Re: AC Compressor Question
 

I can see in your picture that you installed a poa update kit. Whats your opinion on it?

Re: AC Compressor Question
 

I can see in your picture that you installed a poa update kit. Whats your opinion on it?

Re: AC Compressor Question
 

That looks nice. I have 2 stock condensers in the attic but when I do this I want to do it right and work well

Re: AC Compressor Question
 

I agree, it does look good. and parallel flow along with the recalibrated poa(or rebuilt if it needs it)valve is the way to go if using 134a

Re: AC Compressor Question
 

Unfortunately I haven't run the engine... yet. I'm having ignition issues with my microsquirt engine controller. My choice of short block (880 Vortec) had me abandon my factory brackets (and new axial compressor) because the short water pump wouldn't fit over the plastic timing cover. So I installed a Camaro serpentine setup and a new R4 compressor.

If the cycling system doesn't work to my satisfaction I'll be putting the POA back on.

Re: AC Compressor Question
 

Call to confirm, I'm pretty sure it is. There was a guy on here that converted to 134 recently and bought all the parts from old air.

Re: AC Compressor Question
 

My setup is from Classic air.
http://www.classicautoair.com/

Very nice people to deal with and they know there stuff.

I bought the Sanden compressor, brackets and hose kit with condenser for 134A. The tubes are bigger for more expansion so that the 134A will flow better. Thus helps with the cooling effect. I did away with the POA and drier altogether. I also closed off the outside cowl vent for better cooling inside the cab.
My AC runs from 40* to 50* depending on how hot it is out side on 100* days it will be closer to 50* but any AC tech will tell you 40* difference is awsume.
Mine will stay at the same temp sitting in traffic to.:chevy:

The kit I got!

http://www.classicautoair.com/images...le(E6-220).jpg


http://www.griffinsautorepair.com/wp...-San-Diego.gif

This picture shows the condenser that I installed.
http://67-72chevytrucks.com/gallery/...4_cold_air.jpg

I did away with the old POA valve and dryer and added the accumulator.
This last picture shows it since the 6.0 LS swap so the bracket has been changed out.:chevy:

http://67-72chevytrucks.com/gallery/...m/DSCF2658.JPG

Re: AC Compressor Question
 

The picture with your grill removed showing the condenser you installed doesn't look like the one in the picabove of the Classic Auto Air kit. That looks like the factory tube and fin condenser.

Re: AC Compressor Question
 

It is tube and fin. Serpentine too.

The one in the add I believe they call it "piccolo" in this picture. The universal one I purchased looks like the one one the right.

http://i48.photobucket.com/albums/f2...ensertypes.png

Re: AC Compressor Question
 

That's what I was thinking too. Good visual illustration.. That's why I was saying that I didn't believe the ones offered by old air products as a direct bolt on to be a parallel flow either. They look like that piccolo. Here is a pic of their condenser

Re: AC Compressor Question
 

That's because the kit picture is a generic picture. It shows the dryer also. Which I don't have, it's a generic and they sell you the one you need, Da!
It's made for the 134A Freon.:chevy:

Re: AC Compressor Question
 

This is usually the case...which is why people should call and ask. That will remove all doubt and answer the question.

Re: AC Compressor Question
 

oh ok, I just thought what was in the pic is what one would get. Either way, neither one in the generic pic or the one on your truck is a true parallel flow condenser. At least not by the pic above showing the different types on condensers. But if it works then it doesn't matter.

Re: AC Compressor Question
 

I never said true parallel flow condenser for either one. I said they sold this one to me for 134a only with more and bigger tubes for expansion. I have no idea where you got the true parallel flow condenser part.
My system works great! I was just putting info out for a swap that I performed back in the early 90 and has work with no problems since.:chevy:

Re: AC Compressor Question
 

If it's working for you nobody is complaining.

It's not the "expansion" that is important as we're talking about the "condenser". To condense back to a liquid we have to get rid of the heat. That is done with more contact area via the tiny tubes. Parallel flow lets the liquid to drop out while the hotter vapor to stay in the top of the condenser.

Simply put, R134a requires more condenser than R12 to get rid of the heat otherwise pressures are higher and the system is less efficient.

Re: AC Compressor Question
 

[QUOTE=Andy4639;7256425]I never said true parallel flow condenser for either one. I said they sold this one to me for 134a only with more and bigger tubes for expansion. I have no idea where you got the true parallel flow condenser part.
My system works great! I was just putting info out for a swap that I performed back in the early 90 and has work with no problems since.:chevy:[/QUOTE
There was probably a misunderstanding. The discussion of parallel flow and where to buy started before you posted. That's where "the true parallel flow condenser part" came from.

Re: AC Compressor Question
 

Ok, that I understand. I was just saying mine wasn't. Just was making sure the info I put out was correctly took.:chevy: