So, I finally started on the new race engine build. Rather than putting the old bolts back in, I’ve put in some new ones: this is partially because I didn’t want to put the old bolts in, and partially because I didn’t really take care of all the bolts I took out of the engine and I lost some.
Here you can see the difference between the old zinc plated steel bolts and the new zinc plated steel bolts. I think I did the right thing. The old bolt had actually been cleaned in acetone. IT still didn’t look very nice.