• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

Pressurized coolant tank swap???

Lil-Pony

Active Member
TRS Banner 2012-2015
Joined
Nov 6, 2012
Messages
1,085
Reaction score
5
Points
38
Age
28
Location
San Antonio, TX
Vehicle Year
1984
Make / Model
Take a Guess
Engine Size
2.8 soon to be 4bt
Transmission
Automatic
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.
 


Rock Auto 5% Discount Code: BD8D9A3814E19D Expires July 5th, 2022

RonD

Well-Known Member
Joined
Jun 2, 2012
Messages
21,479
Reaction score
4,950
Points
113
Location
canada
Vehicle Year
1994
Make / Model
Ford
Transmission
Manual
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 :)
 
Last edited:

85_Ranger4x4

Forum Staff Member
Forum Moderator
Article Contributor
V8 Engine Swap
OTOTM Winner
TRS Banner 2010-2011
TRS 20th Anniversary
TRS Event Participant
Joined
Aug 7, 2007
Messages
29,177
Reaction score
11,518
Points
113
Location
SW Iowa
Vehicle Year
1985
Make / Model
Ford
Engine Type
V8
Engine Size
5.0
Transmission
Manual
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

New Member
Joined
Aug 11, 2007
Messages
18,550
Reaction score
228
Points
0
Age
66
Location
Ontario, Canada
Vehicle Year
2007
Make / Model
Dordge
Engine Size
3.3 Fuel Injected
Transmission
Automatic
My credo
Love Thy Neighbor
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.
 

Sponsored Ad


Sponsored Ad

Top