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Joe K · 02-18-2020, 11:58 AM

I think for a while everyone thought that a diamond mark somehow affirmed "better quality?"

Now perhaps not so? I have seen diamond blocks sell for premium over a regular block. Well, I have seen diamond blocks ASK a premium.

I'm not sure I would bother. IMHO, the most "bulletproof" blocks seem to be motherhood & apple pie "A" blocks from the original production. My B "Gordon Smith" compressor (no counterweights) suffers from deck cracks on cylinders 2 and 3 - and this seems common for B - although the block may have been chosen for the GS Head BECAUSE it developed cracks.

Joe K

02-18-2020, 11:58 AM	#11
Joe K Senior Member Join Date: Jul 2010 Location: Cow Hampshire Posts: 4,188	Re: The Diamond Mark Challenge I think for a while everyone thought that a diamond mark somehow affirmed "better quality?" Now perhaps not so? I have seen diamond blocks sell for premium over a regular block. Well, I have seen diamond blocks ASK a premium. I'm not sure I would bother. IMHO, the most "bulletproof" blocks seem to be motherhood & apple pie "A" blocks from the original production. My B "Gordon Smith" compressor (no counterweights) suffers from deck cracks on cylinders 2 and 3 - and this seems common for B - although the block may have been chosen for the GS Head BECAUSE it developed cracks. Joe K __________________ Shudda kept the horse.