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I indeed made traces of the original gaskets for future use. Hopefully, we will not need them! The fuel pump is now wired so that it can be turned off so the engine can run itself out of fuel. We have talked about using AV gas for these older vehicles, but I am worried that the high octane and...

never mind...

M3 and M8 are the same but different. W/P, head, probably the rods, crank, gear train will probably swap. The block is different, but the same, there is a casting on the w/p side that, on the M8, is machined out for the oil filler/crankcase vent. Carb, exhaust are unique to the M8 as is the oil...

Last of them....The floats needed adjustment, the book had a picture of the tool used to bend/adjust the floats, it wasn't in the kit, so I made one. Now, onto the clutch and brakes. Thankfully the throttle has been converted form hydraulic to a Morse cable!

Rebuilding the carb, again, nice to have the proper tools and books. After the carb was installed, I put new oil and filter in the engine, had to re mark the stick, it was marked 3 qts too low. The engine fired with little cranking....would have lit faster if I remembered to take the cap off of...

Since the packing date was way before I was born and 2 years after my father was born, I wasn't surprised to find the gaskets hard as nails, that is an easy fix and I could have made new gaskets if they were destroyed, so they were re hydrated in boiling water. This will make the gasket pliable...

After the pan was back up, the engine spinning freely and spark again...amazing that, when it takes 400 amps to spin an engine, you can loose spark!....on to the carb issues. The vehicle has an electric fuel pump on it, but we think it was putting out too much pressure, so a 1.5 to 4 was...

It has been a productive couple of week at the Museum. No pics before of the crankcase in a dry condition, but here are some of it after using the pre lube system. The "washers" are the felts that go on the pick up tube/screen filter and the scavenging pump discharge on the windage tray. The...

Here's a little update. The pig system came in a couple of days after it was ordered. This, but not a Melling, https://www.jegs.com/p/Melling/Melling-Pre-Lube-Engine-Oiler/1398393/10002/-1 I pulled the oil filter can. Funny thing, the filtration is a scavenging or bypass type, meaning it...

It is basically 2 separate pumps. The main P/U in the sump pulls the lube oil and supplies the engine oil pressure. The scavenging system, when in high angular operation, pulls the oil from what is the front, but would be the rear of the vehicle and discharges it into the sump. The scavenging...

Today, I re installed the main I removed, with the shims, the book I found indeed mentioned shims, measuring end play and rotation force. Since the rotation force cannot be measured as is, I just put the shims back into their original spots, kind of funky to me, .010 on one side and. 015 on the...

Reading is a wonderful thing. As I was going through the Hercules engine rebuild manual I came across the lube system that we have. It's a Scavenging oil system. It all makes sense now!

Okay, today is my Friday, so I did some searching in the libraries here at the Museum. I actually found two books for the M8 and M20. Turns out the oil pump is correct. Still not getting multiple pickup points, but found that it was missing some pieces inside namely, the two seals for the pickup...

This is what I have, the big ugly monstrosity with the two pickups coming off of it is the one that came out of it. The rusty one is one that came out of an industrial engine in a Searchlight generator. So I'm not understanding the multiple pickups. We do not have a manual for it at the Museum...

JXD, don't know why I put A....fixed it.

Does anybody out there have an oil pump out of the Hercules JXD out of a greyhound? The M8 at the museum has had a hard start condition since the last time it was parked. I dropped the oil pan today and found the whole inside of the engine dry. The oil pump is really funny it has 3 inlets on it...