M272 Crankshaft Position Sensor

Recently the E350 wagon has been playing up. It started out by occasionally losing power, then progressed to stalling. At the times this would happen, the check engine light would be illuminated. After a while the check engine light would be on around half the times the car would be driven. In order to diagnose […]

The 450SLC hits 300,000km

This evening I took my 450SLC for a drive up the old Pacific Highway. I wanted to check the impact of re-connecting the vacuum advance on the distributor. I had discovered the line was broken when doing some maintenance. With the advance enabled, mid throttle response seems a lot better. I do get a little […]

USA Junkyard Visits

I am currently in the USA and had a few hours to spare in Cincinnati Ohio before I headed out to the airport. When I lived in the USA, I used to go to the self service junkyards to grab bits and pieces. These junkyards are larger in the USA and they have standard price […]

The 560SEC has stopped smoking

My 560SEC had a problem where it would emit a puff of smoke after idling. This was rather embarrassing taking off from the lights. It did give me the advantage of keeping people back who got too close. My assumption was that it was cause by old valve stem seals. As the seals get old, […]

560SEC Timing chain and valve stem seals

The Timing chain replacement is almost finished on the 560SEC. The new chain is installed, guides fitted and valve stem seals replaced. I stopped by the workshop to pick something up that I had left in the car and I was able to see it almost done.

The photo shows the new chain in […]

The M117.968 560 Engine

The 560 is the ultimate M117 engine. This family of engines was introduced in 1969 with the 3.5l M116 and was followed in 1972 with the 4.5 M117. The M117 is a longer stroke version of the M116. Both engines share a SOHC design, 2 valves per cylinder and always had fuel injection.

These engines […]

W111 Heater lever upgrade

Most Mercedes from the mid 50s to the late 60s had a similar set of controls for the heater. There are four horizontal levers controlling the amount of heat and the direction of the air flow.

At least on the W111, the lever on the top left controls the amount of outside airflow. The top […]

560SEC fuel leak

When I last used my 560SEC before Xmas, I noticed a rather large puddle of petrol underneath it. I’ve not driven the car since as it is rather dangerous to drive with such a leak. I had assumed it was probably fuel hoses. Many cars run on E10 rot their hoses. I purchased a few […]

560SEC Upcoming Projects

I’ve been preparing for the next round of improvement projects for the 560SEC. The most important is the Timing Chain and Valve Stem seals. I’m not going to do this job myself and am hoping to save a little labour cost by having both the stem seals and the chain done at the same time. […]

W126 Differential Ratios

The W126 range was in production from 1979-1991. I’ve never seen a comprehensive table of W126 differential ratios, so I have attempted to create my own. Not only did they vary between models and years, but in some cases countries too.

It is possible I have missed a few more country specific ratios. Please indicate […]