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larry
A while ago I replaced the diverters in the left side of the block because that head was overheating. Now it runs cool while going slow but still runs at 180 degrees when going 3500. The right head runs cool. I temporarily removed the relief valve and it still runs hot when going 3500. Any ideas?
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outboardwizard

Hello will need to verify that no air or exhaust  leaks in cooling system and remove head to check for swollen rubber deflectors in water jacket restricting water flow.

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