Today I picked up a 'free' Mercedes engine. Folks
moving, and needed to get rid of it. They said it was
out of an SL, but other than that didn't know much
about it (belonged to their Dad, since passed away).
I've got a '73 SLC, so I thought it might be good to have
some spare parts. After unloading it, I noticed a couple
of things that are different. The biggie is that its got
mechanical fuel injection, not electronic like my SLC.
It has a smog pump, so I figure it must be post 1973.
Cast iron block and aluminum heads. Valve covers
appear to be the same as my SLC. Another difference
is the size of the intake plenum. Its easily 50% larger
than my 450 engine.
Other than the things I mentioned, its identical to
my 450 engine.
Could this be a 560 engine? Did the SL's or SLC's
ever use mechanical FI? I didn't think so, but this
is the only Mercedes I've owned, so I'm no expert.