Engine Number

bamaj · Post by **bamaj** » Fri Jul 06, 2018 3:02 pm

I had the time today to do a little looking at my jeep and to start to fill out my survey. Here is a little of what I have found. Engine number is MD 104915 i have a prestolite generator 28amp the serial number for it appears to be 4484. I have an autolite distributor cover and the voltage regulator is DC electronics. As soon as I can I will send pictures and get the rest of the information on the survey. All of the data plates are missing so I have no idea of serial number or dod. I have grill that doesn't fold down I have the new style fenders and the catch for the passenger seat.the battery box lid is held down with a latch as opposed to the screws. Any date information you can give me will be greatly appreciated. Thanks Jeff

Post by **wesk** » Fri Jul 06, 2018 7:52 pm

Are you sure the engine # is MD104915? Could it be RMD 104915?

bamaj · Post by **bamaj** » Fri Jul 06, 2018 8:18 pm

I could have missed the R I will recheck in the morning. I take it that's not a good number?

Post by **wesk** » Fri Jul 06, 2018 8:45 pm

It may be a bit high for your jeeps year. I just want to make sure it is not a Factory Replacement Engine (RMDXXXXXX)

Prestolite's serial number system combined a letter with a number in it's prefix. So for example if yours was 3K 4484 it would be a Mar (3) 1955 (K) generator.

bamaj · Post by **bamaj** » Sun Jul 08, 2018 7:20 pm

bamaj · Post by **bamaj** » Sun Jul 08, 2018 7:20 pm

bamaj · Post by **bamaj** » Sun Jul 08, 2018 7:24 pm

Post by **wesk** » Sun Jul 08, 2018 8:11 pm

Looks like your generator is serial 4494 but that looks like a rebuilder's plate not the original Prestolite/Auto-Lite plate.

Here's an original plate.

Your engine casting # and casting date aren't much help verifying the serial.

bamaj · Post by **bamaj** » Sun Jul 08, 2018 8:16 pm

bamaj · Post by **bamaj** » Sun Jul 08, 2018 8:21 pm

bamaj · Post by **bamaj** » Mon Jul 09, 2018 5:43 pm

Wes I don't see a R before the MD the block number i sent another picture I'm not sure how well you can see it.

Post by **wesk** » Mon Jul 09, 2018 6:09 pm

No it certainly does't look like one however if you note how lightly stamped the MD is, it is certainly possible the R could have been machined off on an earlier decking of the block. I would guess at this point you have a 1954 or 55 unit. I'll reserve a final comment until I see your completed survey form. You should mak a sincere effort to get the date codes off the axle housing and the tranny/transfer.

bamaj · Post by **bamaj** » Mon Jul 09, 2018 6:35 pm

I sent the tranny picture I think it's 1/22/53 I will try to get the other numbers in the next couple of days.