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12-22-2015, 04:01 PM #1Member
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Has anyone honed new rods for 3.3L Evinrude?
Hello, I'm rebuilding a 2005 Evinrude 250 Etec 3.3L powerhead for use as a fishing boat motor. I'm installing new WSM connecting rods. The new rods look beautiful with nicely polished bearing surfaces. What is the opinion on lightly honing a crosshatch pattern on them? I've heard this will help the needle bearings roll better and reduce the chance of them sliding. Or should I run them as is?
Thank you
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12-22-2015, 06:24 PM #2Scream And Fly VIP
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Run them.
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wingtime thanked for this postironhead stv, wingtime liked this post
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12-27-2015, 02:20 PM #3
Bearing skidding only happens at extreme high RPM or when the bearing has no load. Putting a cross hatch on a bearing surface will only increase the rollers resistence which intern will cause more heat. I would leave them alown and run them as they are.
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12-27-2015, 05:40 PM #4
The clearance the rollers have between the rod and crank is what makes them roll not the surface finish.
Popey
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