This is one of those units:
http://www.amazon.com/UView-55...hecker/dp/B0002SRH5G
It creates a vacuum in the cooling system, then allows the vacuum to draw coolant into the system. It was discussed some time ago on the POCA e-mail forum and the comments were all positive.
quote:Originally posted by rbarkley671:
Seems to me the best way to fill a cooling system or purge a "full" one would be to pull a vacuum. All the air would expand out leaving only water. Never tried it or seen it mentioned. Turns out Sears (and many others I'm sure) sell a kit for just that:
http://www.sears.com/u-view-ai...ockNo=3&blockType=G3
Anybody tried using a vacuum?
Funny you mention that. I had my tank and vacuum pumped doing that very thing last weekend. I have a float vent used on heated floor systems and a one way valve. I pulled off the hose and hooked the vacuum directly to the heated floor float vent. These are designed to let air out but they have a float which closes when the air is out:
quote:Originally posted by David_Nunn:
This is one of those units:
http://www.amazon.com/UView-55...hecker/dp/B0002SRH5G
That looks like the one I linked from Sears (but somehow the link is now no good). Fantastic reviews on Amazon.
Seems like you could DIY a setup for a lot less. Hooking a vacuum source to the outlet of the swirl tank and then sucking the "replacement" fluid in from there or another "port" would seam to work as well.
But, how do you get the appropriate vacuum? A Mitivac (or similar) vacuum pump will pull about a 25 in vacuum level (about 83%). That may be enough, I don't know. Harbor Freight has some options that will do better:
http://www.harborfreight.com/a...onnectors-96677.html
uses compressed air (90 psi) to get a vacuum level of 28.3" of Mercury (about 95% of normal atmospheric pressure) for $18 or, if you want to service your A/C to the best, you can get this: http://www.harborfreight.com/2...cuum-pump-98076.html for &100 (which is what I have) that will pull a 75 micron (about 99.99%) vacuum. This will "boil" water at room temp and evaporate any water out of your A/C system. Not sure if it will boil an anti-freeze solution but that probably isn't important, only .01 of the volume of air in your system should remain after refilling the evacuated space. As Aristotle is said to have said, "Nature abhors a vacuum."
fre
quote:Originally posted by comp2:quote:Originally posted by rbarkley671:
Seems to me the best way to fill a cooling system or purge a "full" one would be to pull a vacuum. All the air would expand out leaving only water. Never tried it or seen it mentioned. Turns out Sears (and many others I'm sure) sell a kit for just that:
http://www.sears.com/u-view-ai...ockNo=3&blockType=G3
Anybody tried using a vacuum?
Funny you mention that. I had my tank and vacuum pumped doing that very thing last weekend. I have a float vent used on heated floor systems and a one way valve. I pulled off the hose and hooked the vacuum directly to the heated floor float vent. These are designed to let air out but they have a float which closes when the air is out:
It was the Webers that sucked all the air out.
quote:Originally posted by PanteraDoug:
It was the Webers that sucked all the air out.
Where did that nut go? DOh!
Great picture! You should enlarge & frame it, seriously.
I suggest being careful pulling much vacuum on cooling systems. Simple waterpump seals do not work well in both directions and they're designed to hold about 25 psi positive but much less pressure negative. Panteras have trouble with their radiator cap fluid recovery systems that only operate at 3- 5 psi negative. You might find air in a system that results from pulling air in at the pump or the cap, if you pull too hard. Might be OK, but....
looking at this old thread, T. do you have any more pics of how you mounted the fans to your radiator? That's my project this week.
I've had great success using this "Air Lift Cooling System Leak Checker and Purge Tool Kit" on completely dry or partially dry cooling systems. It pulls all the air out, has a vacuum gauge to test for leaks and uses the vacuum created by the tool to fill the system with coolant. I believe there was already a discussion on this perticular tool in the forum somewhere.
The last time I did this, I used my friend's equipment to do the job at his shop. It's Matco's version of the same tool and just a little more expensive.
The last time I did this, I used my friend's equipment to do the job at his shop. It's Matco's version of the same tool and just a little more expensive.
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You need to chrome that 2x4 that you are using to jack up the car (at the bottom of page 3).
Your system looks great!
Rocky
Your system looks great!
Rocky
I like those brackets. Are those screws holding them to the radiator?
Yes little button head allens. I think they were 3mm. I hand drilled and tapped the radiator top and bottom and used a little blue locktite. They have been on there for a while with no issues. I saw one done similar that used pop rivets but I like my allens.
Steve
Steve
Are you using rocker stud girdles, thus the reason for the Blue Thunder valve covers?...Mark