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Unread 04-25-2007, 10:14 PM   #1
Skaf
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1987 Cherokee Overflow tank

I have to replace my plastic overflow tank and cap atleast 2 times a year to maintain the correct pressure in my cooling system. The plastic starts to expand and the cap starts to leak etc... I have been looking around to see if anyone has made custom tanks that have maybe thicker plastic or a tank made of metal. Somthing to last me longer then 6 months. This is for a 1987 jeep cherokee. Just wondering if anyone else had the same problems and if anyone has any ideas.

Thanx

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Unread 04-25-2007, 10:44 PM   #2
1990JEEPXJ
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i have the same problem. im on the third or fourth tank. im just really tempted to convert to the open cooling system of 91+ and ditch the bottle all together.
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Unread 04-26-2007, 12:52 AM   #3
88_xj_hunter
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I converted my '88 to an open system. On the other two, I had a local racing radiator shop make me a couple of overflow tanks out of aluminum and I'm using a 16 lb cap. Paid like $60 each, but at least no more worries. The shop that did it for me said he's done probably a hundred for Cherokee owners. He has a template already made up and could mass produce them I guess.
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Unread 04-26-2007, 08:44 AM   #4
88XJSport
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Thats funny, im only on my 2nd bottle (recent one put on in 97) and mine still works without problem. But i did see somebody that was selling a metal tank for the closed cooling system, and it is solving all of their problems that you are describing. If i find it ill post back.
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Unread 04-26-2007, 12:38 PM   #5
Skaf
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Hey 88_xj_hunter you wouldnt happen to know the phone number to the race shop that made that overlfow tank for you would you?
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Unread 04-26-2007, 12:43 PM   #6
LEAD_NOT_FOLLOW
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Convert it to an open loop setup.

http://www.jeepforum.com/forum/f11/ultimate-cooling-system-questions-391636/
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Unread 04-26-2007, 09:43 PM   #7
88_xj_hunter
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sent you a PM on that tank. I'll take some pics of it tommorow and post them.
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'88 XJ 4.0L, AW4, NP231, Dana 30, 35 w/Lock Right, 4.5" lift, 31x9.50 SuperSwamper on salvaged 15x7's
'87 XJ Pioneer 4.0L, AW4, NP231, Dana 30, 35 w/ trac-loc, currently stock, 8" lift one piece at a time

[QUOTE=mdonohu1]i sweat your nuts. badly.[/QUOTE]
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Unread 10-06-2011, 12:44 PM   #8
Waldo4
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I found a site that has a metal overflow tank for an 88, but it is $288... Thats a bit over priced I know. I was thinking of having a custom motorcycle place make one. Since it is very much like a motocycle gas tank anyway. But if anyone has a site that has the metal tanks, I would love to get the url for it or an e-mail. Thanks.
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Unread 10-06-2011, 01:00 PM   #9
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Convert it to an open system...especially if you have cooling components that are old anyways and could use being replaced. It's ultimately a radiator, heater valve and hoses with some wiring for the e-fan and you're done.

I've got my system priced out at $320 for pretty much brand new everything (excluding coolant cost).
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Unread 10-06-2011, 04:07 PM   #10
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A simple trick to solve this problem easily is to replace the cap with one specified for a Volvo. It grips the threads on the tank better than those cheapy chinese caps ever thoght of doing, even if the tank is a cheapy chinese one. Napa has them for about $10. It's a 703-1396.
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Unread 10-06-2011, 04:16 PM   #11
mountainjock
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my hood was hitting the top of the reservoir and eventually causing a leak. When I installed my second one, I lowered the mounting bracket. Don't know if your situation is the same.
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Unread 10-06-2011, 04:18 PM   #12
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my hood was hitting the top of the reservoir and eventually causing a leak. When I installed my second one, I lowered the mounting bracket. Don't know if your situation is the same.
Funny you should mention that. The Volvo cap is also a lower profile and is much less likely to contact the hood when the bottle expands.
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Unread 05-09-2013, 09:02 AM   #13
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Does anyone have a part number for that volvo cap? Or at least know what model volvo cap will fit the jeep? No one in town carries replacement bottles or caps for jeeps but I think I may be able to find one for a volvo if I know which cap I'm looking for.
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Unread 05-09-2013, 03:26 PM   #14
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Originally Posted by lawrencecomanch View Post
Does anyone have a part number for that volvo cap? Or at least know what model volvo cap will fit the jeep? No one in town carries replacement bottles or caps for jeeps but I think I may be able to find one for a volvo if I know which cap I'm looking for.
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Unread 05-10-2013, 01:10 PM   #15
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Duuuude. Read Post # 10!!!
whoops! good eye. Thanks you
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