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Bruce Lancaster · 04-13-2012, 11:25 AM

Most of the engines we mess with like Flatheads, Model B's, and SBC's have decks that are thinner and hence stud/bolt holes shorter than would be ideal for rigidity. A goal here, if the deck holes have not already been tapped out to class 2 by an earlier rebuild, is to maintain as much contact/grip area as you can in there. Leaks can be dealt with with sealer, and simple assembly tricks will get loose studs to set straight, but these tricks do not restore the strength of the connection.

04-13-2012, 11:25 AM	#16
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: Cleaning threaded block holes Most of the engines we mess with like Flatheads, Model B's, and SBC's have decks that are thinner and hence stud/bolt holes shorter than would be ideal for rigidity. A goal here, if the deck holes have not already been tapped out to class 2 by an earlier rebuild, is to maintain as much contact/grip area as you can in there. Leaks can be dealt with with sealer, and simple assembly tricks will get loose studs to set straight, but these tricks do not restore the strength of the connection.