posted April 24, 2004 01:56 AM
Here is the deal. I am running the same cooling system as I did last year and never had any problems. Stock 4 core radiator, stock water pump, 5/8" restrictor and 22 pound radiator cap. Never had a problem.
Well last night was our first race of the season. After coming in from hot laps, the temp was only 185 degrees but I could smell a strong scent of coolant.
Removed the hood and noticed my coolant overflow tank was totally full and I could see how wet the firewall was because it all had come out of the relief valve of the overflow.
Filled the radiator back up and put a brand new 22 pound cap on. Went out for the heat race, temp again only got up to 185 degrees and the overflow again was full. The radiator was almost empty!
What in the world is causing this? I dont see any radiator leaks anywhere but this situation acts like the system is building air pressure, or some kind of pressure, opening up the radiator cap and dumping out all of coolant out the overflow. This is just my theory but I honestly do not have a clue.
Anyone ever have a problem like this? What's going on here? This is a new one to me.
By the way, went out for the feature, was kicking some but, then the clutch went..........oh yea, the overflow again was full and radiator almost empty.