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radiator cap. #365830 04/04/16 09:02 PM
Joined: Jul 2014 Posts: 59 MN Bobsmanstuff OP Shade Tree Mechanic
OP Bobsmanstuff Shade Tree Mechanic Joined: Jul 2014 Posts: 59 MN	I just had my radiator core on my 46 Fleetmaster replaced with a more efficient core and kept the top and bottom of the old one. The old one had a non pressure cap. Should I use a pressure cap on the new one?

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Re: radiator cap. Bobsmanstuff #365836 04/04/16 10:19 PM
Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi. Chev Nut ChatMaster - 25,000
Chev Nut ChatMaster - 25,000 Joined: Jan 2002 Posts: 30,701 Likes: 141 West Allis,Wi.	The 1948 was the first year to use a 4 pound pressure cap. The 1948 Engineering Manual says the neck was revised so a pressure cap could be used. You could try one and see if it holds pressure tested by the hoses getting hard to squeeze when hot. The 4 pounds will raise the boiling point to about 220 Deg at sea level. Gene Schneider

Re: radiator cap. Chev Nut #365849 04/05/16 06:01 AM
Joined: Jul 2014 Posts: 59 MN Bobsmanstuff OP Shade Tree Mechanic
OP Bobsmanstuff Shade Tree Mechanic Joined: Jul 2014 Posts: 59 MN	Thanks

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