Aluminum pump housing

[Heck2G14]

motor is a 440  Heres my question.  I got an aluminum waterpump housing.  Since the water pump itself is hidden behind the pulley.  What would be the more serious drawback from placing a regular (cast) waterpump on a aluminum waterpump housing. I have trouble believing the cooling effect is enough to make it a real issue. 

[Rocky]

The only "serious" drawback is that you are placing an old pump on a new housing.  Who knows when it will decide to go. 

My question is why change the housing and not the pump?

[Ghoste]

The fewer areas where you have dissimilar metals meet, I would also think would provide fewer opportunities for leaks.  The aluminum and steel and cast iron are going to all expand and contract at different rates.  I'm likely way off base, but I'd try and add as few changes there as I could.

[Heck2G14]

Very good point Ghoste.  I will stick with an aluminum pump.  I was just inthe mindset that a trip to the local parts store would be a quick fix of a part is basically not visual. but the different metals reacting at different temps that would cause possible damage to the weaker metal is worth the 3 day wait on shipping.  Thanks guys!!!!!!!!