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#1 |
Registered User
Join Date: Nov 2011
Location: Valley Center,CA
Posts: 89
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Water Pump cooling questions
I have a new pump,new 4 core,new 185 thermostat, I dont have my heater core hooked up and both of the small heater hose ports on my water pump capped,I let it idle till it comes up to about 185 and it drops down to about 165on a cool day,on a hot day around town it was holding about 190. I noticed today letting it idle with my radiator cap off when it reaches temperature and thermostat opens the water in my radator isnt flowing the level is just sort of pulsing up and down. Im starting to wonder if I have a reverse rotation pump on there??
Is there anyway to tell without pulling the pump off and taking it apart? thanks jim
__________________
1971 Chevy C-10, 5.3, 4L60E,4.10 gears UNDER CONSTRUCTION Mid size bed conversion https://picasaweb.google.com/1114721...yC10MidSizeBed The basic buildup https://picasaweb.google.com/1114721...3/1971ChevyC10 |
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,622
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Re: Water Pump cooling questions
If you had a reverse rotation pump you wouldn't have temps like that. You'd be overheated . The pulsing is the thermostat opening and closing.
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#3 |
Registered User
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,143
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Re: Water Pump cooling questions
How are you measuring the temp, gauge, IR, mechanical, electrical??? Where is the sender located?
__________________
1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner. 1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components. My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703 |
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#4 |
Registered User
Join Date: Nov 2011
Location: Valley Center,CA
Posts: 89
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Re: Water Pump cooling questions
I just pulled the pump out and took it apart,photos enclosed,,looks to me like it could work in either direction also has 2 bolt patterns on the fan hub my guess its universal?
__________________
1971 Chevy C-10, 5.3, 4L60E,4.10 gears UNDER CONSTRUCTION Mid size bed conversion https://picasaweb.google.com/1114721...yC10MidSizeBed The basic buildup https://picasaweb.google.com/1114721...3/1971ChevyC10 |
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#5 |
Registered User
Join Date: Nov 2011
Location: Valley Center,CA
Posts: 89
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Re: Water Pump cooling questions
I have a Summit mechanical gauge and I have it tap in on the passenger side top of the intake,,,thanks jim
__________________
1971 Chevy C-10, 5.3, 4L60E,4.10 gears UNDER CONSTRUCTION Mid size bed conversion https://picasaweb.google.com/1114721...yC10MidSizeBed The basic buildup https://picasaweb.google.com/1114721...3/1971ChevyC10 |
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#6 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,622
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Re: Water Pump cooling questions
While you got it apart put a wire coil in the bottom rad hose. It'll keep the hose from collapsing and the pump from cavitating.
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#7 |
Registered User
![]() Join Date: Oct 2013
Location: Stockton, CA
Posts: 475
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Re: Water Pump cooling questions
no. water pumps do not work in either direction. I hope that you are going to replace it as long as you have it off. does not look like you have been running proper mix of coolant.
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#8 |
Registered User
Join Date: Oct 2013
Location: Rt 66 Gallup, NM
Posts: 527
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Re: Water Pump cooling questions
I agree, check the bottom radiator hose and make sure it has a wire coil in it, like a spring.
__________________
2005 GMC K2500HD D/A 1993 GMC K1500 2011 Subaru Legacy. 2013 Subaru Outback 1970 C-10 2WD, SWB stepside, 292, TH350, PS, more rust than anything. God is my pilot. ![]() |
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#9 | |
Registered User
Join Date: Nov 2011
Location: Valley Center,CA
Posts: 89
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Re: Water Pump cooling questions
Quote:
jim
__________________
1971 Chevy C-10, 5.3, 4L60E,4.10 gears UNDER CONSTRUCTION Mid size bed conversion https://picasaweb.google.com/1114721...yC10MidSizeBed The basic buildup https://picasaweb.google.com/1114721...3/1971ChevyC10 |
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