Hi all, Spring is here and it's time to get back to work on the '37. I was trying to remove this copper tube on the lower right side of the engine. I have both the 3/8 nut and the 1/2 inch nut completely loose but the tube and nuts won't pull away from the block. It seems like there is something going through into the engine and keeping it from pulling away. What does this tube do and what's holding it into the block? I hope I haven't wrecked anything trying to get it apart. Thanks John
