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I fired my Flathead for my 50 merc up today for the first time. For some reason I’m getting 50-60psi of oil pressure at idle. Revving it up will move it to about 70, maybe 75. I’m thinking there is something goofy. I plastigauged all the rod and main bearings when I assembled the engine, they...

Getting my merc back together for some fall cruising before winter hits. Im bypassing the heater cores and I’m wondering if I can just plug the fittings on the head and water pump or if I have to have a hose running between the two? Looks like I can just plug them, but I want to make sure.

I’m rebuilding the 8CM out of my 50 merc. I got a new bushing for the idler gear that links the oil pump to the cam, ordered it from Red’s, pressed it in to my existing gear, and it’s too small for the shaft it’s supposed to go on. Inside of the bushing measures .020” smaller than the shaft...

I made a clock from the clutch out of my ‘50 Merc I was looking at the old clutch pressure plate that I pulled off my ‘50 Merc, and I noticed how it would make a great clock face. So, I zip-tied a clock mechanism to it and now I have a pretty cool clock in my shop. I figured someone here might...

So, I’m looking at my block trying to understand and plan for the 95% mod and I noticed an interesting hole behind the oil pump drive gear. From what I can see, it just dumps straight back into the crankcase. I did some googling to try to see if other blocks had this hole and the one picture I...

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I’m rebuilding my 8CM after it started losing oil pressure. I found a considerable amount of sand in the engine, and I’m 99.9% sure the source of the pressure loss is the cam and rod bearings, cause they’re pretty bad. I’m unsure if this pump is still good to run though. It was making about...

I’m rebuilding my first Flathead and I have some questions Hello! (First off I wanna give a disclaimer: I’m 22 and while I’m not necessarily new to engines or even all that new to Flatheads, this is my first full rebuild of any engine and I still have a lot of learning to do.) So, I’m...