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Test Drive / Re: 280" Concourse; Diary of a layman
« Last post by TJ 450 on Today at 04:09 AM »
Interesting, yes my W109 has the acrylic lacquer, 180 Silbergrau.

Tim
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Mechanicals / Re: What have you done for your W116 today?
« Last post by Alec300SD on Yesterday at 09:45 PM »
IIRC the engine shocks have flats ground into the shank so you can use a 7mm open end wrench as a counterhold.
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Test Drive / Re: 280" Concourse; Diary of a layman
« Last post by UTn_boy on Yesterday at 08:47 AM »
Cellulose is a bit old school, it would've been 2K on the 116 originally surely?

Tim


No.  Originally, W116 cars would have had a single stage enamel (for solid colors).  The metallic colors after 1974 were a two part base/clear, but before 1974 the metallic colors were also a single stage, but in an acrylic lacquer. 
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Mechanicals / Re: New to me 1980 280se, rough start, changing idle
« Last post by UTn_boy on Yesterday at 08:33 AM »
If you're seeing jitters on the harmonic balancer then there are either vacuum fluctuations in the engine (due to ill-seating or burned valves....quite common), or the distributor itself is worn....another common issue. 

Under the hood somewhere, probably on the drivers side, there is a little metal box with a bi-polar plug on it that the speedometer cable runs through.  It'll have a button on it you have to manually push in to turn off the 02 sensor light.  Otherwise there is an issue with the Lambda system's electrics or the new 02 sensor wasn't plugged in.

As far as how to test the Lambda, you're looking to see what voltage it's giving off after it get hot.  The frequency valve has nothing to do with the voltage the 02 sensor is giving off.  The voltage given off can be mathematically converted into a percentage duty cycle.  If you have specific questions about something in particular regarding Lambda please ask.  The chapter on Lambda is 30-40 pages long.  I don't want to post all of those pages......it's too time consuming. 

Below are lot of pictures that should answer a lot of your questions.  Do make it a point to buy yourself an M-110 engine repair manual.  I've been working on these for around 25 years, and even I have to use the manuals often.  It's a worthy investment.  I believe this same manual is also in this forum's library. 
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Mechanicals / Re: New to me 1980 280se, rough start, changing idle
« Last post by rumb on Yesterday at 07:31 AM »

You really need to remove the AAV and clean and test it in hot water.  They get all gummed up and will not close all the way. This is what raises the idle when cold and reduces when warmed up. As mentioned adjust after it warms up. There are directions on the interweb\utube on how to do.

You have a vac advance and retard distributor. The retard works if the AC is off and comes off when the AC is on. there should be a vac line going to a little dome shaped valve with some wires going to it. Just to insure the disti is fine put a mitivac on each line and verify the plate/ timing changes. Make sure the other vac line is going to the correct port on the throttle body, there s/b one above the plate and one below, I dont remember which one you should be using.
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Mechanicals / Re: What have you done for your W116 today?
« Last post by rumb on Yesterday at 07:05 AM »
They are hard to get off because the shaft spins when you are trying to undo the nut. Grab the shaft with some pliers.
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Test Drive / Re: What became of M100 Forum?
« Last post by TJ 450 on Yesterday at 12:38 AM »
UTn_boy,

I would expect no less regarding the price of those elements, lol.

Rolo, yes that would be Tom, he knows what's going on as far as M100 parts availability is concerned.

Regards,
Tim
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Test Drive / Re: 280" Concourse; Diary of a layman
« Last post by TJ 450 on Yesterday at 12:17 AM »
Cellulose is a bit old school, it would've been 2K on the 116 originally surely?

Tim
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Test Drive / Re: 280" Concourse; Diary of a layman
« Last post by floyd111 on 20 January 2020, 11:24 PM »
I think I need to write the LAYMAN part in capitals again, haha! makes me sorry i even asked, coz I understand less than i did before.
Guess I need to stay away from this part and wait another year for the slowest garage in Asia to finish that clearcoat.
All  know it's a cellulose, and that the clearcoat has not been done.
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