Overheating

I think that it is important that you (and us) know what the temperature of the coolant is getting up to.

Are you new to running and driving Model A's?
The reason I ask this is that if your radiator has a bit too much coolant it will push coolant out of the radiator as the coolant gets warm and expands.
When this happens it really looks like an overheating situation when a problem doesn't actually exist.

From what I am reading in your posts you may have a problem but it is also possible that you don't.

Actually knowing the temperature of the coolant and not guessing at it's temperature is important.
 
Me again. I soaked system with Evapo-Rust for couple of days and car no longer got hot while idling. However, took it for a drive and after a few miles got over heated with steam coming out of lower radiator hose and I could hear water boiling inside radiator. No overflow at cap and head was about 245 degrees. Water pump working and looking good. could problem still be the radiator?
 
pawillie said:
Me again. I soaked system with Evapo-Rust for couple of days and car no longer got hot while idling. However, took it for a drive and after a few miles got over heated with steam coming out of lower radiator hose and I could hear water boiling inside radiator. No overflow at cap and head was about 245 degrees. Water pump working and looking good. could problem still be the radiator?
Click to expand...

IMO and with respect, you can ask that question a thousand times and the answer won't change. Sometimes, we have to accept reality and do what has to be done.
I'd at least have the radiator cleaned out by a decent radiator shop and depending on what they find, you may have to replace the core. Yes, I know, that costs $ and so does ruining the engine through over heating. I'd be worried that if you took the engine to 245°, it might already be cracked.
Good luck.
 
Is the stat sticking? Possibly part way open now? Sometimes it is the simple things that jump up and bite ya...
 
I removed hoses and backed flushed radiator and engine separately and still lost a gallon of water through overflow pipe while idling after engine heats up. Top pipe extremely hot and bottom merely warm. Looked under cap and fluid doesn't seem to be moving. How can I tell if radiator or block?
 
There is no way the radiator got this blocked through normal means. There must be something in it. Mice will haul grain, corn, acorns etc into their nest. You'll need to take the radiator out of the car and bring it in to be professionally cleaned. Use an old speedometer cable to snake into the block, see if you can get it clean. I would NOT run it any more. Your going to ruin the engine.
 
A few years ago I also had overheating problems. I figured I didn't have much to loose so I removed the top tank. It is a time consuming job but if you want to get a good job done, do it yourself. Here are the steps I took:
1. Remove the radiator from the car
2. Plug the lower connection. I used plastic wrap and rubber bands to make a good seal.
3. Fill the radiator up to the bottom seam of the tank.
4. Using an air compressor and blow nozzle and a propane torch, heat the solder and blow it out of the joint.
5. Work your way around the tank removing the solder and shake it loose.
6. When you get the upper tank off, you will see why flushing is a waste of time. Many tubes will be packed solid with grease, dirt, rust. You may free one or two tubes but then all the flushing bypasses the plugged tubes that are left.
7. Make a "L" tipped welding rod tool to push down each tube, GENTLY! Use "Gunk" spray as you go to loosen the grease and dirt, going up and down until everything is pushed into the lower tank.
8. Now flush and resolder the tank back on. Good luck, Ed
 
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