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1980 924 Turbo Project

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Old 06-11-2024, 11:06 AM
  #136  
BauerR
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Originally Posted by Guy
They come on when the gauge touches the red.


Your fans should def come on before the gauge hits the red. You may have a switch problem

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Old 06-12-2024, 08:58 AM
  #137  
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Did you put on the low temp thermostat?
Old 06-21-2024, 01:54 PM
  #138  
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Originally Posted by 924RACR
Did you put on the low temp thermostat?
Using a stock thermosswitch for the fans.

I did a second bleed and got a stubborn air pocket out. Seems to have done the trick. Fans come on right before third line now and cools the car right down. Hopefully charging the AC next week.
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Old 06-26-2024, 10:49 AM
  #139  
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...but there's a few different temperature thermostats, I prefer the lowest one for the Turbo...
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Old 06-28-2024, 02:38 AM
  #140  
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I drilled a 3/16 hole in the thermostat, just to make sure there is always coolant circulating, since they run hot
Old 07-09-2024, 09:16 AM
  #141  
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Originally Posted by 924RACR
...but there's a few different temperature thermostats, I prefer the lowest one for the Turbo...
yep, I thought they were marked but this one was on the shelf in my stash and has no markings. I may just order a lower switch and thermostat just to be sure.

It's been hotter than hell here and it stays below the red even in spirited driving. Did a local car show on Sunday and it was flawless to drive.


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Old 07-23-2024, 12:57 PM
  #142  
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Happy to report another milestone. I now have working air conditioning. Enjoyed a 30 mile ride the other day in cool comfort!!

Looks like it's time to move on to my 79 928 project.


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Old 07-23-2024, 02:10 PM
  #143  
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Originally Posted by Guy
Happy to report another milestone. I now have working air conditioning. Enjoyed a 30 mile ride the other day in cool comfort!!

Looks like it's time to move on to my 79 928 project.
Nicely done! How effective is the A/C?
Other than the condenser, were there any other aftermarket components used?
Old 07-23-2024, 02:29 PM
  #144  
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Originally Posted by BauerR
Nicely done! How effective is the A/C?
Other than the condenser, were there any other aftermarket components used?
I replaced the condenser, receiver/dryer and all the o rings. Compressor is original. Used 26 oz of R134a. I haven't measured the temp output yet but it seems very comparable to my modern R134a cars. It was mid 90s and high humidity outside on my 30 mile ride. I will get my IR thermometer on it soon.

On my 928s, I typically can get around 35 degrees out the vents on an average 85 degree day. I would guess this is going to be more around 40 degrees.

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Old 07-23-2024, 02:39 PM
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Originally Posted by Guy
I replaced the condenser, receiver/dryer and all the o rings. Compressor is original. Used 26 oz of R134a. I haven't measured the temp output yet but it seems very comparable to my modern R134a cars. It was mid 90s and high humidity outside on my 30 mile ride. I will get my IR thermometer on it soon.

On my 928s, I typically can get around 35 degrees out the vents on an average 85 degree day. I would guess this is going to be more around 40 degrees.
Did you vacuum the system or just buy an "off the shelf" pressurized can product from an auto parts store?
Old 07-23-2024, 02:43 PM
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Originally Posted by BauerR
Did you vacuum the system or just buy an "off the shelf" pressurized can product from an auto parts store?
Vac'd down for well over an hour multiple times. I am fortunate in that I have access to shop equipment to add the refrigerant.
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