Installing an Edelbrock Water Pump - Cooling Your Jets

We mentioned how close the P/S pump pulley was to the pressure hose earlier. From the photo, it looks like it rubs on the hose, but it really has .125 clearance hose-to-pulley. We were able to modify the 90-degree bend enough to install an OE '82 Corvette hose. Whatever you do, don't put the hose in a bind. The hose will have an early failure if it's twisted and under stress.

The looped 31/48-inch steel tube is an inexpensive but effective P/S fluid cooler. We install the coolers with the upgrade to lengthen seal life in the P/S control valve and ram. If you're using a rack-and-pinion conversion, the cooler will also prevent groaning from the pump. The cooler is installed in-line with the 31/48-inch return hose.

The Nippondenso A/C compressor is now in place and is basically in the same place the original compressor was. This A/C compressor has no vibrations and is efficient when using R-134a refrigerants. The compressor bolts to the side of the bracket, making it easy to remove and install. The only failure we've seen with this assembly in 10 years is the A/C drive clutch, which is totally replaceable.

This brace between the water pump and A/C compressor bracket is often left off or thrown away. The bracket uses the bolt that goes through and retains the compressor, then attaches to the water-pump stud for very important support. When these braces are omitted, vibrations and major failures occur.

We spoke of the A/C compressor manifold fitting earlier. We used an old compressor block, cut the tubes off, and found the correct fittings that would work. Once we found the pieces, they were orientated, then welded in place. A local A/C specialty shop can connect yours if you don't have the equipment.

The tensioner pulley assembly is close to the lower radiator hose, so we placed a piece of high-heat-reinforced rubber to protect the hose. On some cars, the hoses are closer than others, so be sure to use some kind of guard to protect the hose. The hose coming in contact with the tensioner won't hurt it. The problem is the tensioner arm moves around under load, scraping the hose.

The job is now done-time to cruise!