1939 Six, hole in back of block is for???

Posted by jwblazek On 2019/10/22 19:21:32

Got my engine back from the engine shop today. Looking over it with the engine builder, I asked what came out of that hole.
He said he had no idea.

I am 99% certain I did not remove anything from this ~ 5/16" un-threaded thru hole into the valve galley.

I suspect that when I pulled the engine out, it was caked with gunk and I didn't see the hole. Anyone know what this hole on the back of the block is for? Larger 1" threaded hole on the right goes to the cranck case breather

Thanks in advance

John

Attach file:

---

  (65.15 KB)