If I recall correctly, there was someone who had worked out a serpentine belt conversion for a B/RB engine without spending stupid amount of money for an aftermarket kit.

The long unsupported run of the twin belts from the A/C compressor on the left to the alternator on the right has me thinking of going down this path. There are no matched pair belts to be found these days and I haven't had any luck finding two belts that will track the same.

Jerry is the guy that has that stuff. There's another guy on the board who worked for a belt company that got me matched belts a couple times. I can't find his contact info at the moment...

SD Concepts. I have his system, have not run it yet, but really like the use of readily available service parts.

I have this setup on a few cars both serpentine and normal, was still not cheap but far more affordable then the several thousand dollar systems.

http://www.cvfracing.com/

I have the serpentine setup and their PS pump on a truck - all their stuff I have bought looks and fits perfect.

feets check out sdconcepts.com all of our big block kits are posted.

Will a Sanden 508 move the same volume as the old RV2?
Keep in mind that I have twin evaporators and run 72 ounces of R12 in the system.

that's a good question. I don't know. it will eventually get cold, ultimately the new compressor will circulate all the refrigerant but maybe at a slightly slower rate? everyone that runs the 508s runs them on single evaporator systems that I know of.

This is a BIG black car in Texas.

The RV2 pump keeps it cool. I'm concerned about the little 508 being big enough to do the job.

Are your pulleys set to overdrive, underdrive, or 1:1 the compressor?

they are whatever the factory ratio was on the dodge magnum truck engines. we make a full size crank pulley at just about 7.25 in dia and the 508 compressor pulley is just about 5.25 in dia

Maybe go with a 709 ? From memory, the 508 is a 5 piston design and the 709 is a 7 piston (bit higher volume)

And if all else fails...

http://www.sanden.com/contact.html

U.S. Headquarters
Sanden International (USA), Inc.
601 S. Sanden Blvd.
Wylie, TX 75098


They should know Texas heat at least.

The compressor only runs about 25% maybe 30% of the time in a Dakota. It may just end up running a higher duty cycle. On a daily driver this may mean wearing our more quickly, so instead of lasting over 100k miles it may only last 50k. How long will it take you to rack up 50k miles?

Wylie is only 15 miles from work but it might as well be on another planet when you consider that I live 23 miles the other way and I'm not going to fight that traffic.

I tried looking at their site but didn't get much info.

Do you know if the 120 amp denso alternator is able to be fit into the kit? I would buy this if there is a way to fit the alternator in the andyf kit to this serpentine setup.

Believe it or not, the compressor runs all the time on these systems.

http://imperialclub.com/Repair/Lit/Master/295/page07.htm

I do have the Unwired Tools A/C servo replacement for Mercedes cars. My car has the AutoTemp II system that Chrysler sold to Mercedes in 1975. I'm not sure if it'll stop the full time compressor or not.

we run a nippendenso alternator in our kit. so the one andy has in his kit should work. there are a few variations of the nippendenso alternator but we have adapters for most if needed.

on the ac the 508 will circulate all the refrigerant, it just might take a little longer than the RV2 and by that I mean its going to 30 seconds to a minute longer at idle. obviously cool down will take as long as it does based on how much flow you have going through the condenser in front of the radiator.

I don't think running it all the time will be a problem. these are meant to run in production cars. there probably is some peak duty cycle you don't want to exceed but don't forget these are used on minivans these days that have rear seat ac as well and they work just fine there.

I have a Sanden on my 68 BLACK Charger with the original evap, I am in Katy Texas & when it is 106 outside it will still freeze you out, I put an adjustable thermostatic cycling switch on it so it wont freeze up the evap. I have done 2 Chargers this way.
I also did intall a r134 condenser on them.

I run (and like) a 508 type compressor on my "single" system. From memory, the 508 moves somewhat less refrigerant vs the RV2. For full performance with a double system you may be better off with the higher capacity Sanden.

Bouchillon and Classic Auto Air in Florida seem to be pretty knowledgeable about these systems. Maybe call and get their recommendation.

Feets if you do want the larger compressor, I can mod our bracket for your application