SEC & LSD

1979-1991 280SE, 300SE, 300SEL, 380SE, 380SEL, 380SEC, 420SE, 420SEL, 420SEC, 500SE, 500SEL, 500SEC, 560SEL, 560SEC
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OzBenzHead
300 SLR
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Model you own: w126
Location: Byron Shire, Northern NSW, Australia

SEC & LSD

Post by OzBenzHead » Tue 23 Jan, 2018 2:34 pm

Was there an LSD (not the drug!) option for the 500 SEC 2.24 mechanical anti-squat diff?
OzBenzHead
Currently owned:
1965 W112 300 SE/C
1983 C126 380 SEC

and formerly:
1955 W180 220a
1965 W111 220 S
1970 W108 280 SE (my first Benz)
1973 W116 280 SE Crayford Estate (previously owned by Rolf Harris)
1980 W116 280 SE
1989 W124 300 E
1992 W201 180 E
1992 W201 190 E 2.0
+ numerous W108 and W116 rolling spares

and prior to my M-B enlightenment:
53 other cars of many nations, but mostly British oil-leakers (including 14 Rovers of the 50s and 60s) cursed by Lucas the Prince of Darkness. First car owned (at age 13): 1953 Fiat. Learned to drive in: 1927 Nash utility paddock-basher & Grey Fergie tractor. Driven distance (logged as at 30 June 2016): 4.6 million km.

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T-Modell
SLS AMG
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Model you own: w107
Location: Weinheim / Germany
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Re: SEC & LSD

Post by T-Modell » Tue 23 Jan, 2018 5:52 pm

Hi,
I'm pretty sure, as my R107 500SL has it (2.24) ...
Regards
Thomas
---------------------------------------------------------------
1967 W111 250SE Cabriolet, horizon blue
1973 W115 220D 5.0 Pick-Up Argentina, work in progress 2017/18/19
1986 R107 500SL, arctic white, the midlife crisis viagra replacement
2007 R171 SLK350, calcit white
2008 S211 E63T, calcit white, sleeper

hents99
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Re: SEC & LSD

Post by hents99 » Tue 23 Jan, 2018 6:27 pm

Yes. Usually if it’s not ASR it’s LSD then.
I have seen open diffs but to me it’s rare find.

LSD=ASD (asd has extra hydraulic pressure for 100% lock up if needed.
Inside is the same. 10pcs of friction discs.

Here’s w124 300-24 asd rear diff. W126 has same diff except the housing.
8EA62DD8-88F5-4756-9CE1-D3DC1582C192.jpeg
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560SEC, C55, W201 (2.3-16T + 2.5-16)

Honey500
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Re: SEC & LSD

Post by Honey500 » Wed 24 Jan, 2018 3:11 pm

Hi OBH,

My 500SEC (85) has one. It has the option code for an LSD. Can't remember the ratio, CraigB found it printed on the diff it is certainly 2 .something. It was certainly available at the time, not sure how common it is.
It is easier to ask forgiveness than it is to ask for permission!

1985 500sec aka Sadie (current project)

hents99
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Re: SEC & LSD

Post by hents99 » Wed 24 Jan, 2018 7:36 pm

Diff ratio is nothing to do with lsd option.
500 - 2.24
420 - 2.42
560 - 2.65
All ratios could be with LSD/ASR or open diff as well.

If not asr(snow chain button in dash) then look at differetial rear cover. If there is small metal plate under 2 bolts(or one sometimes) bottom right side (sperr differential) then its LSD.

Image
560SEC, C55, W201 (2.3-16T + 2.5-16)

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kimrh
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Re: SEC & LSD

Post by kimrh » Thu 25 Jan, 2018 2:17 am

All Aussie delivered Gen2 560's came with 2.47 ratio in ASR or LSD
Only private import Euro 300hp 560's came with 2.65LSD as most were out of HK as RHD (some from UK or Japan or S/Africa)
87 White Euro 500SEC "ECE" 195kw
88 Black Euro 560SEC 220kw
89 Midnight Blue Euro 560SEL hydro 220kw AMG Kitted
http://www.flickr.com/photos/krh2013/sets/72157632548663623/
https://www.flickr.com/photos/krh2013/albums/72157668572599252

CraigB
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Re: SEC & LSD

Post by CraigB » Thu 25 Jan, 2018 5:23 pm

Yep, I have never seen a gen 1 500 without 2.24 LSD.

Were you thinking of fitting one to your 380? Its a really tall diff and I would be concerned about what it would do for performance and even economy. Personally i think it is too tall even for the 500 and the 2.47 of later 500/560 a much better ratio. 2.65 gives that extra performance though as fitted to the hi comp 560. But then there are other tricks putting gen 2 ratio into gen 1.... do a search, lots of discussion on that!
Craig Baulderstone
Lurch
280s's
280SE3.5
280SL
350SL
500SEC's
560SEL's

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OzBenzHead
300 SLR
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Re: SEC & LSD

Post by OzBenzHead » Mon 29 Jan, 2018 12:39 pm

Thanks, Gents, for the replies.

I haven't yet been able to crawl under the donor vehicle to check for the LSD markings (it's in a close-packed scrum of cars), but am hoping it is. It's part of a complete 500 drivetrain that I'm considering. My 380 has LSD 2.47, and I'd rather not sacrifice the limited-slip facility if I don't have to.

Cheers :-)
OzBenzHead
Currently owned:
1965 W112 300 SE/C
1983 C126 380 SEC

and formerly:
1955 W180 220a
1965 W111 220 S
1970 W108 280 SE (my first Benz)
1973 W116 280 SE Crayford Estate (previously owned by Rolf Harris)
1980 W116 280 SE
1989 W124 300 E
1992 W201 180 E
1992 W201 190 E 2.0
+ numerous W108 and W116 rolling spares

and prior to my M-B enlightenment:
53 other cars of many nations, but mostly British oil-leakers (including 14 Rovers of the 50s and 60s) cursed by Lucas the Prince of Darkness. First car owned (at age 13): 1953 Fiat. Learned to drive in: 1927 Nash utility paddock-basher & Grey Fergie tractor. Driven distance (logged as at 30 June 2016): 4.6 million km.

CraigB
OZBENZ Admin
Posts: 4808
Joined: Thu 23 Jun, 2005 2:18 pm
Model you own: I own multiple different models
Location: Hawthorndene (Adelaide)

Re: SEC & LSD

Post by CraigB » Mon 29 Jan, 2018 5:15 pm

even if you went with 500 motor/trans, I would definitely stick with your 2.47. Its not like it is any weaker or anything and unless you plan on driving on autobahns. My 380SEC has a 3.something LSD and while I don't mind the sprightly nature it gives the car, it isn't as relaxed on the open road. I wrecked a 380sl and was interested to find a 2.47 lsd in it, but maybe that is a more common 380 ratio and this other one is odd?
Craig Baulderstone
Lurch
280s's
280SE3.5
280SL
350SL
500SEC's
560SEL's

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