| These are my '67 GT390 (C6AE-R)heads that I took to:
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D & J Machine & Engine Parts 518 E. Dunlap Phoenix, AZ 85020 (602) 395-0800 Darl Mumau (owner) |
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I was pretty excited to see a good looking set of heads sitting on my bench ready for an engine. My hopes were shattered when I had my new machine shop inspect the springs for suitability for my cam, he cam across this web of fractures missing chunks and painted over brass. |
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Note the silver paint covering the brass guides and the broken edges. |
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This is the best pic I could get of the cracks here. |
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All of these cracks and brakes were covered by valve seals.
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This would have held the seal properly for what? two seconds?
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So, when I confronted Darl about this he told me "That's life" and "cracks are normal". This is an example of a "perfectly exceptable set of heads" he claims. After abour 3 hours of arguing he reluctantly gave me a refund for the rebuild. He didn't have comparable castings to replace the heads, so I got a receipt. As of this writing, he still owes me rebuildable cores. |
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Hear is the chamber of one cylinder: Note the valve lap and the "graphite" finish. These pictures don't even show the inconsistant and sloppy (or tight) valve guide clearances. |
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Hear is what they should look like: This is before the vavle job. |
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