03-04-2019, 11:04 PM
"I have often heard this said, but just wondered specifically what causes the harm?
Is it the lack of combustion load on the crank/rods, or something to do with the cam & timing gears?
Dirk "
With an Austin 7 as with most cars it depends on whether the engine is hot or a cold and the rotational speed being used .
Nothing to do with combustion load that I can think of and the cams and timing gears are similarly loaded whether in gear or not unless you exceed the limit of the engine- unlikely with a standard road car.
Over revving when cold is not good - slight 'blipping' to get the engine warmed up should be OK
Is it the lack of combustion load on the crank/rods, or something to do with the cam & timing gears?
Dirk "
With an Austin 7 as with most cars it depends on whether the engine is hot or a cold and the rotational speed being used .
Nothing to do with combustion load that I can think of and the cams and timing gears are similarly loaded whether in gear or not unless you exceed the limit of the engine- unlikely with a standard road car.
Over revving when cold is not good - slight 'blipping' to get the engine warmed up should be OK