03-17-2010, 09:21 PM
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CC Member
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Join Date: Apr 2009
Location: Bethesda,
MD
Cobra Make, Engine: CSX 6022, navy blue, period correct 427 SO
Posts: 2,154
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Not Ranked
Quote:
Originally Posted by patrickt
Your engine builder should have provided you with the valve lash specs and whether or not they are at HOT or COLD. Guys do them both way, but the lash will be different on hot than cold, even on the same engine. Personally, I adjust my valves COLD to .018 -- that's with an iron block and aluminum heads. The iron/iron, iron/aluminum, aluminum/aluminum all have different variations in the hot to cold lash relationship. If you don't have the specs from your builder, give him a ring and ask him what you should set your valves to and whether that number is hot or cold.
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He said you can do it cold and told me to give him a call when I was going to do it, so I'll do that.
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