Changing the water pump?
Thread Starter
Melting Slicks
Joined: May 2003
Posts: 2,253
Likes: 1
From: Rochester Kent
Changing the water pump?
I have an '81 and there is a noise coming that sounds like a squeeky fanbelt now and again and when the motor is revved hard there seems to be a high pitch whine that is coming from the belt area. I think this is the water pump.
How easy is it to change the water pump on these motors?
Thanks
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
Re: Changing the water pump? (standup)
Are you sure your belts aren't slipping?????
Melting Slicks
Joined: Jul 2002
Posts: 3,128
Likes: 3
From: Deltona (son of Deland and DAYTONA) FL
Re: Changing the water pump? (Pauld)
mine made the same noise with only the alt belt left on. I replaced the pump with a high flow Stewart pump and it went away. Also dropped the temps by 30 degrees.
The replacement isn't too hard. You'll have to loosen your P/S and A/C belts. My alternator adjusting bracket is held on by one of the water pump bolts, so I took out the alternator to give myself more room. The A/C bracket fits behind the pump on the other side, so you'll have to remove one or 2 bolts from the compressor mount as well. Four nuts hold the fan and fan clutch on, then 4 bolts for the water pump. You'll probably have to change the studs that the fan clutch fits on from the old water pump to the new one. Also any heater hose fittings or plugs from the old one too. There is an extra outlet on the top of the Stewart pump that I bought a brass plug for from a local auto parts store.
It's not a bad job at all. :smash:
[Modified by isosceles, 6:51 AM 7/22/2003]
The replacement isn't too hard. You'll have to loosen your P/S and A/C belts. My alternator adjusting bracket is held on by one of the water pump bolts, so I took out the alternator to give myself more room. The A/C bracket fits behind the pump on the other side, so you'll have to remove one or 2 bolts from the compressor mount as well. Four nuts hold the fan and fan clutch on, then 4 bolts for the water pump. You'll probably have to change the studs that the fan clutch fits on from the old water pump to the new one. Also any heater hose fittings or plugs from the old one too. There is an extra outlet on the top of the Stewart pump that I bought a brass plug for from a local auto parts store.
It's not a bad job at all. :smash:
[Modified by isosceles, 6:51 AM 7/22/2003]
Race Director
Joined: Apr 1999
Posts: 15,145
Likes: 477
From: NM
Re: Changing the water pump? (isosceles)
mine made the same noise with only the alt belt left on. I replaced the pump with a high flow Stewart pump and it went away. Also dropped the temps by 30 degrees.
with the Stewart pump. Installed one on my C4 and it made a huge difference in cooling. Only way to go.
tom...
Instructor
Joined: Jun 2001
Posts: 174
Likes: 3
From: Ann Arbor MI
Re: Changing the water pump? (Tom73)
If the bearings on the water pump are really going bad, you should see a steady drip out of the weep hole. If you do have to change the water pump, look at it as an opportunity to do a little engine detailing - painting the fan, pulleys, mounting brackets, and anything else you can find in there.
Melting Slicks
Joined: Jun 2002
Posts: 2,609
Likes: 1
From: Behind the wheel of a large automobile
Re: Changing the water pump? (A2Shark)
Before you start tearing into too much, that high pitched whine may be your power steering pump, and most of them whine. Try removing the P.S. belt, see if the noise goes away.
