I am a stupid stupid man!!!!!!!!!!!
Enough said?
No, I am embarrased to say this, but after spending about $500 to try and cool the engine with aluminum radiator, new perma-cool fan, perma-cool 14" electric pusher fan, converted to high volume water pump, new custom hoses because the alluminum radiator is actually made for a chevy (remmember the 69 351W has a passenger side water pump, which is the same as a chevy, and the aluminum radiators are a dime a dozen with the chevy configuration, so I decided to relocate my upper hose rather than get a water pump which takes water from the drivers side), I have solved my problem.
I had the thermistat in backwards, with the sping pointing towards the radiator, not the motor. The water would heat up in the block building pressure, then it would open allowing the cooler water to enter the block and the hot water to go to the radiator, but as soon as the pressure built up in the radiator, it closes the thermistat for good. Here is how I realized what I had done. I was looking through the April 2001 Mustang and Fords (I had it on my desk at work since April) for an advertisement for the D.U.I. (davis unified ignition) distributor with built in coil because that was going to be one of the next things I replaced to solve the overheating problem. In that issue, there is an article titled Understanding Cooling Systems. I started to read it and there is a diagram of the water thermistat in the housing, and the spring is pointed towards the motor. I thought, I wonder if mine is positioned correctly, so I ran home for lunch, took the hose off and sure enough, I was staring at the spring. Its in backwards. No wonder the damn thing has been overheating.
Boy, what a simple mistake I made during the motor buildup.
So, remmember to pay attention to the small details, this one sure cost me time and money, and it was a stupid mistake.
Enough said?
No, I am embarrased to say this, but after spending about $500 to try and cool the engine with aluminum radiator, new perma-cool fan, perma-cool 14" electric pusher fan, converted to high volume water pump, new custom hoses because the alluminum radiator is actually made for a chevy (remmember the 69 351W has a passenger side water pump, which is the same as a chevy, and the aluminum radiators are a dime a dozen with the chevy configuration, so I decided to relocate my upper hose rather than get a water pump which takes water from the drivers side), I have solved my problem.
I had the thermistat in backwards, with the sping pointing towards the radiator, not the motor. The water would heat up in the block building pressure, then it would open allowing the cooler water to enter the block and the hot water to go to the radiator, but as soon as the pressure built up in the radiator, it closes the thermistat for good. Here is how I realized what I had done. I was looking through the April 2001 Mustang and Fords (I had it on my desk at work since April) for an advertisement for the D.U.I. (davis unified ignition) distributor with built in coil because that was going to be one of the next things I replaced to solve the overheating problem. In that issue, there is an article titled Understanding Cooling Systems. I started to read it and there is a diagram of the water thermistat in the housing, and the spring is pointed towards the motor. I thought, I wonder if mine is positioned correctly, so I ran home for lunch, took the hose off and sure enough, I was staring at the spring. Its in backwards. No wonder the damn thing has been overheating.
Boy, what a simple mistake I made during the motor buildup.
So, remmember to pay attention to the small details, this one sure cost me time and money, and it was a stupid mistake.
