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By 55blacktie - 2 Years Ago
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What is the outside diameter of OEM valve guides? I see 0.500 more than anything else, but mine measure closer to 0.575. I bought 11/32 x 0.500 viton valve seals, but I think 0.530 would require less cutting of the guides in order to fit. Sometimes less is more.
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By Ted - 2 Years Ago
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I get 0.585” at the upper part of the guides on a pair of heads sitting in front of me. I typically get away with using 0.562” seals but there are some heads that have just enough of an offset at the hole that necessitates using a 0.530” seal. I do not use 0.500” seals unless there’s a spring fitment issue when trying to use the larger diameter seals.
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By 55blacktie - 2 Years Ago
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Thank you, Ted.
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