Trouble finding B5 S4 gear ratios and final drive ratio. NE1 know off top of their head?
01-28-2004, 08:06 AM
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Trouble finding B5 S4 gear ratios and final drive ratio. NE1 know off top of their head?
I want to compare it to a car with a 4.38:1 first gear and 3.06:1 final drive ratio.
01-28-2004, 08:09 AM
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come on man, model guide section:)
Gear Ratios: Manual (Automatic)
1st 3.500:1 (3.665:1)
2nd 1.889:1 (1.999:1)
3rd 1.231:1 (1.407:1)
4th 0.967:1 (1.000:1)
5th 0.806:1 (0.742:1)
6th 0.684:1 (----)
Reverse 3.455:1 (4.096:1)
Final Drive 4.111:1 (3.511:1)
1st 3.500:1 (3.665:1)
2nd 1.889:1 (1.999:1)
3rd 1.231:1 (1.407:1)
4th 0.967:1 (1.000:1)
5th 0.806:1 (0.742:1)
6th 0.684:1 (----)
Reverse 3.455:1 (4.096:1)
Final Drive 4.111:1 (3.511:1)
01-28-2004, 08:12 AM
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no prob, i edited it to make it a little prettier and here's the link
<ul><li><a href="https://www.audiworld.com/model/s4/01/specs.shtml">https://www.audiworld.com/model/s4/01/specs.shtml</a</li></ul>
01-28-2004, 08:13 AM
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OK math question: if I want to find overall 1st gear ratio, I multiply the gear ratio x the final
drive ratio correct? If so I get 14.3885:1 for the manual S4 I am used to, and only 13.4028 for the SLK55. Does not sound promising, but maybe a taller first + torque convertor slippage makes sense with only 2WD. And if you compare it to the tip S4 which is 12.868:1 it looks aggressive.
01-28-2004, 08:15 AM
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yeah, a little taller first gear is a good thing, IMO. do a comparison of the autos.
3.665*3.551 for the s4 = 13.014415. so it shorter than a tip s4.
the slippage in the tc makes an the overall ratio a bit shorter anyway.
the slippage in the tc makes an the overall ratio a bit shorter anyway.
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01-28-2004, 08:18 AM
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yep - but like you mentioned, there's a fudge factor for manual vs. automatic.
i used to do a little rockcrawling/4wheeling and because of the slippage in an auto, you can always get away with running a little taller gear. i ran 4.56s in my jeep (manual) when auto guys would often run 3.73s or even stock 3.55s.
01-28-2004, 08:24 AM
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Here is the full list of the Merc auto ratios. I like that it is not 1:1 until 5th which is super-
tight ratio.
1st gear 4.38
2nd gear 2.86
3rd gear 1.92
4th gear 1.37
5th gear 1.00
6th gear 0.82
7th gear 0.73
Reverse gear 3.42
Final drive 3.06
1st gear 4.38
2nd gear 2.86
3rd gear 1.92
4th gear 1.37
5th gear 1.00
6th gear 0.82
7th gear 0.73
Reverse gear 3.42
Final drive 3.06
