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600sci with stage 4 whipple
How does the mercury 600 hold up with the stage 4 kit added. Is it a decent package or something to stay away from?
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Great package as long as engine healthy when upgrades added. Big midrange torque. For greatest longevity, prop up to keep rpms near stock ranges.
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Originally Posted by Kelly O
(Post 4727231)
Great package as long as engine healthy when upgrades added. Big midrange torque. For greatest longevity, prop up to keep rpms near stock ranges.
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Buddy of mine had stage 4 installed when he had engines rebuilt. Once all the bugs were worked out, it runs strong. He put Hering cleavers on it, and it was a really fast boat. I think the bugs were not whipple related, as I don't think the ECU's had to be sent back.
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I did the stage 3 at 80 hours.at 200hr I pulled heads and had edddie young rework heads and springs and did stage 4 upgrade.it makes a huge difference and sounds like a real motor instead of a house boat motor lol
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