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Actually, the exhaust seals should be larger. It should definetly be noticable - the top holes are larger in diameter to accomodate the larger stem.
(how many other people have 2 m117 heads and several valves within 2 feet of their computer desk?~)
The VERY tops of the intake and exhaust valves have the same diameter. But the exhaust valves increase in diameter shortly thereafter. This also makes taking those keepers out a pain in the @ss because the retainer only goes down to that point.
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