SBC V8 Water Pump Failure, 3 Styles of Pumps Tested BYPASS THERMOSTAT UPDATE Options

[nick mironov]

My Renegade water pump failed yesterday. The pump impeller is stamped steel and the blades all just folded over or sheared off. I understand that the cast impellers are much stronger, but that not all manufacturer's cast models will fit into the Renegade housing. Anybody have experience with cast impeller pumps that will fit into the Renegade housing?

Since there is no bypass in the Renegade system, Renegade instructions are to limit the motor RPM to 3,000, or less, untill the thermostat opens. I have observed this, but the pump still failed after 5,500 miles. Renegade now makes a bypass kit, which I going to try, but I would still like to get a more durable pump.

Nick

[SLITS]

Here's the deal. I will send a pump (that was imaged) to whomever wants to try it in the housing. It would be the non-A/c pump. We can adjust the impeller depth if it is to deep.

The non-A/C pump has the larger diameter impeller.(4.185" - Pump # 1317). The A/C pump has the smaller diameter impeller (3.500" - Pump #1352). The stamped steel versions should have the same diameter and height as the cast iron impellers.

Gasket mounting surface to tip of impeller is 1.210" on both pumps. Gasket mounting surface to top of fan blade hub is 3.070" on both units.

And for the post that the shaft was to large in diameter, it could have been the big bearing model (don't remember the number now).

Anybody game? If it works, we can sell you the rebuilt proper OEM pump ... cast iron through and through (Shameless plug). Or, if you want the aluminum pump fitted with a cast iron impeller, that can be done too!

Please note that the bearing and seal would be destroyed with removal of the impeller, so the pump would have to be rebuilt as a new seal and bearing would have to be fitted).