[Brian]

A catch and recover system requires a recovery cap and filler neck that fits the cap, along with a recovery tank.


Not so in this case....with this style radiator, the overflow tube is mounted at the uppermost part of radiator. If you run the other end of the overflow tube into the bottom of a catchcan, as coolant expands, it will fill the catchcan, as coolant cools, the coolant in the catchcan will by the vacuum created, be drawn back into the radiator; the radiator will always be full to the brim, irrespective of coolant temperature....the secret is that the radiator cap must seal perfectly. I run this setup in my 35, have done for years with zero problems