Spring Special- 7 cyl Sanden Compressor Retrofit Kit for 616/617 - Page 2 - PeachParts Mercedes-Benz Forum

ROLLGUY · #16 03-20-2014, 12:02 PM

Quote:

Originally Posted by SirNik84

Let me know if I can do anything to help get the 126 hoses into production!

If I had a couple sets of hose ends in stock, I would sell the 126 hoses with a core charge for the ends, or just trade at the time of sale. That way I will always have a hose kit ready to sell. It is just that I have not had a need for a 126 hose kit other than mine. Everyone that has bought hoses from me has used them on a 123....Rich

SirNik84 · #17 03-20-2014, 12:29 PM

If I bring you the hoses you need could I have you mail them to me after they're rebuilt? What hoses do you need? I'm the junk yards favorite client these days buying all kinds of little things for my moms car. I could easily grab a set of hoses from the junk yard.
At least your not alone in the 126 camp! lol

ROLLGUY · #18 03-20-2014, 02:04 PM

Quote:

Originally Posted by SirNik84

If I bring you the hoses you need could I have you mail them to me after they're rebuilt? What hoses do you need? I'm the junk yards favorite client these days buying all kinds of little things for my moms car. I could easily grab a set of hoses from the junk yard.
At least your not alone in the 126 camp! lol

I would need the 2 ends of the low side (larger diameter) hose that connects to the fitting near the spring tower, and the other end that connects to the condenser. Photos following...Rich

EDIT: each hose has a special fitting, not just the one hose. See below.

ROLLGUY · #19 03-20-2014, 02:16 PM

Actually, each hose has a custom end on it. One is near the spring tower, the other is at the condenser. I can make up a hose kit using the fittings from my car, as I am not going to fix the A/C for at least another week or two. You can remove the fittings from your car and bring them to the GTG plus maybe another set that I would be happy to pay for (since they like you so much at your local yard

)....Rich

Renntag · #20 03-20-2014, 02:38 PM

I have the original compressor on my 83 300TD. I believe it is dead. This kit interests me.
I will use R134a?
The 7cyl compressor you are offering needs a little more hp to operate, but is more efficient than the other compressors? Will my A/C performance also be better than the original system with R12?

If this is the ticket, I'd like to claim one of your kits please. My wife will be tickled pink to have A/C in the W123 again.

Looking forward to your reply.

BillGrissom · #21 03-20-2014, 03:15 PM

Renntag,

I'll jump in on your questions since I am an opinionated bastard (and occasionally right). I think the 7 cyl Sanden is a bit smoother, with more continuous flow than a 5 cyl, and thus slightly more efficient. The power required is more a function of displacement, which is the last number in the PN, like SD7H15. I used a "13" cc which is slightly shorter and still works fine. I was able to use my factory hoses w/ Rollguy's kit (see post, some bending required), as did another guy. Note that the part numbering is a bit different between R-134A and R-12 compressor lines. You can find Sanden catalogs on line that detail all this. You can use either type. The refrigerant spec simply tells you the type oil it ships with, which you can swap. Indeed, new compressors might be shipping with PAO 68, which is a universal oil (all refrigerants, all viscosities) and better too (doesn't absorb moisture, stays in compressor better).

R-134A requires higher pressures to give the same cooling as R-12. A Sanden is better than the original Harrison R4, but I doubt better enough to overcome the poorer refrigerant. I used hydrocarbon refrigerant (Duracool) in my 85 300D, which works even slightly better than R-12. However, read up before you do that because it scares many people (I see little basis). R-134A is scheduled to be phased out soon.

ROLLGUY · #22 03-20-2014, 06:58 PM

Quote:

Originally Posted by BillGrissom

Renntag,

I'll jump in on your questions since I am an opinionated bastard (and occasionally right). I think the 7 cyl Sanden is a bit smoother, with more continuous flow than a 5 cyl, and thus slightly more efficient. The power required is more a function of displacement, which is the last number in the PN, like SD7H15. I used a "13" cc which is slightly shorter and still works fine. I was able to use my factory hoses w/ Rollguy's kit (see post, some bending required), as did another guy. Note that the part numbering is a bit different between R-134A and R-12 compressor lines. You can find Sanden catalogs on line that detail all this. You can use either type. The refrigerant spec simply tells you the type oil it ships with, which you can swap. Indeed, new compressors might be shipping with PAO 68, which is a universal oil (all refrigerants, all viscosities) and better too (doesn't absorb moisture, stays in compressor better).

