Ok guys, show me your work.

Thrashingcows / Jimbo

https://www.dieseltruckresource.com/...c-t289065.html

I know that some of you have talked about and others have actually converted the non intercooled C-171 compressor on your 1991 to use the intercooled style Sanden SD709.

How are they working, any noticeable cooling difference because of the difference in displacement 170cc vs 154cc?

Have you actually got the lines connected and a working system,

What refrigerant are you using R-12 R-134a ?

It looks like the lines can be converted using custom stubs to the compressor.

So does anyone have any pictures of their install, I want to start gathering parts although I am currently running a new C171 but I want to use a newer Sanden unit.

What did you use for the hoses, I was thinking about having fittings welded on to my old line so I could replace my hoses using common barrier hose making them a repairable unit.

So show me what you did.

Thanks Jim

 

I converting mine. I'm using the lines from a 93 along with the compressor, condenser and mount on the engine.

I haven't installed it yet.

 

Unfortunately I still have not got to finishing up my retro fit on the A/C. Now I'm looking at changing the rad support to the 91-93 IC unit...so what I've currently done might no longer work.

But I'm still going to be changing all the lines and fittings to make things more "generic" and easier to find parts if things go bad. Maybe this winter I'll finally get the A/C working........

 

Although I haven't done any conversion, we did replace everything but the switch on the wife's 1991.5 with brand-new parts.

There was one big pressure hose that is impossible to find/buy PERIOD.

The factory hose ends, once the crimps are cut away, are smooth, with no barbs or what-have-you.

Three different A/C hose-making shops refused to crimp new hose on these ends, which would have cured the un-available hose problem.

One shop was able to send MY OLD HOSE-ENDS away to the big city, where they welded ridges/barbs on the ends and crimped on a new hose to the tune of around $150.

Which is why the next time I have such to deal with, I am going to do whatever it takes to install hoses with plain old find-anywhere ends, be they SAE, NPT, or JIC, whatever will work.


Thus, if you are intending major A/C surgery, I highly suggest you have the hose issues all planned out before you tear into it.





By the way, after several years, her A/C, with a pinned fan-clutch and genuine ball-cut-off valve in the heater-hose has regularly been holding vent temperatures of 30* to 31* American in this high-humidity near-100* heat.

 

Please enlighten me; what is common barrier hose ??


Thanks.

 

I haven't been able to get around to installing mine yet or even ordering the compressor . The powerstroke i/c and 3" tubes is on the top of my list. I'll probably have all my a/c figured out by the time winter rolls around, then I won't even need it until a few months later .

 

well I have the opposite issue I have Ac and am adding an inter cooler to the front in a non IC truck ah the days just keep getting looooonger

 

Well Jim I'm kind of in the same boat. Just received my PS IC the other day, and now I want to install it before I start routing hoses. So now I have to get my HX35 rebuilt and then...and then...and then...

 

Geez I would have thought someone would have a working system by now,
Here is what I am thinking.

How about I get someone to donate the lower water outlet and compressor to me and then I will make the conversion and figure out the necessary hoses and then I will post the results.

Anyone with a spare bracket laying around?

I need to take a look at a compressor mounted on the engine to see if it could be as simple as 2 stub hoses and appropriate Beadlock fittings.

Jimbo,
Do you have a compressor mounted on your truck or are you running just the bracket, you are the only person I know of in SoCal with a 1st.Gen Dodge.


There are many places you can get the Beadlock fittings to make your own custom hoses for the conversion.

http://www.acsource.com/hosefittingsbeadlock.aspx

Here are some weld on hose barbs,

http://www.coldhose.com/cat/weld-on-barbs-20.php

About any part you need to make your own hose,

http://www.coldhose.com/

Bearkiller,
Barrier hose has an inner liner of neoprene rubber for sealing to fittings and a Nylon liner (Barrier) to provide a barrier to refrigerant permeation.

With a sensitive electronic leak detector you can detect the refrigerant permeating through the jacket of older rubber hoses.

Jim

 

Just curious, why the need for the different water-outlet just to swap compressor types ??

I have spare compressors on hand of both types, 1989 non-I/C and 1991.5 Sanden I/C.

Up until now, I had assumed they were pretty much the same dimensions.


You have me curious now and maybe, if I get a few spare minutes, I will dig them both out and compare them side-by-side.



Thanks; that makes sense now.

I am assuming that the older hoses did not have this barrier; how much older are we talking; as in, which did our trucks come equipped with ??

Thanks; I'm still a'larnin' (learning).

 

Hey Bearkiller,
The lower hose outlet needs to be replaced using the intercooled style bracket since this is what the compressor mounts to, if you compare the C-171 and the Sanden SD709 compressors together you will see they mount different as night and day, also the suction and discharge lines are different with the C-171 mount off from the top of the unit while the SD709 connections are on the end housing.

Used parts for these trucks are really scarce out here in SoCal so I am looking for anyone who could help me out.

PM me if you know of any supply of these mechanical parts.

Did you ever get a manual for your personal truck fleet?

When they started using R134a the new Barrier hoses came into use, pretty sure the systems back in the 70's and 80's were the old style.

Thanks Jim

 

Here's the pic I posted in my other thread...linked above. It shows the difference between the C171 (left) and Sanden(right) compressor/water outlet mounts.

 

Jim,

Have you called Cummins for a price on the water inlet connection? I don't have a part number but you could use ESN 44609750 for them to look it up.

 

From my viewpoint of those outlet brackets, it appears to me that the difference could be employed on a fabricated plate-adapter that attached onto the early set-up.

 

Not as of yet.

The mainest parts I need are the wiring diagrams for 1990 non-I/C and 1991.5 I/C AND detailed pictures and instructions concerning the LE tilt-columns and 1990 non-tilt columns.



As for used parts in this area, seeing as this is the poverty-stricken minimum-wage welfare meth capitol of the earth, and scrap-metal is at an all-time high, anything that isn't welded tight and watched close has been hauled across the scales.


It is sad really to watch good savable/restorable old classic trucks and cars passing by on old rickety trailers with black-berry briars and honey-suckle vines hanging out the windows, old washing machines and swingsets piled in and on top of them, all headed across the scales at EDCO metals, right now $280/ton.


Obamanomics and high scrap prices has done more to purge the country of good old vehicles that ten cash-for-clunkers programs could have.



Another piece of gone.