Vintage Cars: engine weight, vintage website, good luck

Question
Hello Ron,
Do you by the chance know the engine weight for the m130 engine used in the 250/c w114 cars?

Answer
I looked through all my books and references ( and I have a lot !) and I see no mention of engine weight.
Have you tried Mercedes vintage website?  They have a link for contacting and I have always found them very helpful.  Sorry I cannot help, good luck
Ron