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W123 rad options to hide/replace overflow bottle - Printable Version

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+--- Thread: W123 rad options to hide/replace overflow bottle (/showthread.php?tid=5763)



W123 rad options to hide/replace overflow bottle - bricktron - 08-07-2014

want to stop seeing the overflow bottle. along with staying in cool climates, i am looking into a rad swap, plus either a siphon recovery bottle or that fancy non-expansive coolant they now have.

i have a turbo 300D setup right now. tried to put in a 240D radiator and nonpressurized overflow bottle, but didn't realize the oil coolers were different too, so i had to stop until i get a 240D cooler.

do all the rads have the extra lower section for (i think) auto trans? has anyone come up with another use for it?

are NA 300D rads/coolers different from the 240D ones? any other candidates to consider?


RE: W123 rad options to hide/replace overflow bottle - Simpler=Better - 08-07-2014

I always cap the transmission cooler holes to keep junk out. Some offroad guys use them to heat water on the campsite for bathing Smile

You can get a radiator cap that splices into the large radiator hose, allowing you to use a regular hidden non-pressurized coolant bottle.

With an electric fan, people have said that it rarely kicks on-so the assumption is the standard radiator is properly sized.


RE: W123 rad options to hide/replace overflow bottle - bricktron - 08-08-2014

right on. that rad cap is just what i need. i looked for such a part before without success and i guess i will look again as it's so much simpler {tm}. i am guessing the hose splice thing provides a fill stem as well as a pressure valve - never sure how i could fill this radiator without the pressure bottle.


RE: W123 rad options to hide/replace overflow bottle - Simpler=Better - 08-08-2014

There are multiple options and retailers, here's jegs cap:
http://www.jegs.com/i/JEGS-Performance-Products/555/53098/10002/-1

[Image: 555-53098.jpg]


RE: W123 rad options to hide/replace overflow bottle - bricktron - 08-08-2014

ordering. thanks S=B.


RE: W123 rad options to hide/replace overflow bottle - bricktron - 08-13-2014

i found a filler from a dodge which i think will work. already have one of these:
http://www.jegs.com/i/JEGS+Performance+Products/555/511000/10002/-1
[Image: 555-511000.jpg]

can anyone tell me how the intake and outlet are supposed to be plumbed up to the hose filler barb? i thought there was going to be just one hose for both directions of coolant flow (i.e. either overflowing or being sucked back to the rad, depending on temperature).


RE: W123 rad options to hide/replace overflow bottle - Simpler=Better - 08-13-2014

Plumb the bottom one to your overflow port, and the top one somewhere it can vent.


RE: W123 rad options to hide/replace overflow bottle - bricktron - 08-13-2014

so complicated!! thanks again.