Tue Jun 18, 2013 4:00 pm
Tue Jun 18, 2013 4:19 pm
Wed Jun 19, 2013 10:18 am
Wed Jun 19, 2013 10:40 am
Matt Kirsch wrote:Same radiator cap from 1947 through 1979... The Cub was always a non-sealed "thermosiphon" system for cooling, no water pump.
Wed Jun 19, 2013 12:02 pm
bob in CT wrote:Matt Kirsch wrote:Same radiator cap from 1947 through 1979... The Cub was always a non-sealed "thermosiphon" system for cooling, no water pump.
Not a completely true statement. At least three different caps were used including 2 pressure caps. Thermosiphon does not mean a pressure cap cannot be used.
Long Stripe Cubs came with pressure caps as an option, at least as they are listed in the parts book as a "special". (edit) 117536C1 was the standard Long Stripe cap but I am not sure what that is. Mine came with a 7lb cap but it may have been replaced.
The book shows 4 different caps. I know they had 1 in and 3/4 inch deep water necks for a while so that accounted for 2 of the pressure caps.
Not that this matters to the original question- all non pressure from the Factory in the 50's, but I have always had a pressure cap on my 52.
Wed Jun 19, 2013 12:14 pm