Re: 1934 eight cooling system

Posted by Owen_Dyneto On 2022/10/3 14:50:14

Wish I could help more. If the crack you found in the head was in an area exposed to combustion forces, I doubt your JB weld could hold up. If it was in a surface that just faces against the gasket and only has to retain water under gravity force it may well last for a time.

Re your #1, confirming that the Sylphon itself as installed in the top radiator tank has absolutely nothing to do with coolant flow.

After 88 years, I would almost certainly expect your radiator core has been replaced. If not, it's almost certainly suspect. I have an original 1100/1101 radiator out in the garage, I don't see the usefullness but if you think some photos would be helpful let me know.

You can do a meaningful radiator flow rate test without that equipment shown in the factory letter. Remove both hoses and cap off the upper tank outlet. Cap off the overflow tube at the top or bottom. Fill several containers of known volume with water, rig some funnel at the top, and see how many gallons of water the radiator can pass in a given amount of time.