F-20 main bearings

Loren in WI · Oct 7, 2013

Can anyone tell me how much clearance there is on the rod bearings in a F-20?

Old-F20 · Oct 7, 2013

I keep mine from .003 to .005

Nebraska Kirk · Oct 7, 2013

.003"

robgIN · Oct 7, 2013

You don't want them too tight because they are splash lubed, not pressure lubed. I prefer to set them the old fashioned way, as described in the service manual. Plastic guage seems like a waste of time to me on these engines, as the journals are likely to be irregular if it was used a lot, but in reality they are very forgiving, as long as it can turn and isn't so loose it knocks, it will likely be just fine.

F-20 main bearings

Loren in WI

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Old-F20

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Nebraska Kirk

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robgIN

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