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Old 07-18-2016, 11:10 PM
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Radiator replacement options???

Just wondering of a good replacement radiator to go with...I knew the end of life was near but it's leaking now and I got to order a new one. Anybody happy of a particular one?

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Old 07-18-2016, 11:29 PM   #2
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Aluminum.

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Old 07-19-2016, 02:12 AM   #3
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I run a Griffin aluminum radiator. Its the only one I have been able to cool an AMC V8 with. Its welded...I tried a high dollar one that was epoxied and it didn't hold together very well.
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Old 07-19-2016, 02:50 AM
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Thanks....I think I'll go with aluminum!

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Old 07-19-2016, 08:39 AM   #5
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Griffin Radiators™ Offroad Series Aluminum Radiator | Jeep Parts and Accessories | Quadratec

I'm sticking with my $85 Rock Auto radiator (same one NAPA sells) because my 2.5L has trouble staying hot, much less cooling down.
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Old 08-03-2016, 12:39 AM
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So new radiator in and Tstat replaced(Mopar). I got a gallon of concentrate and gallon of distilled water plus about another gallon(half water, half coolant). Been running appx 15 mins and gauge slightly below 210...look about right?

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Old 08-03-2016, 01:02 AM   #7
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That's the sweet spot
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Old 08-04-2016, 08:37 PM
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So....I haven't had to drive the Jeep since the radiator swap and the next morning found a small puddle, checked under tstat housing, both hoses and all is good there. Which leaves the water pump? Could it be that I was low enough before the swap and never caused the drip? What a pain!!!


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Old 08-04-2016, 09:19 PM   #9
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Did you replace the lower hose? if you didn't the old hose clamp indentation could be off from how it's clamped previously... ensure it clamped using the original indentations as it could leak easily if not.

I use corbin/constant tension OEM clamps so I don't have to deal with the nonsense worm gears
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Old 08-04-2016, 09:23 PM
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Did you replace the lower hose? if you didn't the old hose clamp indentation could be off from how it's clamped... ensure it clamped using the original indentations as it could leak easily if not.
I never removed or loosened the lower hose to the water pump, just the radiator side and it's dry. I was under it with a bright flashlight and mirror trying to find where it was coming from and couldn't!? It stops dripping after I shut it off for a few minutes...

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Old 08-04-2016, 09:27 PM   #11
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Could be residual from the splash shield under the engine during your install it could've collected a pool of antifreeze, other than that it can only be a few places

Lower hose
Upper hose
Thermostat cover
Overflow reservoir
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Old 08-04-2016, 10:05 PM   #12
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Drive a day or two, give things a chance to either dry up or leak more.
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Old 08-04-2016, 10:54 PM   #13
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I have a Stant pressure tester. I think Harbor Freight has something similar.
It is just a pump with a gauge on it that attaches to the radiator in place of the radiator cap. You pump it up like a bicycle pump until about 24Lbs. and if there is a leak it will show.
It's great to use on a cold, non-running engine so that you don't get burnt poking around looking for leaks.

Is it possible that your leaking radiator was actually a leaking water pump? Or something else leaking?
Typically a leaking water pump will drip out of the "weep" hole, just below where the shaft comes out of the cast housing.

The reason it stops leaking after a few minutes is that the pressure in your cooling system (along with the coolant) is escaping out where the leak is.

Your local auto parts store may have a pressure tester to loan you.

What I would do is park the Jeep in the driveway in the evening and rinse the engine off with a garden hose to get rid of all the leaked coolant.
Then in the morning, pressurize the cooling system and search for any green dripping liquid.

Good Luck, L.M.
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Old 08-05-2016, 12:38 AM
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Drive a day or two, give things a chance to either dry up or leak more.
I like this idea...I always keep an eye on the gauge anyways. Maybe it needs to 'purge'?

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Old 08-05-2016, 12:45 AM
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Quote:
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I have a Stant pressure tester. I think Harbor Freight has something similar.
It is just a pump with a gauge on it that attaches to the radiator in place of the radiator cap. You pump it up like a bicycle pump until about 24Lbs. and if there is a leak it will show.
It's great to use on a cold, non-running engine so that you don't get burnt poking around looking for leaks.

