Pro_usa1776
Registered User
So I took my 1989 SC 3.8 liter forged crank to be checked by a local engine builder. It seems that all the mains journals minus the rear were .010”, the rear was .020”. The connecting rod journals were .010” as well. The machinist turned crank main and connecting rod journals to .020” undersize. Said he couldn’t find any bearings. Finally got some king bearings. So my question is, I’ve read not to turn the crank journals more that .010. Is that true? I am also assuming that the bearings he got were for a NA engine and not the SC motor. Is there a difference? What should I do?