The Ford Barn

bavArian · 06-05-2022, 11:36 AM

Took it for a short test drive again today. It was ~4 °C/ 7 °F colder today but I think the heat dissipation radiator to ambient is a little better. Still not good enough mind you, but I was able to drive continuously (@ ~ 40mph) without a boiling radiator and the temps actually went down when driving downhill.
I also found that one side of the radiator was considerably cooler right after stopping than the rest. After half a minute or so the entire rad. had a constant temperature, with a difference of about 6°C / 11 °F between top and bottom. So there's obviously still a few clogged tubes. I'll check with a local radiator shop how much removing and refitting both tanks would cost me. If it's reasonable I'll rod it out myself, if not I'll probably have to bite the bullet and order a new radiator.

Head-temperature was more even when driving, under 10 °F difference between cylinder and manifold side.

Question: Which temperature should the water have when entering the block?

I'm measuring ~ 80 °C / 176 °F at the lower tank leaving the radiator.

I assume that's around 15°C / 30 °F too hot?

06-05-2022, 11:36 AM	#32
bavArian Senior Member Join Date: Sep 2019 Location: Germany Posts: 221	Re: Lower half of radiator stays cold while driving Took it for a short test drive again today. It was ~4 °C/ 7 °F colder today but I think the heat dissipation radiator to ambient is a little better. Still not good enough mind you, but I was able to drive continuously (@ ~ 40mph) without a boiling radiator and the temps actually went down when driving downhill. I also found that one side of the radiator was considerably cooler right after stopping than the rest. After half a minute or so the entire rad. had a constant temperature, with a difference of about 6°C / 11 °F between top and bottom. So there's obviously still a few clogged tubes. I'll check with a local radiator shop how much removing and refitting both tanks would cost me. If it's reasonable I'll rod it out myself, if not I'll probably have to bite the bullet and order a new radiator. Head-temperature was more even when driving, under 10 °F difference between cylinder and manifold side. Question: Which temperature should the water have when entering the block? I'm measuring ~ 80 °C / 176 °F at the lower tank leaving the radiator. I assume that's around 15°C / 30 °F too hot?