Any alternative Coolant reservoir bottle for closed style

Topgun514

Adventurer
Just as the title says, my Bottle just explodes after each use now (the caps and threads are worn) but Junkyards are closed and my Jeep intuition tells me I can use something else or make something heavy duty from scratch.

Is there any substitute bottle or anything to mock up?
 

TOTJ

Adventurer
Have you tried a Hot Rod or Muscle Car parts place. If I remember correctly a few weeks ago I was in Hawaii Racing and they had some Red, Blue
and Silver Tanks bade out of billet. A little bling for me but they did look
heavy duty.
 

max adams

Observer
VW makes a strong one with a good solid cap. Its round so you may have to get creatve with mounting but cheap and plentiful.
 

4xdog

Explorer
I've had good luck with the replacement bottle from Quadratec for my 1988 XJ. Same design as the original, but better durability.
 
Last edited:

bryson

New member
I have put in the '91+ radiator and overflow bottle in in place of the crappy closed system... Not as cheap as a replacement bottle, but it sure lasted a lot longer.

I have also used the Quadratec/Crown bottles in the past with decent luck. And they're cheap.:)
 

HenryKrinkle

Observer
In my experience it's the cap that fails on Renix XJ's. It hits the hood when the bottle expands and the threads strip out.

There is a Stant brand green cap made for mid-80s Volvos. Here's a quote from a "Joe Peters" on another forum:
Use a Volvo 740 2.3 L engine cap on the pressure bottle, Stant part number 10244. It will seal tightly on the bottle, OEM or aftermarket, it sits lower so it won't impact the underside of the hood when the pressure bottle expands and that will reduce cracking in the pressure bottle, and lastly it has a higher pressure rating and will raise the boiling point of the coolant.

I got mine from Advanced Auto for maybe 10 bucks.




You could look through a junkyard for a metal pressure bottle. I know there were some larger Mercury or other car that used them into the mid-90s.
 

OwyheeMagpie

Adventurer and Explorer
I just got a XJ replacement one, fits right in, has a standard style cap, not a thread on and its all fabricated aluminum. Its about 125 bucks plus shipping and I got it from MacsRadiator in Oregon.
 

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