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Overheating/Water flow Question
#1120607
11/24/11 04:25 PM
11/24/11 04:25 PM
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Joined: Jan 2009
Posts: 228
FL
HelleOnWheels
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FL
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The car hasn't been driven in years and it just got back on the road. It has a brand new radiator, new hoses(including internal spring on lower hose) and new fluid. I filled it up and started the car. After a while I checked the fluid and it was obvious that the fluid level was visually lower in the radiator. I assumed this meant that the t-stat had opened and let water flow into the block. I added fluid to top it off about 1 inch below the radiator neck. After driving it around town for about 10 mins, I stopped at a gas station and the overflow hose was spitting fluid out onto the ground. Does this mean it was overheating or could it have just been overfilled? Car seems to be running fine, but I am concerned about driving it and possibly having some damage due to overheating. It is a '67 440. If I take off the radiator cap when it is running and see the fluid flowing nicely does that mean everything is ok?? 
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Re: Overheating/Water flow Question
[Re: None2Slow]
#1120609
11/24/11 04:36 PM
11/24/11 04:36 PM
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Joined: Apr 2010
Posts: 4,154
bethlehem pa
mikemee1331
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master
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Posts: 4,154
bethlehem pa
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Quote:
You should put a coolant recovery tank (overflow bottle)on. If you fill it to the top when its cool, then it will spit out coolant when warm. Then when you re-check it, it will be low. An overflow tank will cature and refill the radiator as needed. What does the gauge show when running?
 you should be fine!
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Re: Overheating/Water flow Question
[Re: mikemee1331]
#1120610
11/24/11 05:52 PM
11/24/11 05:52 PM
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Joined: Jan 2009
Posts: 228
FL
HelleOnWheels
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Quote:
Quote:
You should put a coolant recovery tank (overflow bottle)on. If you fill it to the top when its cool, then it will spit out coolant when warm. Then when you re-check it, it will be low. An overflow tank will cature and refill the radiator as needed. What does the gauge show when running?
you should be fine!
so then if I take off the radiator cap when it is running and see the fluid flowing nicely does that mean everything is probably ok?
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Re: Overheating/Water flow Question
[Re: HelleOnWheels]
#1120612
11/24/11 05:58 PM
11/24/11 05:58 PM
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Joined: Feb 2010
Posts: 2,806
Northern NJ
StukaJU87
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Northern NJ
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Yes, if you can see water flowing once the thermostat is open you should be fine. Just my opinion but, I do not think you really need the recovery tank. I mean, it couldn't hurt...but it isn't needed.
Scott
1969 Super Bee, 383/4 speed
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Re: Overheating/Water flow Question
[Re: mikemee1331]
#1120613
11/24/11 06:03 PM
11/24/11 06:03 PM
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Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
WILD BILL
Senior Member of the Junior Dragster Club
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Senior Member of the Junior Dragster Club
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Posts: 10,542
BROOK PARK, OH
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Not all catch cans and radiator caps are the same though. Some (like the one on my car) will capture fluid coming out of the radiator but not return it to the system.
Make sure the bottle and cap you get are designed to return coolant back to the system and you will be fine.
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Re: Overheating/Water flow Question
[Re: HelleOnWheels]
#1120614
11/24/11 06:13 PM
11/24/11 06:13 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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I'm concerned that it started spitting after only 10 minutes. I'm assuming the stat sat for those years. I would take out the stat & do for a drive & holler back & working the stat w your hands to see if it's free and no stat for a few minutes of driving is not going to hurt things from a delayed warmup. I would also drill a ~1/16" hole in the flat of it for easier fillup & lets air pockets out & takes 2 minutes to do & no down sides. EDIT I'm assuming the timing/shroud/fan/fan distance are acceptable
Last edited by RapidRobert; 11/24/11 06:15 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Overheating/Water flow Question
[Re: RapidRobert]
#1120615
11/24/11 06:23 PM
11/24/11 06:23 PM
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Joined: Jan 2009
Posts: 228
FL
HelleOnWheels
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Quote:
I'm concerned that it started spitting after only 10 minutes. I'm assuming the stat sat for those years. I would take out the stat & do for a drive & holler back & working the stat w your hands to see if it's free and no stat for a few minutes of driving is not going to hurt things from a delayed warmup. I would also drill a ~1/16" hole in the flat of it for easier fillup & lets air pockets out & takes 2 minutes to do & no down sides. EDIT I'm assuming the timing/shroud/fan/fan distance are acceptable
The fan/shroud combo are stock and have been on the car for years. None of those parts are aftermarket parts.
