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Radiator top split.

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Old 08-30-04, 12:10 PM
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Question Radiator top split.

The car has not been driven since Thursday and has never been over heated.
I go to start it up and it goes hot, I turn it off and there is coolant pouring out the top of the radiator. It's the original radiator with the plastic top and apparrently it split over the weekend. Anyone else have a spontaneous self-destruct like this before?
Old 08-30-04, 12:13 PM
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On top of the radiator nearest the bumper, or at the filler neck near the engine?
Old 08-30-04, 12:19 PM
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top of the radiator nearest the bumper
it is non repairable
a 2 pass all aluminum radiator is on the way
Old 08-30-04, 12:24 PM
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Well, looking at my rex just now, the filler neck assembly and cap looks exactly like the assembly at the top of the radiator. Does the split look like this...? Or similar...

Old 08-30-04, 12:25 PM
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Doh =\

I thought it was the plastic piece that was cracked in your case. If it is, that can be repaired.
Old 08-30-04, 12:27 PM
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Check your thermostat while the car is down. My rad split too and it was a case of a failed thermostat.

B
Old 08-30-04, 12:35 PM
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Originally Posted by rxse7en
Check your thermostat while the car is down. My rad split too and it was a case of a failed thermostat.

B
damn good idea
Old 08-30-04, 12:37 PM
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Originally Posted by 7th Heaven
Doh =\

I thought it was the plastic piece that was cracked in your case. If it is, that can be repaired.
its not cracked it split wide open, I think the 14yr old plastic just gave up
plus I found the replacement radiator for a reasonable $225
Old 08-30-04, 12:47 PM
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www.coolradiator.com
Old 08-30-04, 12:53 PM
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Originally Posted by rxse7en
so noted for future reference, I went ahead and ordered a new thermostat a few minutes ago, it's probably original too.
Old 08-30-04, 01:07 PM
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Mine did excatly the same thing
I filled it in with Ultra Black RTV and it held for a few months.

Then . . .


BLAM!!!!!! It EXPLODED, huge crack, the entire top split completely open.

I reccomend getting a new Rad cap while you are at it Mazda OEM!
Old 08-30-04, 01:14 PM
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I'll have to see what comes with new radiator, I really appreciate all the suggestions guys!
Old 08-30-04, 01:21 PM
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I clarify: Mazda OEM thermostat as well
Old 08-30-04, 01:25 PM
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Originally Posted by Tofuball
I clarify: Mazda OEM thermostat as well
I am getting OEM cap if need be and definately OEM thermostat
and definetly NOT the Mazda OEM radiator - they (as in Mazda) quoted me $1200
I'll get the superior radiator for $1k less thank you.
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