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scout
September 8th, 2006, 14:24
Is the radiator coolant overflow botlle, the same in all XJ models ? Mine is a 90 4.0l , so will a newer one will fit ?
Wa Woody
September 8th, 2006, 16:56
No, the coolant overflow bottle has changed over the years. The Renix years 87-90 had the overflow bottle (a closed system) mounted on the firewall. IIRC, the coolant bottle was moved to the fender wall on the HO ('91) model and then to the inside of the fender well on the '97 model. I would search coolant bottle and see different replacements options. One option if you stay with the closed system is a Moroso stainless tank. Eagle has posted info on a few times over the years. Good Luck

Good Info - Searched Moroso and Eagle
http://www.naxja.org/forum/search.php?searchid=1147238

Woody
otto
September 8th, 2006, 19:43
Quadratech has them with cap for twenty bucks.

http://www.quadratec.com/products/52449_1493.htm

Closed cooling system works fine as long as it holds pressure and is well maintained. My 1990 is on it's fourth bottle at 298K miles.
Flyfisher
September 8th, 2006, 20:39
Quadratec is the best deal...at the dealer the bottle alone will cost close to $50. I know...have done three in the time I've had my '89 XJ. My advice..when you need to order something from quadratec....include an overflow bottle to save on shipping.
RichP
September 8th, 2006, 20:52
If you have the closed system with the plastic pressure bottle and cap [referred to as the turtle] you can replace it with another POS plastic one or do a search here on 'surge tanks' and go with a steel/brass/aluminum one. It will take a standard radiator cap but will last forever. Your choice.
Kuasimodem
September 9th, 2006, 08:26
If you have the closed system with the plastic pressure bottle and cap [referred to as the turtle] you can replace it with another POS plastic one or do a search here on 'surge tanks' and go with a steel/brass/aluminum one. It will take a standard radiator cap but will last forever. Your choice.

What he said!

Something like this:D (http://store.summitracing.com/partdetail.asp?autofilter=1&part=MOR%2D63656&N=700+4294924500+4294921541+115&autoview=sku)