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bronze
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J
TR2/3/3A Manganese Bronze Valve Guide Clearance
What are the recommended clearances for both intake and exhaust when using bronze valve guides? I have seen comments ranging from 1.5-3 mils for intake and 2.5-3.5 mils for exhaust, which is mostly in the range of the spec in the service manual for iron guides (1-3 for intake, 3-5 for exhaust)...