Posted by VernMI on February 22, 2013 at 04:38:11 from (188.8.131.52):
In Reply to: 74 ford tranny posted by molinebob on February 21, 2013 at 16:58:02:
Teflon seal rings have trouble energizing when cold. They rely on pressure behind them to push them out against the seal surface and in your case the oil flow is going around them until there is enough flow to build pressure to push them out against the seal surface. Higher engine speed increases the oil flow until they finally energize. Teflon seal rings have very little "memory" so they don't spring into place like a cast iron ring. Some seal rings are solid one piece while others have "scarf cut" ends. New seal rings will probably fix the problem because they are slightly more pliable and don't have the wear that is on the old rings.
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