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Gap between A/C condenser and radiator, electric fan
#1
I see there is a large gap between my radiator and A/C condenser so I am trying to figure out what was normal. I have an aftermarket 4-row aluminum radiator that it still fits in the OEM brackets. So I don't think it is farther back. I also see that the lower brackets of the condenser have a bend that pushes the bottom of the condenser away from the radiator. With that the gap at the bottom is about 1/2" more than at the top. In all the gap is about 1" at the top and 1 1/2" at the bottom which seems high.

Also, is anyone using a push electric fan to be on when the A/C is on? The car is running hot when idling for a while and the A/C is on. I can have a electric fan to be activated by my EFI unit if I wanted so I am curious.

Edit: it is actually 1 1/4" at the top and 1 3/4" at the bottom

        [Image: 20160929_171923_edit2_small.jpg]

1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump
Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes
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#2
I have a four row rad with stock mounting brackets and support. My condenser sits just inside the front of the rad support and tilt out towards the bottom. I can take some measurements for you, but I suspect mine is at least an inch at the top and more at the bottom.

[Image: DSC-0321.jpg]

1973 H Code Convertible - Medium Copper Metallic - June 8, 1973, Built Ford Marketing Sales Vehicle
[Image: DSC_0266xsm.jpg]
[Image: satellite.png] Proud Space Junk Award Winner!












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#3
(06-28-2019, 12:45 PM)rackerm Wrote: I have a four row rad with stock mounting brackets and support. My condenser sits just inside the front of the rad support and tilt out towards the bottom. I can take some measurements for you, but I suspect mine is at least an inch at the top and more at the bottom.

[Image: DSC-0321.jpg]

Thanks. That's probably the way it came from factory. Nowadays the gap is more than 1/2". I was reading that if the gap is too much (>1/2") the airflow becomes turbulent which reduces the heat transfer efficiency of the radiator. I wonder why they have the outwards tilt at the bottom.

        [Image: 20160929_171923_edit2_small.jpg]

1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump
Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes
  Reply
#4
Interesting. I have not heard that before. I dont have any overheating issue but then I never use the AC in my car. With a vert in the northeast who needs it.

1973 H Code Convertible - Medium Copper Metallic - June 8, 1973, Built Ford Marketing Sales Vehicle
[Image: DSC_0266xsm.jpg]
[Image: satellite.png] Proud Space Junk Award Winner!












  Reply
#5
(06-28-2019, 02:22 PM)tony-muscle Wrote:
(06-28-2019, 12:45 PM)rackerm Wrote: I have a four row rad with stock mounting brackets and support. My condenser sits just inside the front of the rad support and tilt out towards the bottom. I can take some measurements for you, but I suspect mine is at least an inch at the top and more at the bottom.

Thanks. That's probably the way it came from factory. Nowadays the gap is more than 1/2". I was reading that if the gap is too much (>1/2") the airflow becomes turbulent which reduces the heat transfer efficiency of the radiator. I wonder why they have the outwards tilt at the bottom.
I think I figured out the reason for the outward tilt at the bottom. It is kind of obvious Shootself  . The radiator sits at an angle so the condenser follows the radiator tilt, which follows the tilt of the drivetrain. However, in my case, it looks like the condenser is at a steeper angle than the radiator.

        [Image: 20160929_171923_edit2_small.jpg]

1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump
Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes
  Reply
#6
on Mine there was a 2 inch wide black plastic filler piece that covered the gap. It was rotted to hell so I didnt put it back on. No issues yet, but I havnt run the AC because its dead at the moment.

"I drank what?" - Socrates
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