Quote:
Originally Posted by Dave Neptune
Hanley, why not a "O" preassure cap. I have had need of running with no praessure in a few instances. What I did was take a functiong preassure cap and drilled a 1/8 inch hole in it. It still sealed so the coolant level was maintained but without preassure. Might be what you are looking for.
Regards Dave Neptune
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I had an 8 lb cap and I just cut away about 2/3 of the spring. The most pressure I've ever seen on the system is 2 lbs and did not loose any coolant.