lalogutierrez21
New member
Hello everyone.
I have a 1967 Mustang that I've been working on for a couple years now and I've ran into a cooling problem that I can't seem to figure out. To start, I had the original 200ci engine sent out to be rebuilt about 4 years ago, and I put it all back together and bought a champion 3 row aluminum radiator for it. I ran into some fitment problems with hoses, but for a couple of years the car ran cool and I had no problems at all- then again I wasn't running the car for long period of time.
Fast forward a couple years and drives and I've noticed the classic problem- temp stays nice and cool while the car is moving, but gets really hot when sitting in traffic or at a stop light. I only would notice this on long drives, but now even going to some errands the car will begin to get hot.
Here's what I've done so far (and the problem still persists)
1) Thinking the 3 row radiator was too impeding of airflow, I switched back to a ACP aluminum radiator that is two row and much like the original design. I just installed it yesterday and I have to say it is much better in terms of fitment than the champion radiator. All the transmission cooling lines and original hoses fit much better.
2) Changed out thermostat for stock replacement at NAPA auto (I believe its 180* degree thermostat), changed out radiator hoses for fresh ones, radiator cap is new which is a 13lbs unit
3) Installed a new Flowcooler aluminum water pump
4) I have a B/M transmission cooler mounted at the front of the radiator, with transmission lines linked in series with the transmission cooler at the bottom of the radiator (the transmission cooler is not mounted directly on the transmission but rather on some brackets I made) It is also important to note that when I'm sitting in traffic and I put the car into park or neutral, the temperature starts to cool down once again...
5) Installed a Derale 15 inch Flex Fan Part # 19115 to replace the stock 4 blade fan
After everything I threw in the towel and actually took it to a shop in town so they could take a look at it. I explained the problem and everything I had done to it. They were nice and actually didn't charge me at all for looking at it! They ran tests on the engine to check if there were head gasket issues or something else but it came out fine. They believed that it was something with airflow through the radiator, and recommended to get a fan shroud or upgrade to electric fans. I bought a universal chrome fan shroud afterwards and attached it to the radiator, only to still come up with the same heating problem.
I'm at wits end with this problem as it's so odd. I had the car running perfectly, even taking it on a 6 hour road trip no problem so it feels like this problem just came out of the blue. I have considered electric fans instead of the belt driven fan but it looks like I have only about 1.75 inches of clearance before it hits the edge of the water pump.
Any advice?!
Thank you :roll:
I have a 1967 Mustang that I've been working on for a couple years now and I've ran into a cooling problem that I can't seem to figure out. To start, I had the original 200ci engine sent out to be rebuilt about 4 years ago, and I put it all back together and bought a champion 3 row aluminum radiator for it. I ran into some fitment problems with hoses, but for a couple of years the car ran cool and I had no problems at all- then again I wasn't running the car for long period of time.
Fast forward a couple years and drives and I've noticed the classic problem- temp stays nice and cool while the car is moving, but gets really hot when sitting in traffic or at a stop light. I only would notice this on long drives, but now even going to some errands the car will begin to get hot.
Here's what I've done so far (and the problem still persists)
1) Thinking the 3 row radiator was too impeding of airflow, I switched back to a ACP aluminum radiator that is two row and much like the original design. I just installed it yesterday and I have to say it is much better in terms of fitment than the champion radiator. All the transmission cooling lines and original hoses fit much better.
2) Changed out thermostat for stock replacement at NAPA auto (I believe its 180* degree thermostat), changed out radiator hoses for fresh ones, radiator cap is new which is a 13lbs unit
3) Installed a new Flowcooler aluminum water pump
4) I have a B/M transmission cooler mounted at the front of the radiator, with transmission lines linked in series with the transmission cooler at the bottom of the radiator (the transmission cooler is not mounted directly on the transmission but rather on some brackets I made) It is also important to note that when I'm sitting in traffic and I put the car into park or neutral, the temperature starts to cool down once again...
5) Installed a Derale 15 inch Flex Fan Part # 19115 to replace the stock 4 blade fan
After everything I threw in the towel and actually took it to a shop in town so they could take a look at it. I explained the problem and everything I had done to it. They were nice and actually didn't charge me at all for looking at it! They ran tests on the engine to check if there were head gasket issues or something else but it came out fine. They believed that it was something with airflow through the radiator, and recommended to get a fan shroud or upgrade to electric fans. I bought a universal chrome fan shroud afterwards and attached it to the radiator, only to still come up with the same heating problem.
I'm at wits end with this problem as it's so odd. I had the car running perfectly, even taking it on a 6 hour road trip no problem so it feels like this problem just came out of the blue. I have considered electric fans instead of the belt driven fan but it looks like I have only about 1.75 inches of clearance before it hits the edge of the water pump.
Any advice?!
Thank you :roll: