340 break in question

krazykuda said

Then why are you talking????




This shows your ignorance...

Rotating mass has intertia... Intertia is momentum... Momentum is equal to Mass * Velocity Squared... Or I = MV**2

Mass is directly proportional to the force, and velocity increases the force exponentially...

At 1000 RPM, your velocity squared is 1000 x 1000 = 1000,000

At 3000 RPM, velocity squared is 3000 x 3000 = 9000,000

9000,000/1000,000 = 9 times

So the momentum and forces go up 9 times at 3000 RPM as they are at 1000 RPM....


That said, 1000 RPM is not idle... Most street engines idle around 800 RPM... There will be good oil pressure at 1000 - 1200 RPM...

Click to expand...

I'm talking because I'm an engineer and have been designing, building, and working on production and manufacturing machines for 30+ years, most of which use plain bearings and all have splash and pressure lubricated sliding surfaces. I'm smart enough to know that there is more pressure applied to surfaces at higher rpm but when the motor is not loaded those forces are not significant. If you have to wait for the motor to get to 180 degrees before coming off idle unloaded, your clearances are wrong, or you are using the wrong oil. We are discussing cam break in, not full operation loads. As others have pointed out, there will be a lubrication shortage to the areas that are supplied by splash and not a direct pressure feed. You do it the way you want, its a free country for a few more days.