water pump question
Thread Starter
Drifting
Joined: Nov 2005
Posts: 1,795
Likes: 1
water pump question
Just picked up a replacement pump for my corvette
having never replaced one on a GM before.
i need to know does the impeller spin freely or does
it have some resistance?
if its supposed to spin freely then this darn thing is going
back tomorrow.
thanks in advance
having never replaced one on a GM before.
i need to know does the impeller spin freely or does
it have some resistance?
if its supposed to spin freely then this darn thing is going
back tomorrow.
thanks in advance
Team Owner
Joined: Feb 2005
Posts: 32,519
Likes: 1
From: central America
St. Jude Donor '08-'09
If I remember correctly, it shouldn't spin freely, it should turn with the pulley. If it spun freely, how would it pump water? That being said, it should spin smoothly. If there are any big hitches, then the bearing is bad, and I would trade it in, because you'll just end up replacing it anyways.
trw
trw
Safety Car
Joined: Aug 2000
Posts: 3,711
Likes: 43
From: San Antonio TX
You mean that you're holding the pump in your hands and you try to turn the shaft where the pulley mounts? If that's the case, you can turn the shaft but with a good amount of resistance. If the shaft spins relatively freely then the pump seals are gone.
Thread Starter
Drifting
Joined: Nov 2005
Posts: 1,795
Likes: 1
Originally Posted by Mike Ward
It's supposed to have considerable resistance from the friction of the seal.
thats what i wanted to hear, last pump i replaced was on a small block chrysler and it didnt have nearly as much resistance as this one.
thanks guys
