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Thanks John, I sent Jim Carpenter a note as I think he may have NOS bracket. While looking at the bracket, I agree that mine looks like it has a tweak in it. I gave it a hit to bend it back in my vice on the bench and it appears to have helped a little. Later this morning I will try to give it some more. I also noticed that the alternator looks a little out, but it is so little that it could also be an optical illusion. I do not have one of those special belt laser devices that cost $500 or more to check the sheeves for alignment. If I get the idle to stop making noise, I may look into the dual A/C “flop” unit you mention. When I hammer the throttle while looking at the belts I can see the dual A/C belts want to “climb” a bit. The other thing I wonder about is using the torque method using Bob’s tools with “V” belts with a cog shape. I am wondering if the cog belts require a different torque specification from the smooth belts. James From: John Nowosacki <jsnowosacki@xxxxxxxxx> The 440 belt system for A/C on my Hurst started to give me problems a few years ago. There were no strange noises, but under high revs (while hammering the loud pedal out on the highway), there was a tendency
for the small belt that goes around the idler/tensioner for the water pump to get tossed, which is obviously not good for engine cooling at such high revs on warm days. The 'fix' came from swapping out the original bracket with an old one I had in my parts
stash. The original bracket had developed a slight tweak and was no longer keeping the belt in proper alignment with the water pump and crank pulley. I believe the bearing/pully itself is still available at auto parts stores, but not the bracket itself.
Might be a good idea to scavenge a couple from A/C cars in junkyards if you can still find some. Also, I used to have a few Jensen Interceptor cars back in the day, which were equipped with 440 engines and A/C. There was an interesting bracket as part of that system that held a 'wheel/idler' that rode
on top of the A/C belts between the compressor and alternator that stopped the flopping of the belts. It was not a tensioner, as the belt tension was still controlled by alternator position, but was just an added item to reduce the flopping of the belts when
the compressor was engaged. Maybe it was something Chrysler added to the engine around 73/74, or maybe it was something Jensen did? Never saw the bracket on any Chrysler from 1970 or earlier, but it was present on both my 73 and 74 Jensens. On Fri, Apr 7, 2023 at 6:45 PM 'James Douglas' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:
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