Farm Equipment - Radiator/fuel cap

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Radiator/fuel cap

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=22775
Printed Date: 13 Feb 2025 at 3:47pm
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Topic: Radiator/fuel cap

Posted By: GBACBFan
Subject: Radiator/fuel cap
Date Posted: 23 Dec 2010 at 10:34pm

One of my B's has what I would term an outside grasp radiator cap. (The ears of the cap turn and clasp over the outside of the radiator nozzle) Another of my B's have an inside grasp radiator and fuel cap. (the ears of the radiator turn and clasp into the radiator nozzle) I believe all of my gas caps are inside grasp.

Can someone help me with an explanation here? TIA

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Replies:

Posted By: pumpkin man
Date Posted: 23 Dec 2010 at 11:31pm

non presure radiators use the same type cap as the fuel tank only not vented [pre ww2 ] modle Bs Presure type caps [ as you discribe ] lock on to the out side of the radiator filler neck and have a spring and a rubber seal they are rated by poundage presure type caps are mostley the same size the higher the presure the higher the boiling point these caps wont fit fuel tanks [ unles yours has bin modifed with a rad filler neck] presure ratings are stamped o n the top of the cap kep the presure low on old rads 3 to 5 #

Posted By: GBACBFan
Date Posted: 24 Dec 2010 at 8:17am

Another learning nugget, pumpkin man, THANKS!

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"The trouble with quotes on the Internet is that you can never know if they
are genuine." - Mark Twain