Pressurized coolant tank swap???

[Lil-Pony]

Just wondering if any one has done this. I would think the tank would need to be the highest point in the system and would it matter what hose, upper/lower, you put the T in to plumb it in. would you also need a couple pound higher cap for the radiator, and match the pounds on the tank cap for the old radiator cap.

 

[RonD]

What is the goal of adding an expansion tank vs existing overflow tank?

The "T" would need to be at the highest point of the flow, so any air would be sent to expansion tank.
Existing rad cap would need to be higher pressure than it is now, or you can get "blanks", no spring it just seals the cap opening, current rad cap would be put on expansion tank.

Expansion tanks are usually only used when radiator placement needs to be below engine height, so a rad cap/overflow wouldn't be able to purge air, these rads usually have no "cap", the expansion tank is the high point.

One is not "better" than the other.

Avoid copper expansion tanks, they crack after repeated heating and cooling, just like the old copper rads did

 

[85_Ranger4x4]

If you want to be able to have a "reserve" tank in your first gen that you don't have to fill via a 3/16" hose the tank from a second gen Ranger/Bronco II or first gen Explorer is an easy swap. Just gotta drill a couple holes, the windshield pump plugs right in... easy upgrade.

 

[Mark_88]

I swapped a coolant reserve/washer fluid container from a 3rd gen...just had to cut off the gen 1/2 washer motor connector and splice in the one for the 3rd gen...works much better and the washer pump is actually better located than the first/second gen was so I'd imagine less prone to getting fried.