Re: Running a bit hot,,,Question!

[MO <micher@xxxxxxxxxxxxxxx>]

Thanks Eric and all..........................MO

On Jul 20, 2:20 am, Eric Sturgis <ericstur...@xxxxxxxxx> wrote:
> Mo, not all of the overflow tanks hold pressure.  Only the new cars do
> that.  The old fashion kind do not hold pressure they are just an overflow
> tank and the contraction of the liquid makes the vacuum that draws the
> fluid back into the radiator.  The new cars it's not so much an "overflow
> tank" as it is an expansion tank and is part of the system.
>
> On an old car, lets say a 1969 Dodge Dart, it is truly an overflow tank, it
> holds no pressure and truly is just a bucket that will hold fluids and as
> the motor cools let them draw back into the radiator, and if it was broken
> or missing from the car it would work just like one of our cars.  It would
> puke out a little bit of coolant and have a air gap in the radiator when it
> was cold.  We would have to add fluid to it every now and then and check it
> every time we filled it up with gas.  However if you take that plastic tank
> off of our 2006 Jeep it would not just make little dribbles, with out it,
> it would dump all the radiator fluid out on the ground and overheat within
> a few minutes of start up.  To our new cars that plastic bottle is more of
> an expansion tank for the cooling system, not just for overflow.  Some of
> them are designed to catch sediments as well as hold the extra cooling
> fluid so you can easily tell it's condition at a glance.
>
> You can retro fit either system to a car like ours.  The plastic tank for
> Mopars from the 60's would look just fine under the hood and work really
> well for our cars.  It's just a white plastic tank with a rubber hose the
> goes from the overflow of the radiator to the bottom of the plastic tank or
> it goes through the top of the plastic tank through an opening in the top
> cover (it depends on what car you take it from, both work the same) and you
> just keep the fluid filled to the "Cold" mark and check it when the car is
> cold.  To do the pressurized system you need a different type of radiator
> cap for the radiator as the expansion tank from a new car with become the
> new pressure cap.  You have to get the lines from a donor car, a 1980's VW
> or Mercedes has a system that would be compatible with our older cars, and
> I'm sure lots of others too.
>
> Either way you go, they are both very nice systems, only is more sealed
> than the other, but both work just fine.
>
> This is an example that will work with your current system, just bolt it on
> the car, and that rubber line goes to the radiator overflow nipple on
> radiator. (hehe I said nipple)http://www.streetperformance.com/part/dorman-products/engine-coolant-...
> or this onehttp://www.streetperformance.com/part/dorman-products/engine-coolant-...
>
> Or go junk yard shopping.  It's fun!
>
> --
> Eric
> Tacoma, WA
> 1962 Chrysler Newport 2 door HT

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