Paint for aluminum?

[RBHarter]

See Cermichrome aircraft cylinders .
They have the ability to return a .015 over that is out of tolerance to zero with tolerance taper the barrels have been run 2000 hours on moly rings . New rings and piston will often still make tolerance for another 1000 hours . Nitride and chrome won't do that .

 

[Tomme boy]

Is there a brand name for the 615?

Dupont variprime

 

[richhodg66]

Thanks very much.