Radiator Blew Up Today!

Nissan 350z / Nissan 370z technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
Harbison
Posts: 6
Joined: Tue Jul 12, 2016 5:05 pm
Car: 2007 Altima

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2005 Nissan 350Z Touring Coupe 113K Automatic

Today the upper tank of the radiator split from one side to the other. Owned the car since February. Never overheated but fans have always been loud. Only drove it about 5 miles before radiator upper tank blew. Seems like a lot of pressure on upper tank. Should have popped cap as well as flowing back to the overflow tank. Obviously, I'll have to replace radiator and problably the thermostat too. May need to check fans. Saw on the forum that Nissan had some problems with the radiator fans. Any recommendations? Want to find answers and not just replace parts. Thanks in advance.


amc49
Posts: 1183
Joined: Mon Jun 19, 2017 7:24 pm
Car: '11 Nissan Versa
'17 Nissan Altima

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If the rad core was fairly clogged it could easily pop the top of it loose. Any temp gauge should have told you if it was a stat issue or not.

chasracer2
Posts: 12
Joined: Sun Feb 07, 2016 7:39 am
Car: 2003 GT350

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Let's back up - did you ever notice any other lose of fluid prior to this major one. Normally for the radiator to build enough pressure to pop the tank like that you are looking at compression gases getting into the coolant system. Either there is a head gasket issue, warped head/block area or there is a crack. The last one I dealt with was a cracked cylinder that pressurized the coolant jack. Luck had it that a bottle of Moroso Ceramic Sealer took care of the crack and a new radiator made the car usable again.


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