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Old 11-30-2011, 12:17 AM   #1 (permalink)
USMC Jimmy
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Water Pump for 6.2?

Hello everyone,
I have a 1983 GMC jimmy with a 6.2. I would like to know how you would know to replace the water pump. And which of the big stores would you buy it from? Pep boys, Napa or Auto Z? And should I stay with the 190 deg t-stat or go to 180? I am new to owning a diesel so any help will be appreciated

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Old 11-30-2011, 12:24 AM   #2 (permalink)
Diaric
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replace it when it starts leaking out of the hard to see weep hole.

stay with the stock 190 tstat. 180 doesn't solve anything and cylinder temps run lower then they should
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well to make your pump retarded, you could let it hang out with me for a day
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Diaric wins thread derailment......
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Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
6.2 FACTS AND ANSWERS Click Here
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Old 11-30-2011, 04:06 PM   #3 (permalink)
ASPHALTVICTORY
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Judgeing by your post Your having overheating problems?

And the 6.2 waterpump has a little more involved than your standard small block

as for the waterpump and wich one to get ive had bad luck with reman parts But (thank god) i havent had any problems with the cooling system yet
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Old 11-30-2011, 08:28 PM   #4 (permalink)
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water pumps arent hard to change. the wife and i changed ours last year all by ourselves and didnt have much trouble. it takes a little time, taking everything off and getting the water pump off. clean the surfaces really well too. i picked up a water pump from oreillys for about $25 and put a decent amount of rtv on it and put it on. having a second pair of hands is very helpful. so they can hold the pump on while you put a couple bolts in. tighten the bolts up real good and wait for the rtv to set up. then come back and finish tightening it down. put all the crap back on (pulley, belts, fan...) and then fill it back up with coolant.
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Old 11-30-2011, 10:08 PM   #5 (permalink)
Gasoline Fumes
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I recently picked up a water pump and thermostat. I got AC Delco parts from the dealer. And they matched RockAuto's prices! $60 for both!
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Old 11-30-2011, 10:12 PM   #6 (permalink)
Smokin82
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Good Luck.
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Old 11-30-2011, 10:39 PM   #7 (permalink)
USMC Jimmy
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Thanks!

Thanks for the info, also I was also wondering on the harmonic balancer? When do you know when its going out? I have read that these engines are notorious for crank failure and I would like to prevent that by replacing the balancer? What do you guys think?
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Old 11-30-2011, 11:41 PM   #8 (permalink)
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take a look at the rubber on the harmonic balancer. if it is cracked/broken/missing then it should be replaced.
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