Fernando Mendes Posted August 10, 2021 Report Share Posted August 10, 2021 I do not have the original B3-B radiator cap.Which type of radiator cap(pounds)?Regards.Thanks. Quote Link to comment Share on other sites More sharing options...
Tooljunkie Posted August 10, 2021 Report Share Posted August 10, 2021 4. These cooling systems werent designed to hold a lot of pressure. 1 Quote Link to comment Share on other sites More sharing options...
Bluzhog53 Posted August 10, 2021 Report Share Posted August 10, 2021 Yep…believe mine was 3-5 lbs tops. Definitely don’t need to go any higher. Quote Link to comment Share on other sites More sharing options...
bkahler Posted August 10, 2021 Report Share Posted August 10, 2021 Zero pressure. They are NOT pressurized systems on the B3Bs. I just went through this with my truck. 1 1 Quote Link to comment Share on other sites More sharing options...
JBNeal Posted August 10, 2021 Report Share Posted August 10, 2021 additional information - flathead radiator cap identification 1 Quote Link to comment Share on other sites More sharing options...
Fernando Mendes Posted August 11, 2021 Author Report Share Posted August 11, 2021 Ok Thanks guys.Regards. Quote Link to comment Share on other sites More sharing options...
ggdad1951 Posted August 11, 2021 Report Share Posted August 11, 2021 10 hours ago, bkahler said: Zero pressure. They are NOT pressurized systems on the B3Bs. I just went through this with my truck. correct, the drain tube is below the seal point on the cap...atmo pressure system. Quote Link to comment Share on other sites More sharing options...
tinlizzy Posted September 4, 2021 Report Share Posted September 4, 2021 I found my low pressure cap at tractor supply, one used on an old type tractor. Fit perfectly too. Quote Link to comment Share on other sites More sharing options...
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