I see a very swift current of moving fluid when I open the cap and look in. It seems to me that it is obviously open(t-stat). I may buy a replacement stat and gasket at the show this weekend. I am thinking that it should be fine to drive to the rod run since it is only 2 miles away from the house.
BTW....the gauge stays right under half way between cold and hot when it was  water out. I would think that is a safe operating temperature.
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Re: Overheating/Water flow Question
[Re: HelleOnWheels]
#1120616
11/24/11 06:33 PM
11/24/11 06:33 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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All you posted sounds pretty good. What about the cap, was it new w the rad?. Tho spitting after only 10 minutes seems not right (to me) & it might have just been an air pocket letting a hot spot develop causing steam making the big jump in psi. Stay in touch
live every 24 hour block of time like it's your last day on earth
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Re: Overheating/Water flow Question
[Re: RapidRobert]
#1120617
11/24/11 06:55 PM
11/24/11 06:55 PM
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Joined: Apr 2010
Posts: 4,154
bethlehem pa
mikemee1331
master
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master
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Posts: 4,154
bethlehem pa
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Quote:
All you posted sounds pretty good. What about the cap, was it new w the rad?. Tho spitting after only 10 minutes seems not right (to me) & it might have just been an air pocket letting a hot spot develop causing steam making the big jump in psi. Stay in touch
when a person is full of turkey and stuffing all is supposed to right in the world............ he just over filled and the rad threw up a little 
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Re: Overheating/Water flow Question
[Re: RapidRobert]
#1120619
11/24/11 07:52 PM
11/24/11 07:52 PM
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Joined: Jan 2009
Posts: 228
FL
HelleOnWheels
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Quote:
All you posted sounds pretty good. What about the cap, was it new w the rad?. Tho spitting after only 10 minutes seems not right (to me) & it might have just been an air pocket letting a hot spot develop causing steam making the big jump in psi. Stay in touch
The radiator cap is the original cap that I re-used on the new radiator. I will drive it again in the morning and see what I find. The car show is only 2 miles away and then it will be sitting all day as I roll through the swap meet aisles!!!!
I will let you know how it goes tomorrow.
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Re: Overheating/Water flow Question
[Re: StukaJU87]
#1120620
11/24/11 08:24 PM
11/24/11 08:24 PM
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Joined: Dec 2004
Posts: 5,278
San Jose, California
DennisH
Vacation
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Posts: 5,278
San Jose, California
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Quote:
Yes, if you can see water flowing once the thermostat is open you should be fine. Just my opinion but, I do not think you really need the recovery tank. I mean, it couldn't hurt...but it isn't needed.
Agreed. No tank needed. Leave an inch or two from the neck to allow. Get a laser-thermometer at Harbor Freight or wherever to be sure of actual temp. 180 Superstat from Napa if it would need to be changed.
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Re: Overheating/Water flow Question
[Re: DennisH ]
#1120621
11/24/11 08:33 PM
11/24/11 08:33 PM
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Joined: Jan 2009
Posts: 228
FL
HelleOnWheels
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Quote:
Quote:
Yes, if you can see water flowing once the thermostat is open you should be fine. Just my opinion but, I do not think you really need the recovery tank. I mean, it couldn't hurt...but it isn't needed.
Agreed. No tank needed. Leave an inch or two from the neck to allow. Get a laser-thermometer at Harbor Freight or wherever to be sure of actual temp. 180 Superstat from Napa if it would need to be changed.
I have a laser thermometer. Would I just take a reading of the fluid temp that is flowing across the top of the radiator when the car is at operating temp?
What temp should I feel comfortable driving with? Under 205??? What temp difference should I see since I will be doing this at an idle with no air flowing through the radiator?
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Re: Overheating/Water flow Question
[Re: HelleOnWheels]
#1120626
11/25/11 12:02 AM
11/25/11 12:02 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Posts: 36,040
Lincoln Nebraska
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Actually before you put the new stat in take it out & see if it pukes in 10 minutes. We gotta ID the prob before we go any farther. I wont go into why you need the stat but it's critical and I highly suggest you drill a 1/16" hole in the flat just outside the center "mechanism" section for easier fillups. Keep us posted. EDIT get a 180 stat (no less than 180)
Last edited by RapidRobert; 11/25/11 12:04 AM.
live every 24 hour block of time like it's your last day on earth
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