Radiator exploded!

volkswagen
corrado

#1

Car in question: VW Corrado SLC 2.8L VR6.



So I just finished up a motor swap in this car, and everything was going swimmingly (save a couple minor setbacks) I was test driving the car around my neighborhood to work it up to operating temperature to make sure everything was ok. The car seems a bit lethargic and has a bit of valve tap around 2.5k. It does feel a bit bogged down though. As soon as the radiator fans came on, I hear a loud bang. Coolant was spraying out of the actual radiator, somewhere behind the radiator fans (I couldn’t see exactly where it was spewing from) Anyway, I towed her home with no coolant anywhere as it left it’s mark all over the street. My question is this: Could this be simply a bad radiatior, or should I look at the entire system to see if a thermostat or something is faulty? Could this possibly be the work of a bad head gasket?


#2

Make model and year please.


#3

JEM, it’s a '92 VW Corrado with the VR6. While it might just be a bad radiator, it could also be a blown head gasket. Was this a new, rebuilt, or used engine? Any known history on it?


#4

Did anything plug up or block off the passage to the overflow reservoir, or for the overflow drain from the reservoir? Is sounds like the radiator overpressurized.


#5

Given the info is it possible the fans shredded the radiator?


#6

Over-pressurization will blow a hose before it will blow the radiator…


#7

Point.