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Overheat

Tiny
PETE PRESSLEY
  • MEMBER
  • 1964 FORD FALCON
  • 5.0L
  • V8
  • 2WD
  • MANUAL
  • 50 MILES
Runs too hot all driving everything is new.
Sunday, September 29th, 2019 AT 8:33 AM

18 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Welcome to 2CarPros.

Since it's an older vehicle, are you sure ignition timing isn't an issue? I ask because of the model year. Also, the 5.0L wasn't offered in 1964. What all has been done to the vehicle?

Joe
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Sunday, September 29th, 2019 AT 7:34 PM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
It has got a built 302 big heads 202-160 valves 512-498 comp cam timing and carburetor has all been checked car runs good, but drive it about 10 miles temperature will get about 225, I don’t let it get any hotter.I have changed water pump and thermostat it only has about 65 miles on it. It has been bored 30 over carburetor is a 750 Holley. Thanks for any help. PS, it has a new radiator.
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Monday, September 30th, 2019 AT 11:11 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Welcome back:

First, how far advanced is the timing set? Also, what type of fan are you using, one with or without a fan clutch? Or are you using electric? And don't laugh, but when it starts overheating, check to make sure the lower radiator hose isn't collapsed. It may not have the coil in it to prevent this.

Let me know.

Joe
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Monday, September 30th, 2019 AT 7:17 PM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
Timing it 25 dig 36 total, 2 10 inch electric fans with shroud bottom hose has spring.
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Tuesday, October 1st, 2019 AT 9:25 AM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
Radiator is for a 1968 Mercury Comet a little bigger than the Falcon but it is just a 2 core.
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Tuesday, October 1st, 2019 AT 9:32 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Okay. I have a 1970 Cuda 440 6 pack that had the same type of issue. I hate to say it, but the only thing I could do to prevent the problem was retard the timing. I believe I left it at 12° BTDC. Like you, I had it in the 20's first and experienced the same issue. I have both an electric fan and the factory direct mount fan on the water pump with everything new, it still overheated.

I do have one last question. Did you do anything to change compression ratio?

Joe
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Tuesday, October 1st, 2019 AT 5:34 PM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
Just bored 30 stock type pistons compression cam says to run as much advanced timing as the starter will stand. I have tried to retard the timing down to 15 it won’t run. They say to run total time at 36 dig. I set total to 36 and idle time is at 25.
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Tuesday, October 1st, 2019 AT 9:20 PM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
It won’t idle below 1,200 rpm's with that cam.
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Tuesday, October 1st, 2019 AT 9:22 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Any exhaust restriction? Fuel mixture issues?
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Wednesday, October 2nd, 2019 AT 4:16 PM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
Long tube headers 2.5 exhaust, fuel runs a little rich.
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Wednesday, October 2nd, 2019 AT 8:57 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Exhaust shouldn't be an issue then. The only thing I can think of at this point is the fuel mixture, but that's a long shot.
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Thursday, October 3rd, 2019 AT 5:21 PM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
I ordered a 3 core radiator going to try that.
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Friday, October 4th, 2019 AT 9:02 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
That actually sounds like a good idea. If that doesn't cool it, I'm not sure what will.

If you get a chance, let me know the results.

Joe
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Saturday, October 5th, 2019 AT 9:38 PM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
I will I hope this will do it. I am running out of things to try. I have never run into this before.
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Sunday, October 6th, 2019 AT 5:50 PM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
Thanks for trying to help.
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Sunday, October 6th, 2019 AT 5:51 PM
Tiny
JACOBANDNICKOLAS
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You are very welcome. I'm really interested in knowing if the radiator does it for you.

Joe
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Sunday, October 6th, 2019 AT 7:58 PM
Tiny
PETE PRESSLEY
  • MEMBER
  • 11 POSTS
The radiator and stock fan done the trick. Electric fans don’t pull enough air.
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Friday, October 25th, 2019 AT 7:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Welcome back:

That's good news. Now I have to try it the one I've been working on. LOL I had electric fans but when it was heating up, I put the standard fan back on with no change. I guess the radiator is next.

Take care and have a great weekend.

Joe
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+1
Friday, October 25th, 2019 AT 9:43 PM

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