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Old 10-28-2015, 01:42 PM   #72
George Miller
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Join Date: May 2010
Location: NC
Posts: 2,975
Default Re: 5 main, chev, crankModel A engine

Originally Posted by Herb Kephart
George

VERY interested in this--and have a couple questions.
You moved the main bearing stud centers out to an area where the rib in the block is thin--what did you do about this? Also what do you intend to do about the misalignment of the lifter holes with the respective cam lobe?
Also, I wonder why you bored the big end of the rods on your lathe? I always did it in the mill, to insure parallelism of the hole, with the just bored wrist pin hole--neglecting inevitable table rock.
Wondering also if you did the line boring your self? I have line bored the mains on both Ford and Chevy fours on the Bridgeport with a truly Mickey Mouse rig--but the reground crank spins in the inset bearings--so I was happy. The table is longer than your Moog, admit ably. Looked for a photo of this, but I guess that it was on film, and now is lost in a one of many boxes.

Herb Kephart

The miss alignment of lifter bores will be fixed with new lifter boss made in one long bar. Then attached to the block.
Here is a picture of the start of long boss bar.
Attached Images
File Type: jpg Lifter boss 001.jpg (12.8 KB, 199 views)
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