r-12 question
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Joined: Mar 2003
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From: algonquin il
Car: 1989 gta
Engine: L98 D1SC procharger twin IC
Transmission: 700r4
Axle/Gears: 3.27
r-12 question
hey guys my system has been dead for 10 years . i do havac for a living... im going to nitrogen the system to check for leaks ...vaccum down the system ...what i need to know how much r12 is the factory charge and also since its been dead for so long im wondering if i need to and any oil to the system since im not going to 134a ?
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Member
Joined: Mar 2003
Posts: 224
Likes: 0
From: algonquin il
Car: 1989 gta
Engine: L98 D1SC procharger twin IC
Transmission: 700r4
Axle/Gears: 3.27
Re: r-12 question
does anyone know the the amount the factory charge is...is it 2lb or 2lb 6oz of r12????
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From: Maryland
Car: 1993 Toyota Supra
Engine: Inline 6
Transmission: 6 Speed
Axle/Gears: 3.13
Re: r-12 question
If you have trouble finding R12, I might have a few cans left in the garage that i can sell.
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Joined: Sep 2006
Posts: 2,118
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From: Houston, TX
Car: 1989 GTA
Engine: SuperRam 350
Transmission: Pro Built S/S TH700R4
Axle/Gears: 3.27
Re: r-12 question
On my car, the R-12 is 2.25 lbs.
As for the mineral oil. I'm not sure really. I don't think it would have corroded. On the other hand, if it hasn't been circulated in that long, who knows. I guess you could see how loud the compressor is. Maybe add an oz of oil. I'm just guessing.
As for the mineral oil. I'm not sure really. I don't think it would have corroded. On the other hand, if it hasn't been circulated in that long, who knows. I guess you could see how loud the compressor is. Maybe add an oz of oil. I'm just guessing.
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Joined: Aug 1999
Posts: 19,282
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: r-12 question
Just a note. The common impression is that R12 is difficult and/or impossible to find, but I've never experienced that problem either in my former community of 1800 souls or here in Lawrence (going in for a charge on Monday).
JamesC
JamesC
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: r-12 question
I converted mine over to R-134A, I actually had it professionally done and it works really well... I tried the DIY conversion and it was ok, but once I had them drain the system, and recharge it fresh it was great...
R134A is a ton cheeper too...
If you have R-12 then go for it. As for the weight, I am no expert but I usually charged it until the pressures were right on the gages... maybe that was my problem...
John
R134A is a ton cheeper too...
If you have R-12 then go for it. As for the weight, I am no expert but I usually charged it until the pressures were right on the gages... maybe that was my problem...
John
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: r-12 question
JamesC
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Joined: Sep 2006
Posts: 2,118
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From: Houston, TX
Car: 1989 GTA
Engine: SuperRam 350
Transmission: Pro Built S/S TH700R4
Axle/Gears: 3.27
Re: r-12 question
----------
Did you ever measure the vent temperatures of each?
Last edited by Reid Fleming; Jun 11, 2008 at 12:52 PM. Reason: Automerged Doublepost
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
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