| Engine crank seal [message #103848] |
Fri, 22 October 2010 21:20  |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
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Looks like I have something to add to the seal saga. Today I rigged up a hoist to lift the front of my 455 engine as my front seal is leaking like a sieve. The odd thing about it is my engine only has 5,000 miles on it and it started leaking at around 2,000 miles. What I found is the dampener is in great shape but the seal is hard like a 100,000 mile seal. What ever this new seal is made out of it can't take the heat of a hard working motor. It never got over 260 degrees (oil sump). Only a very short time at this temperature. I have the Aluminum radiator with the internal oil cooler and I also have a large external oil cooler in series after the internal one. The engine water never got over 220 degrees. The problem seal is a National #472082. I called Felpro (it came in the Felpro gasket set)and asked them if there was something different in the seal material and they of course said no. I seem to remember Ken Henderson was also having a problem with front seals in his new Cadillac engine. Does anyone know of a seal manufacturer that can take the heat, this is far too much work for changing faulty manufactured parts even if I were a young man. Also if I have any more problems with the rear seal I will get rid of the 460 Ford and go back to the rope seal.
Roy
Roy Keen
Minden,NV
76 X Glenbrook
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