Water Pump:

[bjperry]

I just rebuilt the water pump in my 1978 150 v6 to include housing, all gaskets, seals, impeller; the kit I purchased from iboats. My question is this: Should all of the water remain contained within the pump, or should some leak to the outside of the pump (not via the water tube discharge pipe)? When I put the whole thing back together yesterday I hooked it up to the muffs before re-attaching the lower unit to the engine. When I turned the water on quite a bit was seeping up in the area surrounding the pump. If I turned the drive shaft by hand it would also pump water up the water tube pipe, but I was alarmed by the occurrence of water on the outside of the pump. I guess if all gaskets and seals are working properly then no water should be able to make its way down into the gear box area, but still it doesn't seem right to me.

Any ideas?

 

[Laddies]

Re: Water Pump:

When the impeller is not turning the water has to go somewhere, hence the leak put it on it will be fine

 

[bjperry]

Re: Water Pump:

Really? So none of it will find its way down into the gear housing (maybe around the shift shaft?). I guess that all makes sense because the water that's circulated through the block falls back down into the exhaust cavity to exit around the prop right? Or at least some of it?

That gives me piece of mind that I didn't somehow screw the whole thing up. I was worried because the pump assembly I bought had a different sized diameter screw hole (the one screw in the assembly as opposed to all of the nuts). So I had to drill it out a little to get the screw to fit into the lower housing. I was hoping I hadn't cracked the assembly (even though I inspected it and found no evidence of cracks). I also thought maybe by widening the hole I'd created a leak.

At any rate if it's okay to have water there and the pump still works I'm happy.

Would you suggest using any gasket sealer or just clean the mating surfaces up sufficiently and bolt it together?

 

[Laddies]

Re: Water Pump:

No, both sides are covered by water