Re: Puzzling cooling problem on BN

Posted by lee on November 03, 2004 at 07:33:34 from (24.24.95.246):

In Reply to: Puzzling cooling problem on BN posted by ffolkes on November 02, 2004 at 20:03:19:

Take the radiator to a good radiator shop and have it chemically/professionally cleaned. They will be able to tell you what the story is on the radiator. The radiator must be in good shape for the thermosiphon to work. The theory is warm water rises in the radiator and cold water drops thru the radiator. The process is called convection flow or thermosyphon but all the passages must be open and unrestricted for this to work. If you have re-built the motor with a big bore kit you will have a marginal system at best under work conditions. In that case
you would be much improved to add a water pump.
There can also be a restriction in the block or radiator. You have to start somewhere. I'd start with the radiator. If you've had the machine apart in a barn for a long time there is possibility a mouse has made his home in there.

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