Coolant Air Bubble
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Intermediate
Joined: Sep 2021
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Coolant Air Bubble
I just installed a new Dewitt's radiator in my C5 track car and I think I have an air bubble that I can't seem to get rid of. When I installed the radiator I installed it leaning forward to help with cooling on the track and also vacuum filled the system. I test drove it today for the first time and as soon as I bring it up in RPM's the temp goes from low 180 to 215 and then back down as soon as I go back to cruise. This is a track car and is not run easy so I don't think this going to good on the track. I have tried jacking up the front of the car and turning the heater on full blast but it hasn't helped. Any ideas would be appreciated.
Thanks
Thanks
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From: Cape Coral, Florida
Safety Car
Joined: Aug 2011
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From: Portland OR
I had a dickens of a time first fill when I installed a Dewitt’s.
Finally got one of those overflow funnels and let it burp a few times. I also loosen the front steam vents on heads and make sure it bleeds there.
Finally got one of those overflow funnels and let it burp a few times. I also loosen the front steam vents on heads and make sure it bleeds there.
Thread Starter
Intermediate
Joined: Sep 2021
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When you say manually burp, are you talking about loosening the steam ports on the heads, because I have run the car for a long time with the front on jack stands trying to let it burp. I never had a problem before I, don't know if the radiator leaning forward makes it more difficult or not. Also I'm not sure if putting the vacuum back on it with system full of coolant would help.
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
When you say manually burp, are you talking about loosening the steam ports on the heads, because I have run the car for a long time with the front on jack stands trying to let it burp. I never had a problem before I, don't know if the radiator leaning forward makes it more difficult or not. Also I'm not sure if putting the vacuum back on it with system full of coolant would help.
It is still not clear to me what the problem is. You have not stated the engine is overheating, and hitting 180 is only possible if you run the crap out fans.
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Melting Slicks
Joined: Mar 2004
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From: Horseshoe Bend ID
When you say manually burp, are you talking about loosening the steam ports on the heads, because I have run the car for a long time with the front on jack stands trying to let it burp. I never had a problem before I, don't know if the radiator leaning forward makes it more difficult or not. Also I'm not sure if putting the vacuum back on it with system full of coolant would help.
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
Melting Slicks
Joined: Mar 2004
Posts: 2,390
Likes: 405
From: Horseshoe Bend ID
Tech Contributor
Joined: Jan 2007
Posts: 19,362
Likes: 1,128
From: Dyer, IN
No trying to offend or give you a hard time....but the advice/method just does not make sense.....for any car. Running the engine for 3 minutes is unlikely to open the thermostat unless the engine was just shut off recently, and you need circulation to get the air out of the system. Have you been unsuccessful with following the factory procedure?