General Ford Ranger Discussion General discussion of the Ford Ranger that does not fit in any other sub-forum.

Coolant Bottle

  #1  
Old 12-29-2018
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Coolant Bottle

Ok I have done some research and I was wondering if and how to replace the coolant bottle with a smaller bottle? And maybe the wiper fluid bottle. I would like your two cence on this topic so pleases speak up.
P.S. My truck is a 4x4 4L V6
 
  #2  
Old 12-30-2018
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Not sure how much smaller you can go

Overflow tank has a reserve of coolant in case of the leak, and as coolant heats up and expands in the engine it flows out of radiator and into the overflow tank, the hotter the coolant the more it expands so the more coolant flows out to the tank.

As engine/coolant cools down that coolant is sucked back into the radiator via the smaller valve in center of rad cap

So in the summer months or if pulling a load more coolant should flow out.


The overflow tank needs to be self purging of air and not sealed
The hose needs to be at the bottom of the tank, so if any air comes in it will bubble to the top and then at cool down coolant will be sucked back in to replace the air


You could change to a Degas system, thats what was run in the old days and now used on many engines
No overflow tank
There is a reservoir tank with a 16psi cap, radiator has a sealed cap no valves, reservoir tank MUST BE the high point of cooling system so any air left in the system will end up in this reservoir
The reservoir has some coolant and then air at the top
The coolant expands into the reservoir pressurizing the air inside at 16psi it lets some air out

In the old days the radiator tops were bigger and that was the reservoir tank, you always left air in the top of the radiator so the coolant could expand, if engine over heated coolant would come out or if you overfilled it
 
  #3  
Old 12-30-2018
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Yes I do under stand this fact. But If you check your fluids like your supposed to then you would never run low on coolant. As a question down the coolant bottle have one or two hoses connected to it? And do you think a 1 or 2L bottle would be big enough?
 
  #4  
Old 12-31-2018
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Just one hose from rad cap port to the bottom of the bottle
Some tanks have a hole in the bottom for this, I prefer the kind that has the hose that comes in from the top and goes almost to the bottom of the tank
As the tank gets used it WILL get debris in the bottom, as warm coolant comes in it can push the debris out of the way, but as engine cools off, when it comes time to suck coolant back in this debris will clog the passage.
If the hose sits just above bottom of the tank then it won't get clogged

Bottle must be vented, open to the outside air pressure


Set your current reservoir at cold line , then fill it to HOT line measuring the amount of fluid you need to add, then double that to get new bottle size
 
  #5  
Old 12-31-2018
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Thank you for the information and can I put the new bottle in front of the radiator bolted to the core suport?
 
  #6  
Old 12-31-2018
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Can't think of any reason why not
 
  #7  
Old 12-31-2018
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Does the bottle need to be above the radiator cap? And on a different note could I reduce my washer fluid bottle?
 
  #8  
Old 12-31-2018
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No restriction on the level of the reservoir, its not gravity dependent.
It should have enough suction as coolant cools down to pull it up from bottom of rad level
You may want to put a clamp on the hose at rad cab, if it doesn't have one, for the suction to work it can't have an air leak or it will suck in air if the coolant is too hard to lift from sitting lower
Other limitation is upper and lower rad hose hardness, if the larger hoses are soft then they will start to collapse when pressure in rad drops below -1psi, if that starts to happen then there is no suction until they stop collapsing, its a balance of how hard it is to lift the coolant vs the hardness of the larger hoses

Yes, hit the wrecking yards, many vehicles use washer fluid reservoirs with long necks that sit low down in the front of engine bay, or rad support
And it will come with 12v motor, get the electrical connector with it, also connector for low level if it has that sensor

Google: Dorman 603-106
or Dorman 603-403

There are all kinds of shapes and sizes
 

Last edited by RonD; 12-31-2018 at 07:10 PM.
  #9  
Old 01-01-2019
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Thanks for the information. So I need a non sealed bottle with one hose bib at the bottom correct?
 
  #10  
Old 01-01-2019
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For the overflow, yes
I prefer the ones with hose coming in at the top but extending down to the bottom inside the tank, less likely to be clogged by debris in the tank
But bib at the bottom is fine if that's whats available

And vented cap for sure, or holes in the cap, lol

Wrecking yard will have literally thousands of these in different shapes and sizes
 
  #11  
Old 01-01-2019
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Could I use the same type bottle for my washer fluid? Or do I need one with a pump in it? Do you know of anyone who has done this before? By the way Iím thinking about doing a dual battery setup and wanted to keep both batteryís in the engine bay so thatís why Iím thinking about going with smaller bottles.
 
  #12  
Old 01-01-2019
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You need a pump for washer fluid, but you could use an in-line pump like this:
Amazon Amazon
So could use same type of reservoir for both

Yes, moving or changing these is popular when adding a battery, don't recall seeing many how-to's about it though

I would hit wrecking yards for cars and have a look around, there are many ideas out there
 
  #13  
Old 01-02-2019
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I know this is the wrong thread but could you fit two optima yellow top side by side in factory location? Do you know which of the two wires going to the battery is the charge wire?
 
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