We had the oil gasket on the water pump leak when we switched to the weber carbs set up and replumped the crank ventilation. We were not getting the internal air out of the engine and it blew right through the lower oil seal on the water pump. And seaped from the base of the distributor. And at very high rpm, came out the dip stick.
Just some more ideas thrown out to you for meditation.
Robert
1979 TR7 DHC 2 Litre SCCA Autox F Street Prepared
1979 TR7V6 DHC Buick 4.1 Litre Future Autoxer in X Prepared
1979 TR7 2.0 DHC Stock
1977 TR7V8 FHC Street
Autox pics from San Francisco Region USA:http://www.WWRacing.net
http://www.wwracing.net/photos/SantaClara5_10/32.html