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After overheating and changing out the thermostat I was still loosing coolant. I pressurized the system to 16 psi to look for leaks. I could hear a leak and used soapy water to confirm the location. The top of the non filler side of the radiator appears to have a pin hole in it. It was losing about 1/2 PSI in two minutes. When I fired it back up the return coolant line on the turbo was also leaking. I am not sure if my pressure test caused this or maybe increased the leakage rate. I ended up using a 20" long 5/16" brake line which was exactly the right length for replacing the supply and return lines. I also used rubber trans cooling hose to connect to the feeder rail and block. So far this is working. My main concern is the rubber hose. The hose I replaced was orange, two layers, highly fibrous, and I am guessing very high temp. Does anyone know where to find this?
Chris L. Klein
'72 Chevy Malibu
'88 TC
'92 Chevy Corvette
'08 Chevy Silverado
'08 Buell 1125R
'72 Chevy Malibu
'88 TC
'92 Chevy Corvette
'08 Chevy Silverado
'08 Buell 1125R