I have always gone 60 to 80 thousands with a crank scrapper. The closer you get it without it hitting the better it will work.
Crank scrapers and knife edging a crank on a 4000 to 5000 rpm engine is a WASTE OF TIME!!!
I wouldnt even think about it till 6500 rpm, and wouldn't do it till 7000.
If your building a 8500 rpm dry sump motor then its a good idea
Crank scrapers and knife edging a crank on a 4000 to 5000 rpm engine is a WASTE OF TIME!!!
I wouldnt even think about it till 6500 rpm, and wouldn't do it till 7000.
If your building a 8500 rpm dry sump motor then its a good idea