Did my radiator crack coincidentally after bypassing my heater core?

Evancox

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1995 mustang gt 5.0.First ride after bypassing my heater core coolant started to leak. it sounded like it was coming out around under the overflow container but i couldnt see anything without coolant dripping on my face. Wierd ass coincidence tho, first ride after bypassing the heater core .
 
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Terrorist 5.0

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First ride after bypassing my heater core coolant started to leak. it sounded like it was coming out around under the overflow container but i couldnt see anything without coolant dripping on my face. Wierd ass coincidence tho, first ride after bypassing the heater core .
Unless you broke something by mistake then it is purely by coincidence. Funny how it seems to happen with cars the most no?
 
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Evancox

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Wonder if something is clogged, why it blew out the heater core, and the next weak link the radiator.
Is there a way to test that? Whats should i do because i dont want to buy a new radiator and it blow again lol. I flushed it not even a year ago with some radiator flush and put new fluid in it.i think its the oem radiator my car is a 95 mustanggt
 

95opal

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Sure its not the plastic overflow thats leaking? They are known for getting brittle and cracking.
 

Terrorist 5.0

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isn't there a reducer that needs to go on the inlet of the heater core to restrict flow a little?
There is but I don’t think that would cause a leak, I think it is mostly there to preserve the heater core since it’s not that easy to get to.
 
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Evancox

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Sure its not the plastic overflow thats leaking? They are known for getting brittle and cracking.
i dont think so because it sounded like it had pressure and the radiator was drained of fluid lol.
 
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Evancox

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There is but I don’t think that would cause a leak, I think it is mostly there to preserve the heater core since it’s not that easy to get to.
I had everuthing apart to change it but had noone to help me move the dash so i just put the dash back and bypassed it lol
 

Terrorist 5.0

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you could pressure test the system and find the exact leak, fix it, and see if all is well after that.
 

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