Reply to "news fans with or without shroud"

To use a shroud on a stock brass radiator, you must use some sort of method to hold the shroud lightly against the core. I once made a dual fan sheet metal shroud that used 4 tiny sheet metal screws into a flange surrounding the core. My current aluminum rad & plastic shroud uses home-made strap-clamps. The fasteners need not be structural since when the fan(s) are on, the suction created presses the shroud tightly against the core.

Second, you must cut the water pipe elbows off the rad and add in short sections of hose to extend the in/out pipes back about 2", so as to clear the shroud & fan bodies. Aftermarket Pantera rads do not usually have elbows, so in that case, two 90 degree 1-1/4" copper sweat-solder fittings with extension hoses on the straight stubs work fine & are corrosion proof.

Do NOT use tie-wraps to hold ANYTHING to the core! Nylon tiewraps are much tougher than either copper or aluminum radiator tubes and will quickly saw through them with vibration, scrapping the radiator. Why some suppliers include these dangerous things with their shrouds, I have no idea.