Technical Tips > Electrical-Electronics-Air-Lighting-Guages-Security-Vacuum
A/C was R12 then R134a - now what Hychill 30.
Vettech:
After my last post I was ready to burn it, however, it now has a new OTube albeit a 0.062" and it would appear that the original white GM Otube shoud be 0.072" anyway its in and regassed to what is calculated ˜340gms. BUT was still giving short sycles and "low gas alarm". AGAIN...
So today I decided the computer is correct - I'm wrong sorry not correct.
Put the gear on - ran up to temp, slopped some more gas in, now low side is ˜30psi and high at 180psi. (must be close to 400gms Hychill -30)
Compressor would cycle off at 22,5psi (normal R12 Pressure), now stays on, runs great - cool as ICE inside the cab.
Went for my test drive, stayed cool, it even rained so I could test the screen defrost.
HOWEVER this has highlighted the fact that even though the fan is screeming, the amount of air flow leaves a lot to be desired.
This can be left to a later date, but if anyone out there has a 90 or so C4 and could comment on the air flow - it would be appreciated.
These settings in the Mustang would freeze you, esp if you have the seat also switched on.
Except for all the forthcoming praise I suspect this topic is now closed. (fingers and toes crossed)
Vettech:
Just when you thought it is over..
When I get back from the Nats - I can spend some time on the 87.
Because it is a mirror conversion, I may look for an early Commodore A/C package, from memory they look identicle but off course the unit is on the LH side.
My pet hate with conversions is the loss of "outside" air flow, maybe a Commodore unit will allow this feature.
Be good to get some clean air flow thru the car, esp to dry out and remove odours and moisture.
Regards
bfit:
Sounds like a lot of latent heat to me.
Bfit
Vettech:
Well just returned from a trip out west.
The car went great.
The A/C went even better - tested in all modes, all temps etc etc.
However the fan/air speed and flow will need attention.
Since this requires seat out, under dash pads out and person jambed head first up under dash, it can wait, I think its realy time now to enjoy the fruits..
The run to Qld will be the acid test, no failures will be a good recommendation of Hychill -30.
Regards.
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