R-134A requires higher pressures to give the same cooling as R-12. A Sanden is better than the original Harrison R4, but I doubt better enough to overcome the poorer refrigerant. I used hydrocarbon refrigerant (Duracool) in my 85 300D, which works even slightly better than R-12. However, read up before you do that because it scares many people (I see little basis). R-134A is scheduled to be phased out soon.

Thanks Bill for saving my fingers, not having to type all that. Agreed on all points. My experience is that the Sanden with 134a and a PF condenser with the condenser fan running whenever the compressor is engaged, gives the same if not better (some would argue this) cooling than the R-4 compressor with R12. Even the 123's with the stock condenser running 134a give satisfactory results. I admit that the stock condenser and 134a are no match for hottest days with high humidity in a 123, but it is better than a noisy or non-functional R-4 with R12

....Rich

mach4 · #23 03-20-2014, 07:12 PM

Quote:

Originally Posted by BillGrissom

I used hydrocarbon refrigerant (Duracool) in my 85 300D, which works even slightly better than R-12. However, read up before you do that because it scares many people (I see little basis). R-134A is scheduled to be phased out soon.

Last year I attempted to provide a starting place for people that were interested in becoming more informed to begin the process of reading up on refrigerants in the form of a post on this site. As the title suggests it was done in the context of person wanting to manage their A/C as a do it yourselfer.

The Quest for a 100 percent DIY A-C Setup

Renntag · #24 03-20-2014, 07:31 PM

Thanks for the very informative replies Gentlemen. So what refrigerant would you all suggest and what is the PF Condenser? If it represents a huge expense and mine is fine for now, I might suffer with what I have. (no idea).

ROLLGUY · #25 03-21-2014, 01:58 AM

Quote:

Originally Posted by Renntag

Thanks for the very informative replies Gentlemen. So what refrigerant would you all suggest and what is the PF Condenser? If it represents a huge expense and mine is fine for now, I might suffer with what I have. (no idea).

PF= Parallel Flow They are available from ebay for around $80 (16X20 fits the 123 rather nice)

gear-head · #26 03-22-2014, 02:57 AM

what's the spec's for the fittings on the condenser that will match up to the hoses you make, Rich? Are they #6 and #8?

ROLLGUY · #27 03-26-2014, 12:03 AM

Quote:

Originally Posted by gear-head

what's the spec's for the fittings on the condenser that will match up to the hoses you make, Rich? Are they #6 and #8?

The PF condenser (in the above photo) that is available on ebay has a #6 & #8.

w123fanman · #28 03-26-2014, 01:05 AM

Will the hoses in this kit work with a W116 300SD?

crazy4diesel · #29 03-26-2014, 09:32 AM

I had no idea you made this kit, and I'd bought the Klima kit several months ago. Sadly, I get a little compulsive sometimes, and when I saw the Klima kit I just bought it and put it on the shelf, knowing that at some point in my project I'd be using it.

I began to install it a few weeks ago (then have taken a long break due to some travel) and discovered so many things that were very disappointing: 1) The use of SAE sized nuts and fittings!!!!! I couldn't freaking believe it, I don't own hardly any SAE tools. 2) Bolts that came with the kit to mount the bracket to the Sanden 7-cylinder compressor had heads that were tool large to clear the pulley! Klima did send new allen head bolts that clear, but twice said they'd been sent, when they had not been and then just began to no longer respond to emails or phone calls.

I'm at a point where I'll have to "make it work" given the investment I've put in it, but my experience should help others here to decide.

Hopefully, you guys can help me if I run into more problems.

Renntag · #30 03-26-2014, 09:52 AM

Thanks for the picture.

I found this on ebay in Iowa from radiators-r-us

New Universal AC Condenser 16" x 19" Parallel High Flow Street Rod Truck | eBay

I am unsure if my current condenser is good/leak free. I could certainly pressure test it to be certain. I have to ask how much of an improvement in cooling performance there is with this condenser (PFC) and the 7 cyl compressor as opposed to the stock condenser I have? If the difference is significant, I will make the change. The cooling performance of the W123 as delivered from Mercedes is lack luster at best IMO.

Thanks.

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