Re: Cooling, Pressure, and Caps

Sun Oct 28, 2012 6:00 pm

All of my long stripe cubs have pressure caps on them , no problems with them what so ever,more hp may have needed a little more cooling , however I would not use one on a early model cub

Re: Cooling, Pressure, and Caps

Sun Oct 28, 2012 6:03 pm

challenger wrote:The discussion on pressurized cooling systems is all valid and interesting, but I still wonder how many work situations today's Cubs are subjected to that necessitates gaining a few more degrees of cooling capacity beyond that provided by the unpressurized system. The most important items are making sure your radiator and internal engine water jacket are clean, using a good rust inhibitor anti-freeze, and maintaining the proper coolant level in the radiator. Considering the age of the Cub, including the radiator and gaskets, it is my opinion that most owners will experience less trouble overall if they stay away from pressurizing their system.


Can't agree with you more, the reason both my old cubs have had their 7 pound pressure caps that were installed by the previous owners modified.

With the ratio of cooling capacity (onboard coolant reserve, core size, and air flow) to cubic inches of displacement, one would think the engineers had a good grip on the maximum amount of heat that could be produced under full load on a hot day but as previously brought to light, horsepower hungry attachments not originally available and thin air in the mountainous regions caused the engineers to rethink the possibility of the points between hot and boiling had become too close, making the change to the pressurized cooling system.

Re: Cooling, Pressure, and Caps

Sun Oct 28, 2012 9:26 pm

WITH HARD WORK-----THIS IS WHEN I RUN A 16 # CAP ON MY CUB -------THEMO-NUTHING STARTS TO WORK JUST
AS THE LIQUID GETS CLOSE TO BOILING POINT-----THIS IS WHEN THE LIQUID STARTS TO MOVE THROUGH THE
SYSTEM--------THIS NEW GAS WORKS BEST WITH A HIGH TEMPRATURE ENG.------WITH LIQUID UNDER PRESSURE IT
WILL GIVE UP THE HEAT QUICKER-----THUS SMALLER RADIATORS FOR MFG..----MY $0.08


GOOD LUCK
LOMBARD----SC----