Re: [MBZ] sluggish running 300Se.

[Peter Frederick]

They are not misadjusted, they are opening and closing late in relation 
to crank/piston position and ignition timing.  This interferes with air 
flow quite a bit at low charge density/low velocity.  The effect is 
much less as the charge density goes up and the velocity in the intake 
runners increases.

The M103 chain is a weak sister -- they only last 100,000 miles under 
the best conditions (synthetic oil) and will wear sooner if you use 
dino oil.

It is exactly the same chain as the M102 and is pulling four more 
valves...

Peter