how much r134a for a complete fill

[llamaking122]

SO im actually going to have a/c but what i need to know is how much r134a i need to fill it with after its been vacuumed

 

[St Louis SHO]

R12 car or R134 car? (is it retrofitted or factory)

Factory R12 car, R134a fill is 1,75lb
Factory 134a car is 2lb

 

[Airborne]

Does this also mean that an R12 car gets 1.75lbs of R12 if it hasn't been converted?

Thanks

 

[rbruso]

I've always used 75-80% of the stated R12 fill for a converted R134a system, then check pressures and temperatures.

Just did mine at 80% of stated R12 and it's running as good as can be expected in the Arizona heat.

 

[Airborne]

But how much r12 do I put in? I am not converting to r134.

 

[Racer X]

2lbs of R12 if I recall, but more importantly where the **** are you getting R12 from? That's shit's been unobtanium for over a decade.

 

[Airborne]

2lbs of R12 if I recall, but more importantly where the **** are you getting R12 from? That's shit's been unobtanium for over a decade.

Maybe in NY. Here in AZ a lot of shops service r12 and if you work on your own stuff an epa 609 licence is easy to get and then you are legal to buy.

 

[93rev2sev]

In Michigan and NY we have "winter". In Arizona, they have copious amounts of refrigerant.

 

[projectSHO89]

2lbs of R12 if I recall, but more importantly where the **** are you getting R12 from? That's shit's been unobtanium for over a decade.

Nonsense. It's available to anyone with a 609 certificate.

 

[SHOtimer]

Nonsense. It's available to anyone with a 609 certificate.

That was my thought exactly.

I can get it here in Ca at the drop of a hat. It isn't cheap, but it is there.

Doug

 

[JRA2000TL]

Yep, R12 is abundant here; local parts store, a/c service places, Ebay, etc. $$$$$

 

[jelloslug]

2lbs of R12 if I recall, but more importantly where the **** are you getting R12 from? That's shit's been unobtanium for over a decade.

I have several 25+ year old cans of it left over from when it was 75 cents a can.

 

[RonPorter]

Not too abundant here. but the shop that does most of my work is primarily a radiator & a/c shop. They gave me an R12 fill on the Fiero years back. And it wasn't cheap!!

The Garage Queen will always remain R12, so I'm glad I have a source.

FWIW, nephew says the Fiero a/c system is leaking, and he has a local guy in Indy who lives & breathes Fieros and does his work, so he's just converting to R134a this time around.

 

[tommyturbo]

just a note, there is a decal on your radiator support that says how much your car takes.

Also I've noticed that my R12 SHO's cool much more effectively than the R134's do. Damn EPA or who ever that forced those silly changes. Seems like the R134 cars have to be moving at sustained high speed to really cool the interior, where as even at a stop or slow speeds the R12 is blowing cold. Yes I've checked and the R134 systems are fully charged and fans are working.

 

[Racer X]

Given the almost impossibility of getting R12 in NYC, I've thought about trying one of the HC refrigerants, since the R134 (a) cools like poo, and (b) saps no less than 219HP from the SHO V6 when the compressor is running.

 

[JRA2000TL]

On the newer cars 134a seems to cool pretty well; not sure if it's just the newer compressors and newer technology, but my 4Runner is has pretty damn cold a/c. It's been so long since I've had a car with a good working R12 system, that I don't remember those "good old days" since my 90's had "freeze 12" (just like 134a) and it had a leak.

Both my 89 and 95 have the 134a; and until the 89's compressor recently shit the bed, I got down to 38 degrees out of the center vents. That's pretty good. Hand-stinging cold. I'm guessing with R-12, you might get to 34 or 35; but not much of a difference.

Maybe the reason 134 gets complaints for our cars is that our older cars were better designed for the 12.

 

[Airborne]

The Garage Queen will always remain R12, so I'm glad I have a source.

QUOTE]

Same with the ’91. Just recently the AC stopped blowing cold and I don’t want anyone working on it but me. So, I bought a R12 manifold and gauge set and diagnosed it as having a clogged orifice tube. I got my 609 certification, some R12 Freon and a used R12 recovery machine for about the same price as having a shop fix the AC for me.
But before I got a chance to fix the ’91 AC, the compressor in the ’89 started to make some real noise. So, since I have all the components off I will converting the ’89 back to R12. R134 works ok I guess, but the '89 never came close to the frigid temperatures I achieve in the '91 with R12. I will just take the car to a shop and have the R134 recovered. Doing the work myself, it will be about half the price as taking it to a shop, even with the R12 conversion.

Thanks, the label on the ’89 isn’t legible but the ’91 is clear as day.

 

[rbruso]

Maybe the reason 134 gets complaints for our cars is that our older cars were better designed for the 12.

Bingo. An A/C system is very sensitive to the transition pressures/temperatures of the gas in the system. A system designed for R12 will work with 134, just not as well. Some of the early factory 134 systems weren't really redesigned from the ground up, so they weren't as efficient as they could be.

Newer 134 systems can blow plenty cold. Of course, if for some reason 134 falls out of favor and is replaced with something less efficient we will see a similar situation with conversions not cooling as well.

 

[Phoenix]

Good luck finding R12 in Canada.

At least where Im at.

 

[shotime1994]

2lbs of R12 if I recall, but more importantly where the **** are you getting R12 from? That's shit's been unobtanium for over a decade.

Hamal I have a bunch of 30lbs bottles of r 12 hidden.