Belgian1979vette
Well-known member
This is not for me, but for a work related case I'm going to work on.
The subject is an expensive drag race engine that ran into problems when being used. My cliënt is a factory that does coatings and was asked to coat a specially made pin, consisting of an aluminum core with an 34CrNiMo6 outside. The coating was an Balinit C with 51 HRc hardness.
From what I already know, the pins were galling.
Untill i have seen the engine in question and can post some pictures, what could be possible causes for piston pin galling.
I'm assuming overspeeding, piston kissing the head, detonation...but what else ?
The subject is an expensive drag race engine that ran into problems when being used. My cliënt is a factory that does coatings and was asked to coat a specially made pin, consisting of an aluminum core with an 34CrNiMo6 outside. The coating was an Balinit C with 51 HRc hardness.
From what I already know, the pins were galling.
Untill i have seen the engine in question and can post some pictures, what could be possible causes for piston pin galling.
I'm assuming overspeeding, piston kissing the head, detonation...but what else ?