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Joe K · 06-17-2019, 11:07 AM

The "whuppa-whuppa" sound I referred to earlier is (was) an extreme wear signal. I should not have been running that engine at all with that potential for failure.

But I was young and stupid then. Now not so young.

Funny though - the "whuppa-whuppa" disappeared above about 35mph. Probably because the centrifugal force keep the rods against the rod mains. At 55mph it did not "knock" - just fail I guess.

This one probably qualifies as a "Model A Story." Not quite to the level of "Grapes of Wrath" bacon rind - but almost.

Joe K

06-17-2019, 11:07 AM	#9
Joe K Senior Member Join Date: Jul 2010 Location: Cow Hampshire Posts: 4,188	Re: Checking rod and main bearings The "whuppa-whuppa" sound I referred to earlier is (was) an extreme wear signal. I should not have been running that engine at all with that potential for failure. But I was young and stupid then. Now not so young. Funny though - the "whuppa-whuppa" disappeared above about 35mph. Probably because the centrifugal force keep the rods against the rod mains. At 55mph it did not "knock" - just fail I guess. This one probably qualifies as a "Model A Story." Not quite to the level of "Grapes of Wrath" bacon rind - but almost. Joe K __________________ Shudda kept the horse.