Re: Redline/Maximum Continuous Operating RPM - Packard 6 Cylinder Engines

Posted by PackardV8 On 2016/2/24 7:52:27

The prroblem is to determine at what point of load and or rpm and or forces cause PARTS TO BEND OR FLEX OR TWIST etc.

IF a part can be kept from flexing then it will not break.

IT might be possible to run somekind of test on the individual internal moving parts of an engine to determine at what point of load or force that they begin to flex. But it would require some sophisiticaed equipment to test each part.

Let me put it this way:
It might very well be possible to run the old straight 8 flatheads at 100 mph and maybe 3800 rpm all day long for maybe 2 days in a row. BUT if the rods and cranks have been CONTINUOUSLY twisting or flexing then they will break after maybe 200 to 300 miles.

As for valve and ignition point float that is childs play to correct by using heavier springs. But heavier springs can shorten longevvity of the valve train.