Re: Oil Cooler on 1938 Super 8

Posted by Tim Cole On 2015/8/27 15:17:08

You can pressure test it by making up a plate and using a simple blow gun and a regulated air supply. Submerge the unit in a bucket of water. Do not exceed 60 psi, although the thing will probably handle up to 100 psi. A good machine shop could do this if you don't have a compressor.

Another test would be to just bypass the thing and see if coolant shows up in the oil.

If the motor is worn and using non-detergent oil, water will collect in the bottom of the oil pan from condensation. If the motor is using detergent oil it should be emulsified (turned into gunk) if coolant is leaking.