We're talking about a Vette here with an accumulator. The inlet and outlet on the evap should be close in temp. So charge to 80% and feel the difference. Slowly add more until they feel the same.

The higher capacity listing is most likely for an A6 compressor, which this does not have. Also, there is or was enough refrigerant to engage the clutch if "All" the electrical was operating correctly. Jumping the clutch coil only provides data for a single system component. The data I pos...

tbirdtbird wrote: ↑Wed Apr 19, 2023 1:07 pm If you do the math, Tim's data shows charge to be 2.25 lbs, and your service center (? a brake shop) installed 1.8 lbs).

The data I posted is from ALL data, OE charge.

1986 Chevrolet Corvette V8-350 5.7L (R4 Compressor)

REFRIGERANT CAPACITIES
Refrigerant Charge .................... 1.02 kg (36 oz)
Oil Charge .................... 0.17 kg (6 oz)

JohnHere wrote: ↑Mon Apr 10, 2023 9:50 pm If memory serves, I think you said that the original compressor seized and tossed the drive belt. Can you rotate the clutch hub by hand? If not, the compressor is indeed seized, and a new front seal kit isn't going to fix it.

Think they purchased a wrecking yard unit.

You used a wrecking yard compressor. Odds are the seals were dry from sitting around. It held vacuum until you started spinning the compressor moving parts and adding pressure. Not sure any method is going to provide repeated correct information when using a wrecking yard compressor. IMO.

vehicles without RHVAC 28.2 oz (0.8 kg)
vehicles with 3.5L EcoBoost RHVAC 41.92 oz (1.19 kg)
vehicles with RHVAC 38.8 oz (1.1 kg)

PSI!!!!!!!
What are the vent temperatures? Lower PSI means nothing if you're already freezing the core.

Maybe your file is too large.

Thank you, John.