[Jim Caldwell]

I swap fluids twice a year (Water Wetter in summer, antifreeze in winter) and was wondering if there was an easier way to drain the fluid than disconnecting the lower hose (which requires loosening the radiator, taking off the upper hose, and busting about three knuclkes).

My radiator is off now for my engine swap and I was thinking of having a drain welded in the bottom, but if there is an easier way, I'd like to know it.

 

[hossman]

I haven't done this myself yet, but plan to try it. A friend of mine just recently changed his antifreeze. He says that he disconnected the hose from the water pump and turned the key on and let the pump do the work. I don't know if this is safe for the pump, and as I said, I haven't tried it yet.

Hoss

 

[Adrian]

I think the drain would be a good idea. You will need to fix it so it doesn't interfere with the lower air damn, if you have one. Next time I take mine off I plan on installing one and drilling a hole in the damn.
I don't understand why you change the water so often cause water wetter will mix with antifreeze OK.

Adrian

 

[HogV8]

I installed a drain petcock in the elbow coming out of the pump but there is a small square drain plug on the water pump housing . This plug is on the side towards the engine. There is also a drain plug on the left side of you engine block about behind your exhaust manifold.