Hey Guys,

Despite my previous post, I'm still confused on the A/C system.... why couldn't they keep it one freakin' system!!!1

I took these pics:
http://fattyslims.com/vette/pics/VIRELMASSEM/Resized/

That is the only canister in the car, and it's attached to the Evaporator. All the tubes/hosing seems to go back to that. Is this the VIR Assembly? Is the Drier/Acumulator built into this? What part do I have to buy to replace it? I'm so confused, its not even funny.

 

Thanks guys,

-Louis

new77guy38716.037037037

That is the VIR, Valves in reciever, system.  All the hoses do connect to the VIR.    Two go to the evaporator in the dash, two go to the condenser in front of the radiator and tie in with the compressor on the way.  You have an oil return line as well.

Freon flows from the compressor to the condenser in front as a high pressure gas, to the VIR from the condenser as a high pressure liquid, From the VIR to the evaporator as a low pressure liquid, to the VIR from the evaporator as a low pressure gas, and from the VIR back to the compressor still as a low pressure gas.  The Compressor turns it back into a high pressure gas.

All of the control valves and the reciever dryer are inside the VIR.

Hey Ken,

Thanks for clearing that up..
I just had the compressor rebuilt. Should I replace the VIR Eliminator or is it ok? I know the Evaporator core is ok. Botht he Eliminator, and the EVAP have stickers on them that says: "REBUILT FOR GM" and have product numbers.
Plus the dude gave me a white filter, its long... and said it was supposed to go in a tube. He said which one... but I got the dlow mixed up, and forgot. Is it betweent eh two hard lines from the condensor to the VIR ELIMINATOR?
I already bought the main hoses from Ecklers as well...

Thanks,
-Lou

new77guy38715.9374537037

There is no eliminator in a VIR system.  The tube you discribe sounds like an orifice tube.  The eliminator I'm guessing is a kit to convert the car to an orifice tube system, and replace the VIR assy, and eliminate the VIR.

This is one of the options I suggested.  Post a picture of the eliminator, and I will know for sure, and then I can give you some more direction.

Hey Ken,

There are 3 big components in my system. the VIR, the compressor, adn the EVAP/BLOWER

I don't remember taking an Eliminator off.
However this is the picture of the heart or the VIR:


I matched the tubes up with ones on Ecklers and I got these as direct replacments to the ones taht are already there:
http://www.ecklers.com/product.asp?pf%5Fid=27072&dept%5F id=1183


I accidently got this one:
http://www.ecklers.com/product.asp?pf%5Fid=46712&dept%5F id=1189
Instead of this one:
http://www.ecklers.com/product.asp?pf%5Fid=46711&dept%5F id=1189

Now I have to call Ecklers...... But before I do... must I buya  new VIR unit since I had the compressor rebuilt, adn its a new condensor? Or is it fine the way it is? I'ts going to get a flush anyway before I charge it.

This crap is confusing.... there are way too many A/C systems out there.

 

Thanks Ken,
-Lou

WOW! Totally lost here....

I was doing some more research.... and I don;t know if I should definatly replace that VIR... it's $177 from Ecklers + the maitnace kit $27.99 I'd rather not convert to any system. I'd rather just keep it all the same. What do you guys think?

 That system was a PIA when new. If the system has been left open for any length of time moisture will destroy the desicant in the vir accumulator. And moisture in a refrigerant system is a big NO NO.When did my 73 I used a 78 evaporator with the orfice tube. Make sure everything is flushed properly. I then switched over to 134a. 

{Reason they changed? They were troublesome units}  

Kiltime38718.7843981481

Ok... so hers the new news.....

We opened up the EVAP, which I didn;t want to do, but I needed a stratight foward answer. THe EVAP core is NEW! It has 1991 written on it, and it doesn't have any rust, and it doesn;t leak. Which means that the VIR was also new/remanufactured. Its as clean as a whistle inside the VIR as well. But there is one other thing puzzling me. On the MAIN copressor hose that was on teh car already, it has a male end that goes into the VIR. The new hose as a female end, like the VIR. I looked on the new main compressor hose and it says R134A writtin on it. I know if I get the conversion REtro kit its going to have fittings. Is this one of them? To properly convert that hose? I ordered it from Ecklers, right year, right system, ect....

 

Thanks,
-Lou

new77guy38719.0963657407

I would guess the new hose is incorrect. Is there a part number on the hose? I have one in my hand it is new, has the male end and 134 on the hose.Made by Parkerhannifin the p/n is 12529014. Btw what year is your car? I got on this post a little late. I am talking 73. But if you have a 77 there is an early and late version

Hey guys,

Yeah, I figured out what happened. Eckelrs sent me a hose for the  Auucmulater/Drier system. I specified VIR. I didn't really think to look at it thourghouly when I got it. But now that everything is ready to go together, I noticed the issue. However, Corvette Central has the hose I need for $119. Ecklers would want $189.99. So I'm going to return the hose to them, and get the correct one from CC. I just hope I'm going to have enough money for Pamona on the 16th, and enough for the exhaust. But just to confirm... is this list ok:

VIR ASSEMBLY (REBUILT 1991 FUNCTIONAL AND CLEAN)

EVAPORATOR CORE (REPLACED 1991 FUNCTIONAL AND CLEAN - NO RUST)

MAIN COMPRESSOR HOSE: http://www.parts123.com/parts123/yb.dll?parta~dyndetail~0000 050g~AAUQZ~119.95~~~~1P003FWZW70180110223a~~0000050G
Part #453111
AIR CONDITIONER HOSE -76 LATE, 77 EARLY MAIN COMPRESSOR(76-77 W/R4 COMPRESSOR,77 W/VIR) CORVETTE CENTRAL

http://www.ecklers.com/product.asp?pf%5Fid=46711&dept%5F id=1189
1973-77E Air Conditioning V.I.R. Inlet Service Block With Sight Glass Tube
PART NUMBER: 46711 ECKLERS
OR IS IT THIS ONE:
http://www.ecklers.com/product.asp?pf%5Fid=46712&dept%5F id=1189

REBUILT R4 COMPRESSOR

THANKS GUYS,

-LOUIS

new77guy38719.8867476852