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Coolant recovery **continued**

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podracer169

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Greetings,
I’ve been reading through the archives regarding the topic of coolant recirculation set-ups. Seems like there are many options available. However, I am unclear on a couple things and was hoping someone could help answer a couple questions. I’m looking to install some type of coolant recover system on my BT7 for a couple reasons. 1. I don’t like to see coolant burp out after I shut down and 2. feel that leaving a couple inches of air in the radiator cant be the most efficient way of cooling the system.

I currently have a standard 7lb cap on my radiator (I think it came from Moss). Does the recirculation/recovery tank need to have the same or higher rated pressure system (7lb cap or above)? Also, is it best to mount the recovery tank higher than the radiator filler cap?

BTW – I am not experiencing any over-heating issues.

Steve
 
Well Podracer, there is no need to have a pressurised cap on the recovery bottle or mount the bottle higher than the radiator. However I use a closed pressurised system that does have the pressurised overflow bottle . Either system will work provided the cap you have is of the correct type.---Fwiw---Keoke
 
To use the non pressurized bottle, the radiator cap itself needs to have a good top seal or the fluid won't flow back into the radiator as it cools. The NAPA #703-1411 cap is 7 psi & has a good top seal. It doesn't really matter if the tank is higher or lower. The coolant siphons back into the radiator via the small oneway valve in the center bottom of the cap.
D
 
Steve--

I installed an AL expansion/recovery tank as shown in the attached photo. The hose from the radiator runs down and to the bottom of the tank. The other hose runs from the top of the tank toward the floor.

The tank gives the coolant someplace to go other than on the garage floor when it expands, esp. after shutdown and also provides a method to "recover" the coolant into the radiator as it subsequently cools and contracts through the one-way valve in your radiator cap.

As you can see this tank is not pressurized.
 

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Yep Dave, except I use OE caps from the UK. 7 LBS on the radiator and 10 LBS on the bottle---Keoke- /ubbthreads/images/graemlins/yesnod.gif
 
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