[W126 Coupe] Help! : diff ratio's

[Satish Tummala]

LSD diffs have a tag requiring special hypoid gear oil located on the
right lower corner of the rear case.

Most 560SECs had 2.47 diffs with LSD standard.  Some 560s with ASR had
2.65 rear ratios.

Most 500SECs had 2.24 diffs without LSD.



> Thanks Dawid.

> I have found that my 500 revs @ 2900rpm for 160Kph whereas the 560 I drove

> rev'ed at about 3200rpm at 160kph.

> The 500 is a real lazy low revving tourer.

> As I remember, the higher the ratio #, the higher the revs for the same

> speed.

> On Rally cars we were using a 5.3 diff to achieve more close ratio's thro

> the gears (as opposed to a std 4.6 diff)

> What # is on your 560 diff casing??

> Alec D.

>   ----- Original Message -----

>   From: Dawid Loubser

>   To: Mercedes Coupes Mailing Lists

>   Sent: Thursday, April 26, 2007 10:44 AM

>   Subject: Re: [W126 Coupe] Help! : diff ratio's

>

>

>   Hi Alec,

>

>

>   According to information I found searching the mailing list archives,

> the standard diff ratio of the 560SEC

>   is indeed 2.47. (Unless there's a difference between the US and European

> models, but there is not

>   as far as I am aware, especially if you've seen many 2.47 ones around

> here.)

>

>

>   I'm actually surprised that the 560SEC has a higher ratio (more RPM per

> km/h) than the 500SEC (at 2.24).

>   I would have imagined them making the 560 more of a relaxed,

> higher-top-speed cruiser, considering

>   the more powerful engine. On the other hand, maybe the 5.6L M117 engine

> has better high-revving

>   characteristics, as well as the fact that the top speed is already

> artificially limited to 250km/h (with some

>   RPM left if the limitation is removed).

>

>

>   But still, considering the Autobahn cruiser intent of the car, I'm

> surprised.

>

>

>   regards,

>   Dawid

>

>

>   P.S. Mailing list archive search:

> http://www.mercedes.cx/560SEC/archives/secq.html

>

>

>

>

>   On 26 Apr 2007, at 9:03 vm., Divov wrote:

>

>

>     Please could anyone tell me what the standard diff ratio is on a

> 560SEC.

>     This can easily be read off by looking at the diff from the rear and

> is stamped on the bottom left hand corner.

>     Help greatly appreciated.

>     (the 500SEC is 2.24)

>     Thanks

>     Alec D.

>     The MB Coupes Website!

>     W126 SEC Mailing List

>     Postings remain property of MB Coupes, L.L.C.

>

>

>

>

> ------------------------------------------------------------------------------

>

>

>   The MB Coupes Website!

>   W126 SEC Mailing List

>   Postings remain property of MB Coupes, L.L.C.The MB Coupes Website!

> W126 SEC Mailing List

> Postings remain property of MB Coupes, L.L.C.