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Old 06-08-2007, 12:04 AM's Avatar is offline Moderator
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How times have changed. Back in the 'old days' all engines were set up like that! The X-over valves were actuated with bi-metallic springs that unwound as the header got hot and opened the valve. Main problem was rusted and sticky valves that froze open or closed. Had to WD40 and pound on them to keep them loose. Will work fine and definitely helps engines warm up quicker. Just can't rev the engine to 10,000rpm w/ valve closed but you wouldn't try that would you?
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