Date registered: Mar 2011
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1975 450 SL
My uncle recently purchased a 1975 450 SL. He told me about some issues he is having with the car, hoping that I could find some answers online (he is not computer savvy.)
He is a mechanic by hobby, though he rarely works on anything manufactured outside the states (his three babies are a 1971 Cuda convertible, 1969 Cuda fastback and a 1971 Dart swinger.)
A few weeks ago, while driving the 450 SL, he started to hear a "clatter" and then experienced a loss in power, he described it as "running on 4 cylinders." After inspection he noticed the plastic guide for the timing chain had broken. He replaced it, inspected the valve train, noting everything appeared solid, but also noticed clearance between the valves and lifters. He started the motor and again noticed the "clatter", and shut it off. That is where the car now stands.
He mentioned the status of the valve train because he doesn't think valve/cylinder damage occurred.
I know him to be a knowledgeable mechanic, but Mercedes' are a new beast, and he is looking for advice.
I am happy to read, so please share links if they are applicable. Thanks for the help.