Quote:
Originally Posted by rayhennig
Spot on. I have the early M104 and if you boys want screaming, this is the motor. It's red line is at 7000 rpm and it sounds great in a tunnel or alongside something solid.
Coupled with a 5 speed auto box, it performs well and will manage 30 mpg (UK) on a 80-90 mph run.
Good motor.
RayH
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A few years ago tour Mercedes Enthusiast magazine referred to the CIS 104s as "cobbed together", a rush job to get 4 valves per cylinder on the market in response to Japanese offerings. I had one in a 1990 300SL that needed a full valve job at 45k miles. It still has all the CIS problems - enigmatic fuel delivery system, with very expensive components, primitive diagnostics, inferior fuel economy - plus anemic low end power (worse than 103). A wiring harness is utterly insignificant by comparison - especially considering what you get in low end driveability. This wiring harness obsession is kind of weird - not that expensive and they've almost all been replaced already.