Originally Posted by autozen
I wouldn't exactly say they were junk, but I do agree with you about what it is going to take to get each one on the road. The inj pumps are the least of the problem. In fact they are probably in good shape except for the fact the pistons are probably frozen. No big deal, because with patience and a few days they can freed up without a pump rebuild. The expense is going to be in correcting the hydraulics in the suspension and the power door closers and windows IIRC. It has been a long time sice I serviced 600s. All that having been said, I think you've missed the point. A Grand Mercedes ( moniker for a 600 ) is a work of art. There were only a few thosand built in their day and many are gone forever. Those that are left should be restored without concern for cost to value. You don't restore one of these cars with the thought of getting your money back when you sell it. As an example, why restore a found Rembrant. It's just an old painting. You can go down to Kame Apart and buy a brand new copy.
The short wheel bases are fairly common. The jewel in that group is the 4 door Pullman. If you need to do any engine work, I've got a brand new set of 6.3 pistons and cams setting on the shelf. I'll make you a good deal. I've even got a 600 factory repair manual kicking around somewhere. I'll have to look. I am envious of you though. Having owned a Pullman in an earlier life, I can really appreciate the machine.
Common is not a word you use when total proction from 1964 is only 2500..
manuals are best obtained on DVD from the Classic center.
I guess it has been sometime since you worked on a M-100 with Bosch MFI,but I am continuously working on them .As the newest is 34 years old ,the Most common problem is indeed the MFI,You CANNOT Strip the pump and repair it by yourself!!!!.Don't even think about it!!!.
As I may have menyoned before ,the average cost of a MFI is $48,000.Thats 48,000 reasons to leave it to Fairchilds or Gus Pfizer to overhaul.
Daimler Chrysler themselves will tell you same.and for good reason,the multiplunger pump has tolerances in the millionth of an inch in the injector elements.Touch them with your bare fingers and they are history.
DC also repeat the most common advice ,which is to ATF to fuel tank at the ratio of 100-1 ,and start the car at least once a month to prevent damage to the MFI,resulting from the build up of varnish and Moisture.As these 600's have sitting there unsued for many years the chances of being able to just start and run are NIL.
I'll repeat Karl Middlehuaves sage words here .." the 600 is a $200,000 car..buy one for $20,000 and you will spend $180,000 getting it on the road..."
Potential W100 buyers are amongst the most finiky in the world,so restoration has to be 'Pebble beach 100 point standard' or you are wasting your money.This why the Leakes' never did anything with the cars while they had them.
Just look at the occaisional " NO Sales" on Ebay of W100's which look OK to the casual observer but do not meet the expectations of those who know them.
Also,this particular 600 owner has a car which was maintained by an (in) famous former owner with no regard to cost because his country was paying the bills,the car was routinely shipped to Mercedes in Germany for service,but it still needed the parts OStein mentioned..
The injection pump is NOT the biggest issue when it comes to restauration cost on a 600. I spent more than 15,000 EUR on the hydraulics alone and almost 10,000 EUR on the suspension and axles. These items are due on ALL 600's, no matter how low the mileage. Just to give you an idea...