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Tech Question
Thomas Jones, Butner, NC, 1969 dodge dart 318
What causes the transmission pan gasket to blow out between bolt holes? I changed the filter and within 4 miles of driving I noticed the gasket was blown out again all the way around between bolts.
Tom-
It's conceivable, but highly unlikely, that a vent blockage could cause this. But since you didn't mention a pre-existing problem, I'll discount that theory, especially since you said you dropped the pan for a filter change.
The most likely problems are inter-related. Simply, the pan is not flat and the soft gasket is being "squished" out. This usually is caused by over-torquing the bolts. This problem is most likely to occur with cheap aftermarket rubber or cork gaskets. The fix is twofold: Go to a Dodge / Chrysler / Jeep dealer and buy an OEM steel-core, torque-limiting, silicone lip pan gasket. P/N is 4295875AB (assuming you have a A-904 trans.) Then either hammer the pan flat using a block of wood, or get a new pan, too.
Rick
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