Heating problem - questions?
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Joined: Aug 2009
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From: Southwest VA
Heating problem - questions?
I have a 65 with a 427 from a 69 Vette in it, mild motor. Gauge shows it's heating around 220 - 230. I tested at top radiator elbow with laser digital thermometer and it read around 210-215 degrees and at top of thermostat housing and it was around the same depending on when i tested. I installed a 160 degree Stant Superstat prior to these tests. It also had a 160 degree stat that I replaced.
It has a 6 or 8 blade clutch fan. When I cut the car off fan does not spin anymore. I can try to spin with my hand and it may turn 1/4 to 1/2 turn - hot or cold. I have read when clutch fan engages it will sound like a jet engine taking off - I have never heard this?
It also has an electric fan on front of radiator. When I cut it on it does not change the temp at all.
The radiator looks like it has been recored - not sure just looks newer. It has a fan shroud. When I cut car off I squeezed the top hose to check for pressure - it didn't feel like it had any. I noticed that the line coming from the radiator that runs to the expansion tank would leak (where connected to rad) and I could hear air coming from it when I squeezed the hose. It was so hot I did not try removing but I tightened it and that did not help. Either leaking at rad connection or hose is bad.
Any ideas what to check next? Any insight is appreciated.
It has a 6 or 8 blade clutch fan. When I cut the car off fan does not spin anymore. I can try to spin with my hand and it may turn 1/4 to 1/2 turn - hot or cold. I have read when clutch fan engages it will sound like a jet engine taking off - I have never heard this?
It also has an electric fan on front of radiator. When I cut it on it does not change the temp at all.
The radiator looks like it has been recored - not sure just looks newer. It has a fan shroud. When I cut car off I squeezed the top hose to check for pressure - it didn't feel like it had any. I noticed that the line coming from the radiator that runs to the expansion tank would leak (where connected to rad) and I could hear air coming from it when I squeezed the hose. It was so hot I did not try removing but I tightened it and that did not help. Either leaking at rad connection or hose is bad.
Any ideas what to check next? Any insight is appreciated.
Last edited by I-WANNA-C2; Apr 16, 2010 at 08:21 PM.
Race Director
Joined: Jan 2002
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From: Close to DC
C2 of the Year Finalist - Modified 2020
Fixing cooling problems has quite a wide range of areas to look at. Go to lbfun.com. It's Barry's and Linda's web site, it contains an area dedicated to cooling issues and is VERY usefull. 
Dennis
Dennis
Team Owner
Joined: Mar 2003
Posts: 26,118
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From: Greenville, Indiana
I noticed that the line coming from the radiator that runs to the expansion tank would leak (where connected to rad) and I could hear air coming from it when I squeezed the hose. It was so hot I did not try removing but I tightened it and that did not help. Either leaking at rad connection or hose is bad.
Fix the leaky hose.
Pro
Joined: Jan 2005
Posts: 644
Likes: 17
From: O'Fallon MO
I have a 65 with a 427 from a 69 Vette in it, mild motor. Gauge shows it's heating around 220 - 230. I tested at top radiator elbow with laser digital thermometer and it read around 210-215 degrees and at top of thermostat housing and it was around the same depending on when i tested. I installed a 160 degree Stant Superstat prior to these tests. It also had a 160 degree stat that I replaced.
It has a 6 or 8 blade clutch fan. When I cut the car off fan does not spin anymore. I can try to spin with my hand and it may turn 1/4 to 1/2 turn - hot or cold. I have read when clutch fan engages it will sound like a jet engine taking off - I have never heard this?
It also has an electric fan on front of radiator. When I cut it on it does not change the temp at all.
The radiator looks like it has been recored - not sure just looks newer. It has a fan shroud. When I cut car off I squeezed the top hose to check for pressure - it didn't feel like it had any. I noticed that the line coming from the radiator that runs to the expansion tank would leak (where connected to rad) and I could hear air coming from it when I squeezed the hose. It was so hot I did not try removing but I tightened it and that did not help. Either leaking at rad connection or hose is bad.
Any ideas what to check next? Any insight is appreciated.
It has a 6 or 8 blade clutch fan. When I cut the car off fan does not spin anymore. I can try to spin with my hand and it may turn 1/4 to 1/2 turn - hot or cold. I have read when clutch fan engages it will sound like a jet engine taking off - I have never heard this?
It also has an electric fan on front of radiator. When I cut it on it does not change the temp at all.
The radiator looks like it has been recored - not sure just looks newer. It has a fan shroud. When I cut car off I squeezed the top hose to check for pressure - it didn't feel like it had any. I noticed that the line coming from the radiator that runs to the expansion tank would leak (where connected to rad) and I could hear air coming from it when I squeezed the hose. It was so hot I did not try removing but I tightened it and that did not help. Either leaking at rad connection or hose is bad.
Any ideas what to check next? Any insight is appreciated.
Mike
Last edited by mhanley; Apr 17, 2010 at 02:28 PM. Reason: typo
Team Owner
Joined: Mar 2003
Posts: 26,118
Likes: 1,874
From: Greenville, Indiana
Why would you go to all that trouble if he doesn't even have any steam escaping?
