1972 Mach 1 Overflow Tank

[Ingallman75]

Hi Gang,

I have a 72 Mach 1 and I'm sick of leaving coolant puddles after shutting the car down.  Want to add a overflow tank but there is no room next to or behind the radiator (I have a Champion Radiator with 2 big thermo fans)

Does anyone have advice as to where I could mount one at all?

Thanks in advance

Dan

[robster]

Can you send photos.  Owner of a 73 Mach 1.  A/C car with large radiator and has a hose extending from the neck of the radiator cap filler to the ground.  Rarely leaks water as the cap spring is a high pressure one.

[Ingallman75]

Can you send photos.  Owner of a 73 Mach 1.  A/C car with large radiator and has a hose extending from the neck of the radiator cap filler to the ground.  Rarely leaks water as the cap spring is a high pressure one.

Hey Robster, what cap psi and brand are you running? I currently have a Champion one that is rated 14-18psi which I think is on it's way out.

[AussiePhil]

Hey Dan,
With your Champion radiator it will probably have a recovery type cap.
You do need to fit a recovery tank somewhere!
Doesn’t need to be that close, the vacuum will recover some coolant.
Cheers Phil.

[unilec5544]

You can fit one in cavity infront of the radiator. Check 7th pic down.



http://1969stang.com/forum/index.php?/topic/57798-radiator-overflow-tank/

[Ingallman75]

You can fit one in cavity infront of the radiator. Check 7th pic down.



http://1969stang.com/forum/index.php?/topic/57798-radiator-overflow-tank/

Thanks mate. Will have to do something similar. My cap is on left hand side of car so will need to probably do it on that side so it is reasonably close. Cheers for the help!

[Ingallman75]

Hey Dan,
With your Champion radiator it will probably have a recovery type cap.
You do need to fit a recovery tank somewhere!
Doesn’t need to be that close, the vacuum will recover some coolant.
Cheers Phil.

Hey Phil,

Just was thinking that if I changed the cap to a non recovery one, would I need the overflow tank?

Cheers

Dan

[AussiePhil]

Hey Phil,

Just was thinking that if I changed the cap to a non recovery one, would I need the overflow tank?

Cheers

Dan

Hey Dan,
I’d be looking at a recovery tank like the others boys have shown.
Mine is only about 50mm diameter and 300mm long.
Once the level settles it never drips.
It sits right next to my radiator.
It really doesn’t take up that much room.
Cheers Phil.

[GLENN 70]

Daniel make sure your not topping up the radiator too high . The water level should be around  30 to 40mm down . Check the radiator cap as well and what pressure cap it is and let us know .

[Ingallman75]

Daniel make sure your not topping up the radiator too high . The water level should be around  30 to 40mm down . Check the radiator cap as well and what pressure cap it is and let us know .

Hi Glenn

Thanks for the reply. Okay cool I may have been topping it up a fraction too much as I was told about 1 inch down, where it may need to be just that fraction lower potentially.   The cap I had was the original champion cap which was 14 to 18 psi and the spring doesn't seem that stiff really. I've just picked up a 16 psi one from Supercheap and it feels alot different.

[Ingallman75]

Hey Dan,
I’d be looking at a recovery tank like the others boys have shown.
Mine is only about 50mm diameter and 300mm long.
Once the level settles it never drips.
It sits right next to my radiator.
It really doesn’t take up that much room.
Cheers Phil.

Yeah okay think I'm leaning that way. With my 72 I don't have a lot of room so will need to mount in front of the radiator but can't really go much longer than 250mm or so.  Do you fill the radiator up fully with your system and run a bit in the overflow also?

[AussiePhil]

Hey Dan,
A tank 60-70mm diameter x 200mm long will be fine!
Just fit your recovery tank, join the hose firmly to the radiator and run the overflow tube in a convenient place.
Fill the tank just lower than the overflow, take the car for a run, let it cool without opening the radiator.
Then the radiator will draw coolant (100ml or so) to top it up a bit. The radiator keeps relieving and drawing coolant as it requires. A radiator will never overflow if it is under full. Unless it’s boiling it will spew it out because the boiling agitates the coolant.
Keep an eye on radiator only when the engine is cold! Over wise you’ll interfere with the vacuum effect.
You can check the overflow tank anytime. You should notice the overflow tank full when hot, a little down cold.
I always park my Mustang engine over a large flat plastic tray I bought at an auto shop, it stops the odd dip on the floor.
Cheers Phil.