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A/C system recharge DIY
#21
If I remember correctly the R12 capacity of the system was 1lb 12 oz or 1.75 lbs. the R134A amount would be (1.75 * 0.9) - 0.25 = 1.325 lbs or just over 21 oz. Hope this helps.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#22
(06-07-2019, 01:47 PM)73pony Wrote: If I remember correctly the R12 capacity of the system was 1lb 12 oz or 1.75 lbs. the R134A amount would be (1.75 * 0.9) - 0.25 = 1.325 lbs or just over 21 oz. Hope this helps.

Based on that, I got close, but I don't know how close. I am definitely under 24 oz and somewhere above 16oz. My compressor is not the original. It was replaced in 2003 with a York ET210.

        [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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#23
Based on the pressure numbers of 210 and 20 assuming 80 F you are good to go. Could prob handle an oz especially if it was possibly a little over 80 and the warmer temp under the hood.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
  Reply
#24
(06-07-2019, 03:15 PM)73pony Wrote: Based on the pressure numbers of 210 and 20 assuming 80 F you are good to go. Could prob handle an oz especially if it was possibly a little over 80 and the warmer temp under the hood.

I will drive it like this for a little and see how it goes. It will be easy to go back and add a little more if needed. Today the car was in sun the whole morning and it was hot. It took a while for the temp to go down but it eventually did. The internal fan when at full power is very loud like a large turbofan engine without the jet sound. whistling

        [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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#25
The excessively loud blower could be a sign the blower is going out or it could just be dirty or have debris blocking it.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
  Reply
#26
Well I went down and charged my AC and did find the leak. It was blowing cold air for sure and bubbles in the sight glass from one 6 oz. can of the Duracool refrigerant. So the lube had the dye marker in it but I could find nothing with the black light. The sniffer for normal refrigerant will not work on this so I could not use that. I was giving up figured might be inside the car in the heater box maybe.
I had taken the gages off and was going to put the protective caps back on the R-134 adapters. I noticed gas coming from the high pressure connection. The schrader valve in the brand new adapter is leaking. Angry So I will let it leak out over night and take it off and see what is up. I do hope that is the only leak so I can get it cooling couple shows coming up a couple hundred miles to visit and getting hot.
People that see the car at shows want to know why you would have AC on a convertible. My answer is always "you have never owned one have you"? You can't ride very long with the top down or you are cooked.


When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#27
This probably won't help (since you went down the path a renting full guagues and lines).......but I recently had front end repair on a 2010 Escape and rather than rent/invest in 134 set up I purchased the newest FILL CAN of 134A.

IT CAME WITH TWO PLASTIC CLIPS (that had I not read the directions I would have tossed) !!! They are to go into the AC vent IN THE CAR! (my fiend thought they were fragrance) LOL Turns out it is 2019 "technology". Color change plastic -that as you fill the system they change color a few times - so you know the optimum amount (as amount effect cooling).

Worked out well -as all I wanted to do was refill.
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#28
(06-09-2019, 07:19 AM)SVO2SCJ Wrote: This probably won't help (since you went down the path a renting full guagues and lines).......but I recently had front end repair on a 2010 Escape and rather than rent/invest in 134 set up I purchased the newest FILL CAN of 134A.

IT CAME WITH TWO PLASTIC CLIPS (that had I not read the directions I would have tossed) !!! They are to go into the AC vent IN THE CAR! (my fiend thought they were fragrance) LOL Turns out it is 2019 "technology". Color change plastic -that as you fill the system they change color a few times - so you know the optimum amount (as amount effect cooling).

Worked out well -as all I wanted to do was refill.
All we need to know is what air temperature to expect coming out of the duct and measure with a thermometer. I have read about 40F but i am not sure. That sounds very cold.

Sent from my SAMSUNG-SM-G930A using Tapatalk

        [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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