Discussion and questions related to the course Practical Engine Building
I am having the white coating scraping away as soon as the crank is spun by hand.
I've cleaned the parts thoroughly before assmebly, using a sae40 weight motor oil for assembly
Is the scrapping off normal? I have been told by my local machinist (after taking it to him over 15 times) taht it's normal and it's because after the first revolution the oil film reduces.
Oil clearance is spot on 15thou across all mains and cons. Used plastigauge and also measured them with a set of calipers.
Please see the attached photos below