I pumped it down last night... and it seems there is still a leak... in both sides.
I also found out that hole was on the hot side, so I'm not sure the JB weld would even hold up to the abuse it would see.
Here is the pump I used. It is a rental from autozone.
Here we have it all hooked up. I pumped it down for about 20 minutes. I didn't bother putting in new vacuum pump oil because this was just a leak test. I figured that is okay.
The pump ran probably 25 minutes. It doesn't look like it in the pic, but the needles on both gauges were pinned at their lowest setting for at least 15 minutes.
And, here we have a picture of the gauges roughly 15 minutes after closing the manifold valves and shutting off the pump. The cold side has a fairly substantial leak, and the hot side is also leaking.
