Originally Posted by DFlintstone

Btw my GF melted the aluminum block in my Vega with 206K on the odometer.

Originally Posted by Radi

Two problems come to mind,
one- pouring water into an overheated engine without letting it cool first causes thermal stress and can crack things.
That's possibly what took out the radiator. I've seen it take out engine blocks.
two- depending on how overfull the crankcase was, when the crank hits the oil it churns it up and aerates it causing air bubbles. That can starve bearings- possibly your knocking noise. Whether or not there is long term damage done, I don't know.
You could find out more with a compression test, a cooling system pressure test and (since you're pulling the pan) checking a couple bearings.

Originally Posted by DFlintstone

There is some chance that having too much oil let the crank froth it up like an egg beater. I'm told that can happen, haven't seen it. If the oil was foamed it might knock. I wouldn't be surprised if some plugs got fouled if oil was flinging all around in there.

Basics, check the plugs, make sure it's clean under the cap. Yea, never bad to know the compression. (if you need to JB weld in a pinch, open the hole/crack a little and mix some fiberglass in the JB). (on the hole is not as good as in the hole). the 4.0 is pretty tough, it may well be fine.

Btw my GF melted the aluminum block in my Vega with 206K on the odometer. "I was just 1/2 mile from home when the light came on" It was 1/2 a mile straight up on a gravel road!

I'm OK with the Jeep being the topic here. Best of luck to you!