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MERCEDES W126 The W126 S Class saloon and coupe from 1979-1992 (260SE, 280S, 280SE, 280SEL, 300SD, 300SDL, 300SE, 300SEL, 350SD, 350SDL, 380SE, 380SEL, 380SEC, 420SE, 420SEL, 420SEC, 500SE, 500SEL, 500SEC, 560SE, 560SEL, 560SEC)

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  #1  
Old 11th August 2013, 08:52 AM
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Default 420SEL vs 560SEL

Anyone know the differences apart from the engine capacity? Are any of the engine internals interchangeable? Would a 560 crank, rods n pistons fit in a 420 block, or were the bores different too? Were the heads different? What about the brakes, transmission and diff? Did the 420 have an electric back seat option? Any other bells that the 560 had standard and the 420 did not?
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  #2  
Old 11th August 2013, 01:19 PM
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Default Re: 420SEL vs 560SEL

The M116 and M117 were two families of engines:

M116 3.5l. cast iron block alloy heads installed in R107's, W108's and W116's
M116 3.8l. all alloy installed in R107's and W126's
M116 4.2l. all alloy installed in R107's and W126's

M117 4.5l. cast iron block alloy heads installed in R107's W108's and W116's
M117 5.0l. all alloy installed in R107's and W126's
M117 5.6l. all alloy installed in R107's (roadsters only), and W126's

There are differences in engine mountings and exhaust manifolds for each installation.
There are differences in engine management and fuel injection design across the models.

Dunno about any variation in engine internals for particular engine capacity, across the models.

I do know that they all share the same air cleaner design, but there are minor differences in mounting bracket attachment to the camshaft covers across the models. Perhaps there are some other differences as well, such as water pumps.
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  #3  
Old 12th August 2013, 08:06 PM
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Default Re: 420SEL vs 560SEL

Mark, I will endeavour to answer you properly in due course. There are a number of publications etc. that I will need to peruse to give you the answers you are looking for. My 420SEL has the electric back seat reclining option, but no sunroof nor cruise control.

Switching back to 560SEL only, I do believe there were some variations in features and specifications from whence the model was introduced, and by the time it was discontinued in 1991 (I think), a period of some five years. I did read a most comprehensive appraisal about two or three years back, but I can't even remember the source. Regards Styria
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Old 12th August 2013, 08:28 PM
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Default Re: 420SEL vs 560SEL

560SEL has cigar lighters in the ashtrays in the rear doors.

After next week I may be able to provide more differences.
If it is purchased by a friend of mine from the M-100 group I'm flying to Perth Friday or late Thursday to help him drive a '91 560SEL back to Sydney.

Hope he buys it
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  #5  
Old 12th August 2013, 08:31 PM
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Default Re: 420SEL vs 560SEL

Quote:
Originally Posted by abl567 View Post
560SEL has cigar lighters in the ashtrays in the rear doors.

After next week I may be able to provide more differences.
If it is purchased by a friend of mine from the M-100 group I'm flying to Perth Friday or late Thursday to help him drive a '91 560SEL back to Sydney.

Hope he buys it
Hello Ant is this the 560SEL for sale in WA?

http://www.carsales.com.au/private/d.../?Cr=2&sdmvc=1
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  #6  
Old 12th August 2013, 08:36 PM
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Default Re: 420SEL vs 560SEL

Yep
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  #7  
Old 12th August 2013, 08:46 PM
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Default Re: 420SEL vs 560SEL

Nice car.

Ant 4000kms in 4 days now that is alot of driving.

Hope all goes well with the car.
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  #8  
Old 13th August 2013, 09:49 AM
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Default Re: 420SEL vs 560SEL

I would have the buyer drive it extensively (say 200 klm) and have it inspected closely for brakes hoses, belts etc before the trip overland from Perth.
Not worth the cost of training across, or is it the prospect of adventure that attracts?
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  #9  
Old 13th August 2013, 11:03 AM
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Default Re: 420SEL vs 560SEL

It will be subject to a pre purchase inspection and if purchased given a major service including hoses and belts and new tyres if required. The potential purchaser spares no expense when it comes to his cars

And yes the decision to drive back was swayed by the adventure component
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  #10  
Old 24th April 2020, 09:57 AM
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Default Re: 420SEL vs 560SEL

This is an old thread, but as I was driving my 560SEL the other day, I was trying to work out what you got extra between the 420SEL and the 560SEL, which had a difference in price of around AUD$50,000 in 1987. An amount of money that probably bought you a small apartment.

here is what I came up with - note that this is specific to Australian delivery models where the base 420 was highly specced up vs private imports.

1) Larger and more powerful engine - 180 vs 150 kw
2) Reclining rear seat as standard (optional on the 420)
3) Fanfare horn
4) rear cigar lighters
5) LSD as standard
6) Becker CD player vs Becker Cassette player

On the current market the 560 is the one to have, but when new It is hard to justify the difference in price unless you simply must have top of the range.

Basically (before on road costs) you could have

300SE - $125,000
420SEL - $145,000
560SEL - $195,000

On the 420, you got SLS, alloys, sunroof, leather etc as standard in Australia.
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  #11  
Old 24th April 2020, 12:31 PM
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Default Re: 420SEL vs 560SEL

But the “town & country” horns are so good!
Surely worth the price difference
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  #12  
Old 24th April 2020, 12:52 PM
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Default Re: 420SEL vs 560SEL

and here is a 1991 price list, I think by then there were a few more things standard on the top models like Airbags, ASR and the like, but I do not have a brochure from that year.

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  #13  
Old 12th May 2020, 09:27 AM
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Default Re: 420SEL vs 560SEL

Found a few more differences:

1) Larger and more powerful engine - 180 vs 150 kw
2) Reclining rear seat as standard (optional on the 420)
3) Fanfare horn
4) rear cigar lighters
5) LSD as standard
6) Becker CD player vs Becker Cassette player

New

7) 260km/h speedometer vs 240km/h
8) Dual snorkel air cleaner
9) Anti-Squat rear suspension / Anti-Dive front suspension
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  #14  
Old 10th June 2020, 09:37 AM
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Default Re: 420SEL vs 560SEL

Updated again: Found a few more differences:

1) Larger and more powerful engine - 180 vs 150 kw
2) Reclining rear seat as standard (optional on the 420)
3) Fanfare horn
4) rear cigar lighters
5) LSD as standard
6) Becker CD player vs Becker Cassette player
7) 260km/h speedometer vs 240km/h
8) Dual snorkel air cleaner
9) Anti-Squat rear suspension / Anti-Dive front suspension
10) Memory electric seats for driver and passenger as standard (420 had non memory seats as standard, and maybe got memory for driver only late in production, not sure. Memory seats were an option for the 420)
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  #15  
Old 16th June 2020, 01:41 AM
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Default Re: 420SEL vs 560SEL

I am surprised that the 560 only has a power output of 180KW as compared with 212 for the 6.9. Yet, the 560 has a slightly better acceleration time to 100 km/hour. Weight penalty ? 4 speed gearbox for the 560 ? Regards. Styria
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