The oil pan bolts have holes and castle nuts, so I assume it's correct to pin them. Is that right?
That is correct, but a pain in the butt. I use lockwashers. Even though not correct, it makes installation and removal easier.
I think it was changed to standard nuts and lock washers with the introduction of the 4-dip pan or there abouts.
Though it makes a pain in the butt even more of a pain, use 7/64" cotter pins here and on the hogshead bolts. They fit the holes and slots a lot more closely and do a much better job of preventing loosening, and the oil leaks that always follow it. Get stainless ones and just spread the ends a little bit rather than a radical bend-over.
If you want to be absolutely authentic, bend both prongs in the same direction.
I like to use Nylon nuts. The look like castle nuts without the slots.
Steve, the 1915 pan has flat edges. By about 1917 when they introduced the wide-nose pan the edge was rolled for more support. On my 1915 I have a set of 1927-1927 pan reinforcing brackets to help hold things together more securely.
: ^ )
There was a discussion years back and some came up with even more cotter pins that are not on this list...
Lockwashers for me. I can sleep at night knowing its much easier to remove the nuts if I have to.
With lock washers, easier to snug up the ones you didn't get tight enough in the first place!
I'm with Ken. To be absolutely original I believe both ends of the split pin are bent the same way, usually down, as if whacked with some kind of tool. There is no way that factory workers would have time to split the ends and bend each in opposite directions. Because they were bent the same way, they were necessarily short so the bend could be as sharp as possible.
Just my two bobs worth.
Allan from down under.
I just finished putting my 26 4-dip pan on after my rebuild I did on it. I used both lock washers below the castle nut, AND cotter pins. No such thing as too safe right?
Id really hate to see all those bolts come out and lose the oil pan. Wouldnt it be easier to safety wire 2-3 at a time?? ws
Keith - I think they call those "Nyloc" nuts don't they? I like them too!