While we love to pan these conversions, and these comments here are from one of this forum's staunch advocates of originality, keep in mind that
history has been kind (kinder then we are!
) to conversions using Ford engines, including the one noted here on the 250SL!
Back in the early 1960's, of course, to make a nice-sounding story, Carroll Shelby strolled into the Glass House (for the unanointed: Ford World Headquarters) in Dearborn with a Ford V8 under one arm, and an AC Bristol in tow; the resultant conglomeration of course eventually yielding the famed series of Shelby/AC Cobras. In case you've been under a rock, this car has yielded far more replicas then originals ever existed. All powered by Ford. Imitation is the sincerest form of flattery!
Around the same time, the anemic and also-ran Sunbeam Alpine received a factory conversion and short-lived fame as the Tiger--arguably one of the nicer "sleeper" cars of all time. This was available with the 260 and 289 to the best of my recollection (Mk. I and Mk. II)and today enjoys quite a following. It might have lasted even longer had Chrysler not purchased Sunbeam's parent. You could not sell a Chrysler product with a Ford engine in it! I've always wanted a Tiger, and it's on my short list of cars to own someday...
Lastly, the stunningly beautiful (IMHO) Triumph Stag, while equipped with a [horrendous[:0]] Triumph V8 engine has actually
benefitted from shade-tree mechanic's conversions using the aforementioned Ford V8 as well as European Ford V6 Essex engines. While we value an "original" MB 2.3, 2.5 or 2.8 engine, many collectors will shy away from a Stag with an original engine because the original was so bad. I'm told by a Stag owner that the problems were eventually corrected--but many an engine had already been removed by the time the Triumph guys got around to fixing the issues.
Of course the theme here is obvious: a British car "rescued" with Ford "Iron"...of course the 250SL needs no such rescue...but IF one were to want another engine in the W113...there's certainly an historical precedent in choosing a Ford!
Michael Salemi
1969 280SL
Signal Red 568G w/Black Leather (Restored)
President, International Stars Section
Mercedes-Benz Club of America