Originally Posted by
Roelof
An engine maker here in Holland thinks a pinch (hot piston and cold sleeve during warming up) in combination with current race fuels with a low amount of oil could create a short time cold weld and due the rotation forces again tear it appart damaging the surface.
The PT should have a black coated piston or hasn't it? That coating should give a lower friction.....
Yes.. the piston HAD a black coating.. but that coating is almost completely gone on the exhaust side of the piston.
Well.. I will be extra careful and take special note of warm up process in the future. Just ordered a p/s/r set for the PT and will see how it goes.
Thanks Roelof for taking the time to share your insights. Appreciate it.
Happy racing.
Sam