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#488348 - 02/18/08 10:30 PM
Re: What do the stamped letters mean?
[Re: Oldsfan]
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rocketraider
Long Time Member
Registered: 12/05/01
Posts: 3110
Loc: the Last Capital of Dixie
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It's code for cylinder size. They were made to tolerances for the standard bore, but rather than scrap a block that machined out of round or out of spec, they'd hone it out a bit oversize and select fit the pistons (which could also have those letter codes). Uh, hope you marked the pistons to the cylinders?
I think part of the "select fit" assembly on W30 and W31 engines involved putting "A" code pistons in "D" code bores so they'd rev a little quicker at the expense of oil consumption and slight piston slap. Joe P, you have any insight on that?
_________________________
Glenn Williamson
Rocketraider
member AACA and all major Olds clubs
"That's a strange concept, Son" said my father as he sampled the day's run of silvery-clear moonshine for taste and quality. "Good 'shine, that. Your grandpap would be proud that the gift has passed on to another generation. But yes, it's real strange that some folks feel like a varmint has more right to illegally inhabit and destroy your property than you have to prevent it from doing it."
"Come to think of it, that's why your Uncle Reade sold off all them rental houses he had. It was costing him more to fix what the varmints tore up than he was making off 'em. And the govamint wouldn't let him evict them."
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