Re: Eliminate draft tube options
it seems the increase in the leak coincides with retapping those bolts,
A couple ideas:
-drilling and retapping the block you might have pulled some metal between plate and block, now it won't pull tight
-did you tap the plate too? if both pate and block are threaded it wont pull tight
If you do have to pull it apart I'd give some serious thought to dropping the pan and putting nuts onto those bolts. 2 bolts on like 8" centres into 1950s cast iron holding the front of a 600 pound engine from flopping side to side. I'm think the factory may have had a good reason to go to the expense of machining a flat inside that hole for the nut to sit on rather than just threading the hole.
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