Is it possible that your leaking radiator was actually a leaking water pump? Or something else leaking?
Typically a leaking water pump will drip out of the "weep" hole, just below where the shaft comes out of the cast housing.

The reason it stops leaking after a few minutes is that the pressure in your cooling system (along with the coolant) is escaping out where the leak is.

Your local auto parts store may have a pressure tester to loan you.

What I would do is park the Jeep in the driveway in the evening and rinse the engine off with a garden hose to get rid of all the leaked coolant.
Then in the morning, pressurize the cooling system and search for any green dripping liquid.

Good Luck, L.M.
The radiator was in bad shape, it had the green corrosion around the solder joints and a green oxidated stripe on the front, haha. I needed to replace it. I know about the weep hole but it wasn't an issue until I replaced the radiator and tstat. The tstat housing is dry around it. Its kind of a mystery to me. I'm pretty sure my coolant level wasn't as full before I changed the radiator and flushed the block.

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Old 08-05-2016, 01:26 PM
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Weirdest thing last night, I drove about a half mile to a gas station, pumped $20 in, noticed the coolant puddle(6" diameter), drove home and it continued and after a few minutes of idling in the driveway it seemed to stop??? So i shut it off, went to bed. Driveway dried out this morning, started it up, drip started again. Shut it off, went to work in my company truck. I DID notice a very small, SLOW leak from the tstat housing but nothing like the rate coming from the front edge of the oil pan under the pulleys! Could the slow rate up top be accelerated at the bottom, especially when running? I'm just wondering if I need to get a water pump or not. Should I just take the tstat housing off and reset it? I got less than a week to get this sorted out. Feeling frustrated!!!😬 Thanks for all your advice, I appreciate it👍

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Old 08-05-2016, 02:08 PM   #17
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Remove the stat cover, clean off old gasket material, buy new gasket then use one of the following lightly applied on the new gasket

Edelbrock Gasgacinch Gasket Sealer
Permatex Indian Head Gasket Shellac
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Old 08-05-2016, 02:56 PM
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I will but I'm getting considerable more coolant dripping from behind the belt and lower pulley. If I replace the water pump, am I ok with one from Napa or should I get Mopar? Also going to replace both upper and lower radiator hoses.

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Old 08-05-2016, 03:14 PM   #19
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For cooling Mopar is the best, pumps should be available... however hoses might be a hit or miss.
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Old 08-05-2016, 03:35 PM
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Crap! $202.00!!!

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Old 08-05-2016, 03:51 PM
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I'll take my chances with a Napa or Carquest water pump for $30. I'm spending more than is coming in these days..some good reviews on them too.

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Old 08-05-2016, 06:19 PM   #22
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Make certain to get the proper water pump for your Jeep.

"V" belts use one version and serpentine belts use a different (reverse) version. Your 1992 should have a serpentine belt, so your replacement water pump should have a "R" on it.

I would go with the NAPA pump.

Good Luck, L.M.
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Old 08-05-2016, 06:27 PM
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Quote:
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Make certain to get the proper water pump for your Jeep.

"V" belts use one version and serpentine belts use a different (reverse) version. Your 1992 should have a serpentine belt, so your replacement water pump should have a "R" on it.

I would go with the NAPA pump.

Good Luck, L.M.
Thanks Lucky, yes, serpentine. May get one of those also😀

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Old 08-05-2016, 11:26 PM   #24
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I have always liked CSF radiators i have used them on wranglers and XJ's and have been very happy.

For water pumps i am running a flowkooler on my YJ it's been on there for the past 10 years. I dont drive it a whole lot but when i do drive it i drive it hard. I think Flowkooler uses GMB water pumps and rivet a plate on the impeller they look identical.
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Old 08-08-2016, 01:23 AM
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Well, finally got around to finishing my water pump install, new hoses, thermostat, and new serpentine( I noticed some very small cracks). I got to say I'm very happy- no leaks and temp is stable!👌 Thanks all...I believe my leak was from the weep hole. There was a nice, old discolored trail below it.

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