Dodge Challenger, Dodge Magnum, Dodge Charger and Chrysler 300. These new 215 mm gears are available in both 3.23 (49-0153-1) and 3.55 (49-0154-1) ratios.

Last edited by underdogg; Nov 12, 2012 at 09:09 PM.
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Old Nov 12, 2012 | 09:14 PM
  #47  
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Originally Posted by GT-ER
Did some calculations today, that 3.55 is crazy!!

Stock

1st = 52mph
2nd = 85mph
3rd = 132mph
4th = 187mph
5th = 225mph

3.55

1st = 39mph
2nd = 64mph
3rd = 99mph
4th = 139mph
5th = 168mph

168mph rev limited top speed!!

3.23

1st = 43mph
2nd = 70mph
3rd = 109mph
4th = 153mph
5th = 185mph

I think this is better...no need for 200mph top speed runs and 2nd gear isn't as short as 1st used to be unlike the 3.55 where 2nd gear is almost as short and the 2.65 1st.
which gear u like with your setup since u have a 178 pulley
3.23 is not that much different from 3.55 ..
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Old Nov 12, 2012 | 09:16 PM
  #48  
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Originally Posted by underdogg
which gear u like with your setup since u have a 178 pulley
3.23 is not that much different from 3.55 ..
The difference may not be huge but the 3.23 is already pushing it on aggressiveness so I'd choose that one.
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Old Nov 12, 2012 | 09:35 PM
  #49  
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Originally Posted by GT-ER
The difference may not be huge but the 3.23 is already pushing it on aggressiveness so I'd choose that one.
THATS WHAT I WAS THINKING TOO ..
WHERE CAN I GET A LSD FROM ??
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Old Nov 13, 2012 | 07:00 AM
  #50  
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Quaife makes some good diffs. Do a search, tons of info on it.
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