Should 85 Jeep CJ 7 have a coolant overflow? - Page 2 -
LinkBack Thread Tools
post #16 of 19 Old 01-03-2010, 08:08 AM
Registered User
1985 CJ7 
Join Date: Dec 2008
Location: Morrow, OH
Posts: 52
My '85 doesn't have one, but the engine was replaced by the PO and they probably left it off. I'll get one when it warms up in the spring.



1985 CJ7
nitor is offline  
Sponsored Links
post #17 of 19 Old 01-03-2010, 08:44 AM
Registered User
1995 ZJ 
Join Date: Jan 2006
Location: Pocatello, Idaho
Posts: 230
Replacement - Expansion Tank - Auto Parts Warehouse

should be a link to the correct replacement expansion tank for an '84.

'95 ZJ Laredo, 4.0L, Auto, 225K, Forest Grn
'98 ZJ Laredo, 4.0L, Auto, 210K, White
IdahoJeeper is offline  
post #18 of 19 Old 01-03-2010, 01:11 PM
Registered User
1979 CJ7 
Join Date: Jul 2009
Location: Wisconsin
Posts: 47
Of course the 79 didn't have one but I happed to have a tank from a Dodge Avenger so I made a bracket on the fender and hooked up the hose and now I have a tank.

79 CJ 7, 258 I6 TR, T 150, Dana 20, Dana 30, AMC 20 and 31" Uniroyal A/T Tires
Twistedper is offline  
post #19 of 19 Old 01-03-2010, 01:34 PM
Web Wheeler
86cj74.2L's Avatar
2004 WJ 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 11,046
The cap to use with an expansion tank (vented cap) has a small button in the center of the gasket portion.

That button is loose fitting until hot coolant causes it to pull tight agianst the gasket. That is how it vents the air/ excess coolant from thermal expansion back to the tank....When it cools down and the coolant shrinks in volume it draws some of the coolant from the tank back into the rad through that button.
86cj74.2L is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Coolant Overflow tank CJ-7 304 V-8 boomvader Jeep CJ Forum 11 01-05-2010 12:35 PM
Coolant Overflow? sprbeast Jeep CJ Forum 5 09-23-2009 09:25 PM
gas tank overflow billybooster2 Jeep CJ Forum 5 09-05-2008 10:02 AM
coolant overflow hose. spk454 Jeep CJ Forum 5 12-24-2007 08:46 AM
Coolant overflow tank... Goody1231979 Jeep CJ Forum 10 11-01-2007 08:34 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome