1987 Cherokee Overflow tank - JeepForum.com

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post #1 of 17 Old 04-25-2007, 11:14 PM Thread Starter
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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post #2 of 17 Old 04-25-2007, 11:44 PM
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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.

Completely stock, and keeping it that way...


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post #3 of 17 Old 04-26-2007, 01:52 AM
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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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post #4 of 17 Old 04-26-2007, 09:44 AM
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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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post #5 of 17 Old 04-26-2007, 01:38 PM Thread Starter
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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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post #6 of 17 Old 04-26-2007, 01:43 PM
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post #7 of 17 Old 04-26-2007, 10:43 PM
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sent you a PM on that tank. I'll take some pics of it tommorow and post them.

'89 XJ Laredo 4.0L, AW4, NP242, Dana 30, 35 w/Lock Right, 5.5" lift, 35x12.50x15 Uniroyal m/t
'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

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i sweat your nuts. badly.
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post #8 of 17 Old 10-06-2011, 01:44 PM
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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.

Gardez la Foi
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post #9 of 17 Old 10-06-2011, 02:00 PM
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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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post #10 of 17 Old 10-06-2011, 05:07 PM
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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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post #11 of 17 Old 10-06-2011, 05:16 PM
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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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post #12 of 17 Old 10-06-2011, 05:18 PM
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Originally Posted by mountainjock View Post
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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post #13 of 17 Old 05-09-2013, 10:02 AM
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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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post #14 of 17 Old 05-09-2013, 04:26 PM
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Quote:
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.
Duuuude. Read Post # 10!!!

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post #15 of 17 Old 05-10-2013, 02:10 PM
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Duuuude. Read Post # 10!!!
whoops! good eye. Thanks you
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