[staleg]

Got my new Weiand Action+ waterpump today, and the aluminum pulley interference with one of the heater hose outlets on the pump, so what do I do? Complain & return is not an option, as I live in Norway.
On the leaky Allstar pump, the samme pulley fit perfect.

Shim out the pulley? The alignment was perfect with the old pump, so I don't want to do that. Unless the pulley on the new pump is too far back, of course.
Carefully grind some off both the pump and the pulley? That's what I think will be best.

Other suggestions?

[alkey]

if you have a chev engine could you have gotten a short water pump in place of a long water pump.

[cdminter59]

What kind of vehicle are you talking about? Also what engine is in it? Post a picture if you can, it would make it easier to know what is happening.

[staleg]

Hi. Sorry.
It's a Chevy small block with short water pump. The new pump is short, too.

I won't do anything more about it, until I have taken the old pump off. Then I can compare them on a flat surface and see in what way they differ.

One more question, while I'm at it: The old pump has 1 water outlet on top were I have put the heater hose. The other heater hose I have fastened on the intake.
My new pump has 2 "heater hose sized" outlets. What are No 2 for? Should I block off that one, or should I route both heater hoses to the water pump and block off the manifoil outlet instead?

[cdminter59]

Which outlet does the pulley interfere with the top or the side one. On the firewall you have two fittings going to the heater coil. The top hose 3/4 goes to the water pump. The bottom hose 5/8 goes to the intake on the left side of thermostat housing. Plug the inlet that is not being used on the water pump.

[cobalt327]

Originally Posted by staleg

Hi. Sorry.
It's a Chevy small block with short water pump. The new pump is short, too.

I won't do anything more about it, until I have taken the old pump off. Then I can compare them on a flat surface and see in what way they differ.

One more question, while I'm at it: The old pump has 1 water outlet on top were I have put the heater hose. The other heater hose I have fastened on the intake.
My new pump has 2 "heater hose sized" outlets. What are No 2 for? Should I block off that one, or should I route both heater hoses to the water pump and block off the manifoil outlet instead?

The hose from the front of the intake at the water crossover or thermostat housing goes to the heater core. It has pressure and the hot water. The return from the heater core goes into the water pump. Use the port that is easiest or doesn't interfere with anything and plug the other port.

[staleg]

Originally Posted by cdminter59

Which outlet does the pulley interfere with the top or the side one. On the firewall you have two fittings going to the heater coil. The top hose 3/4 goes to the water pump. The bottom hose 5/8 goes to the intake on the left side of thermostat housing. Plug the inlet that is not being used on the water pump.

The pulley interfere with the side outlet, that I probably won't use.

[jaw22w]

I had the same problem on a new engine in my hot rod. Short water pump and interference with the pulley on the side heater hose boss. I was able to grind just enough off of the boss to clear the pulley.

[staleg]

Problem solved.
Grinded some of the pump, and 1mm (1/25 inch) of the rear of the aluminum pulley.