Lister-Petter Engine FR 3

[Joerg]

hello to all,
i am joerg from Germany and i seeking for information about a Lister-Petter Engine FR 3.

i have two Lister-Petter FR in my wooden boot.

Is here anybody how can share some information about this engine?

The number of the engines is 381FR3ME10 and 382FR3ME10.

I can not decode this number.

Also i looking for a manual about the FR3.

Thanks

[Combustor]

Hello Joerg,
               Those FR3 engines sound great! As I understand the numbering system from that time, the first three digits are the serial number in that year's production, then the letters are the model, next digit is number of cylinders, next letter(s) are for options or application, and last digits are added to 1950 to give year of build.
        Thus you have-- Serial numbers, 381 and 382
                               Model, FR,
                               Cylinders, 3,
                               Type, ME, (Marine,  not sure about the "E")
                               Year 10 + 1950 = 1960.
        From the numbers they are a pair of twins. Do they both rotate the same way?
        The British "Internal Fire Engine Museum"  list FR manuals available. You will need to pay a subscription fee to get them, but they are very good.
               The 3 cylinder motors should run very smooth in a boat, and sound wonderful!  Regards,  Combustor.

[AdeV]

If the letters are "MG" or "MP" (perhaps they're worn/difficult to read?), then they would be Marine Propulsion engines.

[DRDEATH]

Joerg the Internal Fire Museum has one of the largest libraries of engine manuals. When I joined they did not require a membership. They will accept donations which is important to keep going. If not for them many manuals would be lost forever for many people. DD