Radiator overflow tank

[DrCharles]

if you keep your rad level a couple of inches low or low enough to account for the expansion then an overflow bottle wouldn't be required.Doing that is probably easier and simpler
..

True, except that a catch-can is required at drag strips...

 

[Jimacuda]

My preference is for the recovery set-up with a easily visible level and downward tank venting.
No fuss, no drips, no hot coolant steam in the face...and I know whats going on without removing the cap, hot or cold.

 

[ChuckDock]

That's why they have lids.

Not all of them do..

 

[ChuckDock]

Depends how sexy you want to get with it, lol.
Mine does not have a lid, but has a manual release valve on it.

 

[skep419]

 

[dartfreak75]

I use an old vintage soda bottle

Hose clamp, piece of slit hose for a mounting bracket
View attachment 1715575956

Mines a Mt Dew bottle! Lol

 

[CRUZE 418]

You really don't need one, none of my three cars has one.

 

[Dana67Dart]

Depends how sexy you want to get with it, lol.
Mine does not have a lid, but has a manual release valve on it

If that tank does not have a topside air hole or tube it is a pressure vessel and your rad pressure is going to be higher than cap pressure

Overflow bottles must have a vent to atmosphere

 

[weebull]

Here's mine that I'm using on my 74 Dart. It fits 92-95 Chrysler minivans. It has a much larger capacity than the Hyundai one. I tweaked the mounting bracket and inlet nipple a little with a heat gun for a better fit. The upper mount lines up perfectly with one of the factory reservoir mounting holes. Probably too big if you have horn up there. I haven't run the hose yet or made a bracket for the bottom for added strength. The factory part number is 4546519. It's discontinued and there's no aftermarket ones being produced but there's a few NOS ones still out there as well as used.

 

[Johnny Mac]

I run these in several cars. The barb is on the bottom so it's truly a recovery tank, and not just an overflow. Engine gets hot, it pushes a few inches of fluid out, when it cools off, it draws it back in. Cheap too.

Dorman 603-001 Dorman Coolant Reservoirs | Summit Racing

 

[Ant]

Here is my cheap overflow bottle, needed it for the drag strip. It's a pepsi bottle that I vented the cap on, never had issues and it passes tech lol.