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| 5.7 GSi - Circulating Pump Replacement https://www.smwebhead.com/phpBB3/viewtopic.php?f=11&t=16094 |
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| Author: | TX H210SS [ Sat Aug 18, 2018 12:45 am ] |
| Post subject: | Re: 5.7 GSi Circulating Pump Replacement |
I've heard both pumps called circulating.....is it the impellor pump or the main water pump |
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| Author: | LouC [ Sat Aug 18, 2018 1:54 am ] |
| Post subject: | Re: 5.7 GSi Circulating Pump Replacement |
The circulating pump is the old style Chevy water pump on the front of the engine.esay job,sometimes it is a bit tough to get the pulley off. They last a long time; only replace when the bearing gets noisy or leaks. I’m on my 3rd one... |
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| Author: | TX H210SS [ Sun Aug 19, 2018 11:28 pm ] |
| Post subject: | Re: 5.7 GSi Circulating Pump Replacement |
Only tip I have is to throw a towel in the bilge first. It will hold bolts so you can pick them with magnet. If like my jobs you will drop at least one. |
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| Author: | joet [ Mon Aug 20, 2018 8:49 am ] |
| Post subject: | Re: 5.7 GSi Circulating Pump Replacement |
I replaced mine a couple of months ago in my 1998 5.7GSi. The only problem I had was since it was the original pump there was paint drops on a couple of the bolts that prevented a socket to fit on it. |
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| Author: | Graham R [ Fri Aug 24, 2018 5:21 am ] |
| Post subject: | Re: 5.7 GSi Circulating Pump Replacement |
If you have closed cooling, a standard automotive pump is ok. If not, you need the marine one ( which has a stainless backplate and maybe some other bits use corrosion resistant materials as well)/ I changed it on my 1999 GSi. No real problems, I was just thankful I still had my old "imperial" sockets and spanners ! One thing to watch out for; mine had two V belts, not a serpentine belt. The hub that the pulley bolts onto had been pressed a few mm too far down onto the shaft, meaning the pulley was out of alignment with the others on the engine. I couldn't pull it back with a puller, so I had to use spacer washers behind the pulley to bring it forward and into alignment. |
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| Author: | chris268 [ Fri Aug 24, 2018 10:38 am ] |
| Post subject: | Re: 5.7 GSi Circulating Pump Replacement |
YYZ-RC wrote: Graham R wrote: If you have closed cooling, a standard automotive pump is ok. If not, you need the marine one ( which has a stainless backplate and maybe some other bits use corrosion resistant materials as well)/ I changed it on my 1999 GSi. No real problems, I was just thankful I still had my old "imperial" sockets and spanners ! One thing to watch out for; mine had two V belts, not a serpentine belt. The hub that the pulley bolts onto had been pressed a few mm too far down onto the shaft, meaning the pulley was out of alignment with the others on the engine. I couldn't pull it back with a puller, so I had to use spacer washers behind the pulley to bring it forward and into alignment. Thanks Graham! I have the serpentine belt so hopefully no issues. I ordered a new belt as well. Hope to tackle it it this weekend, along with running new new shift/throttle cables. Good luck, hope it goes well for you! Take good pics and notes on the throttle/shift cables, mine sticks a little, not bad, but I could See that in a couple years |
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