47-55.1 I got the oil pan blues......

[TX3100Guy]

As some of you may recall, my tribulations with the oil pan started early in my build. As spending nearly two years assembling the parts of the 1953 truck with the 1959 261 engine along with the McCulloch supercharger, I found a huge puddle of oil under the truck after its first test drive. This ended up being the result of a cracked crank main cap. So the engine was sent out to be rebuilt.

Eight months later I reinstalled the engine and since the magneto was out being rebuilt, I tried starting the freshly rebuilt engine with a new distributor that turned out to have a shaft 1/2 inch too short to engage the oil pump, but of course I didn't detect that until enough damage had been done that a second rebuild was required.

After the engine was back from its second trip to California, I began having to deal with significant overheating problems. Once I finally got that under control through a mixture of greater fan cooling, betting timing, and a richer fuel mixture, since the supercharger was pushing significantly more air than stock. It was winter and I didn't drive it very much.

However the original oil pan had an annoying and constant drip. At first I thought it was the drain plug since it seemed to be coming from the plug, however closer inspection revealed a crease and small pin holes along the bottom edge of the drain plug threaded backing plate. I attempted a repair, but the leak persisted. After much searching I finally found a pan in reasonable enough shape that a thorough cleaning and paint and it looked ready for work.

A few weeks ago, I finally got around to pulling the old drippy pan and installed the newly refurbished one. All seemed good, until I took it out for along drive this past weekend. When I came home, I idled it in the driveway to fuss about with some minor annoyance and when I walked back out to the truck from my garage there was a small puddle of oil.

Today I pulled the oil pan to find the source of the leak and sure enough I found that the front rubber seal that goes between the pan and the crank front main cap was not properly seated and this was the location of the oil leak (see photo below).

My question now is, what is the proper way to reinstall the pan, gasket, and rubber seals. The last several times I had to pull the pan, when I reinstalled I took the following steps.

1) with the pan mating surface cleaned, I put down a generous layer of Black Ultra RTV
2) then the cork gaskets with the rubber gaskets on each end were sealed to the pan
3) then after that had cured, I put a layer of the Black Ultra RTV on top of the cork and rubber gaskets and installed the pan.

Should the rubber gaskets be installed on the engine first, then mate the pan with the cork gaskets? Should there be any RTV used on the rubber gaskets and/or the main caps and/or pan?