Condenser size (AC condenser) - Page 2 - PeachParts Mercedes-Benz Forum

my123ca · #16 07-03-2011, 04:16 PM

Quote:

Originally Posted by Marvelicious

OK, if this system works when you are done, you have to do a real complete write up on it. Seriously, because I'm right behind you if it does!

You can try the newer style original condenser for the SD. It has a smaller diameter tubing. I've seen it on the '85 SDs. Might work better with R134 and you wont have to modify too much. Somehow the R4 compressor didnt work too well with the Pflow condenser in my case. Worked great for a while. Was getting 38-40F out the vents with high 90s ambient then the compressor started knocking.

1980sd · #17 07-05-2011, 03:21 PM

Here's what I got:

Area wise this thing is about the same size, volume wise it seems tiny

It's just a really different design...

I think the header tanks have dividers part way down on the inside.

leathermang · #18 07-05-2011, 03:31 PM

OOOHHHHH..... new stuff is always pretty.....

1980sd · #19 07-05-2011, 03:34 PM

But will it work?

DeliveryValve · #20 07-05-2011, 03:49 PM

It will work. My PF condenser is smaller and eventually used less refrigerant. Been working great for almost 5 years now.

My only regret is not cleaning out the evaporator. I think it is clogged and it's not pushing the air fast enough as I like, but does a decent enough job that I am not too worried about it for the past 5 years. You might want to consider cleaning it out since you have it all apart.

.

engatwork · #21 07-05-2011, 03:50 PM

As long as you can get air flow through it you should be fine. What are the dimensions? Maybe a front shroud off of a early 90's e-class? Give me a couple days and I'll provide some dimensions.

e class fans

1980sd · #22 07-05-2011, 04:28 PM

The core dimensions are 15" X 18" and the inside diameter of the header tubes is 3/4".

It's a generic e-bay job that says "Global Air" on the side.

JHZR2 · #23 07-05-2011, 04:39 PM

Less volume is opposite of what I'd be striving for... More working fluid plus more and/or more efficient heat exchanger is the name of the game IMO.

1980sd · #24 07-05-2011, 07:04 PM

Quote:

Originally Posted by JHZR2

Less volume is opposite of what I'd be striving for... More working fluid plus more and/or more efficient heat exchanger is the name of the game IMO.

I agree. Common sense seems to lead to more volume. I don't even see how this p-flow deal is even supposed to work

Both the inlet and outlet are on the same side. Seems like the refrigerant is just going to travel straight down the header unless there is a baffle in there

This new condenser just feels tiny compared to big thick old one.

engatwork · #25 07-05-2011, 07:18 PM

Back in the day GM used this jewel. Based on everything I have seen it was a big, heavy and durable compressor. They referred to it as an A6.

A6 compressor

leathermang · #26 07-05-2011, 08:18 PM

Fabulous is as Fabulous Does....

Why don't you measure the inside volume of the two so you can compare them .... as compared to standing there looking at both of them ? These types of measurements are done all the time with liquids.... of course you could get fancy and try the garbage bag method...like the blowby measurements of a few years ago...

JHZR2 · #27 07-05-2011, 08:34 PM

Quote:

Originally Posted by 1980sd

I agree. Common sense seems to lead to more volume. I don't even see how this p-flow deal is even supposed to work

Both the inlet and outlet are on the same side. Seems like the refrigerant is just going to travel straight down the header unless there is a baffle in there

This new condenser just feels tiny compared to big thick old one.

Well in a fully designed new 134a system with optimized compressor, condensor and evaporator, I know the systems work well with minimal working fluid.

Problem is that we are adding parts from different cycle designs and who knows what the result will be.

Optimized condensor geometry does likely pay dividends. Question is if it will make a difference in a system of different other components.

1980sd · #28 07-05-2011, 09:00 PM

Are most modern 134a systems TXV or orifice tube?

I might need a garbage bag for all this ***** before it's over

I did think about measuring the volume with liquid but a smart guy could use math... Figure out the tube length/diameter for the old one, figure the header tube length/diameter for the new one and do the volume. Then estimate the volume of the tubes on the new one.

Word on the street seems to say they work.

leathermang · #29 07-05-2011, 09:05 PM

Orifice Tube .

1980sd · #30 07-05-2011, 09:20 PM

Quote:

Originally Posted by leathermang

Orifice Tube .

Don't newer systems have different types of evaporators as well.