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Does anyone know if our engines have roller bearings on the crankshaft or did they use plain (journal) bearings?
I know there are some roller bearings in the gearbox, but i want to know what they went with for the main crank.
The traditional harley aircooled engines are all using roller bearings.
The reason for my question is the use of the oil Harley recommends, 15W-50, it is a very heavy viscosity for a water cooled engine, but if we have roller bearings on the main crank i would understand why.
Has anyone tried to mount an oil pressure gage on our engines?
If the engine has plain bearings on the crank i would like to test a 5W-30 oil and monitoring the oil pressure during different RPM,s.
I have tried to search for an detailed engine drawing of our Revolution max on the internet, can't find it.
Paul
I know there are some roller bearings in the gearbox, but i want to know what they went with for the main crank.
The traditional harley aircooled engines are all using roller bearings.
The reason for my question is the use of the oil Harley recommends, 15W-50, it is a very heavy viscosity for a water cooled engine, but if we have roller bearings on the main crank i would understand why.
Has anyone tried to mount an oil pressure gage on our engines?
If the engine has plain bearings on the crank i would like to test a 5W-30 oil and monitoring the oil pressure during different RPM,s.
I have tried to search for an detailed engine drawing of our Revolution max on the internet, can't find it.
Paul