Quote:
Originally Posted by 40 Deluxe
That crack is the result of heat from the exhaust crossover. The aluminum was on the verge of melting. Excess heat is caused by retarded timing or a lean fuel mixture. If you have the original vacuum only Load-O-Matic distributor, the diaphragm may be blown. If the carb is not original, the Load-O-Matic will not give the right advance.
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The motor has a 59a dizzy on it.