[Striker169]

I converted my A/C to r134a in May. I replaced the Compressor, clutch, dryer, and Expansion Valve. It blows ice cold now, but the only issues that I am having are that the belt makes a LOT of noise, it’s a brand new gatorback belt it’s on there very tight but the long travel makes it wobble a lot... any ideas on how to solve this? It seems almost as if it just needs an idler pully by the PS pump or something...??

Secondly, I upgraded my intake and carb to Edelbrock intake and 4 barrel carb, now I got the throttle adapter for it (it doesn’t seem to fit right) below is a picture of how I have it setup but it doesn’t seem to look right... has anyone else done this upgrade and have a picture of how it is supposed to look? The kick down rod doesn’t seem to do anything and just falls off easily…

http://peoplesrevolt.com/upload/file...x/IMG_0802.JPG

[Striker169]

Anybody have an idea?

[fastbck65]

I can't really tell from the pic but, do you have an "e" ring clamp on the kickdown that holds it on the shaft? Also I noticed you are missing the kickdown adjustment screw. You need to find a bolt that will thread through that hole so you can adjust the kickdown. I'll try to take a picture of my setup and post it. It is on a Holley but it should help you, because I've got the Edelbrock adapter on it.

[fastbck65]

I have an extension on mine due to the Holley being lower. But the side picture shows the "e" clamp that should be used after you hook your kickdown bracket to the small shaft on the inside of the Edelbrock adapter.

The front picture shows the adjusment screw you are missing.

[Striker169]

Hmmm ok, I will try to find a screw that will fit that and work. Thanks!


Does anyone have any ideas about my A/C problem?

[Kebean]

With your A/C problem you are pretty much stuck, although, what is your engine idle speed? My '72 with a 351C and stock A/C used to idle at 750-800 and the belt rattled and sounded like crap. Lowered the idle speed, so now it idles at about 550 in gear and 500 in gear with the A/C on, and the belt rattle reduced significantly.

[silver69]

My compressor belt does not jump and i am also using the 134A kit, double check your freeon level too much can cause some of what you are seeing, also the ac on a 351c does have a tensioner/idler pulley right next to the compressor and in my application I modified and reinstalled it. because I felt it was needed.
You will need to make an adapter to bolt to your intake and then bolt your stock accelerator linkage to it. its not much but that 1/2" will cause you some trouble if you dont fix it right. you will not find a replacement for that cable or housing. You will also wear the baseplate on teh carb by pulling at an angle as depicted in your picture.

[Striker169]

Originally Posted by silver69

My compressor belt does not jump and i am also using the 134A kit, double check your freeon level too much can cause some of what you are seeing, also the ac on a 351c does have a tensioner/idler pulley right next to the compressor and in my application I modified and reinstalled it. because I felt it was needed.
You will need to make an adapter to bolt to your intake and then bolt your stock accelerator linkage to it. its not much but that 1/2" will cause you some trouble if you dont fix it right. you will not find a replacement for that cable or housing. You will also wear the baseplate on teh carb by pulling at an angle as depicted in your picture.

Ok I will check the freeon level, I am not sure if mine does have an idler to the right of the compressor, I will have to check.

Also any more info on an adapter? And what do yo umean it will wear the baseplate on the carb?

[Striker169]

I finally figured out how to upload a video, anyhow here is the noise I hear and I am afraid that it is the compressor going bad

YouTube - 1972 Ford Mustang A/C Problem

[steves72grande]

It sounds really quiet for it to be the compressor going out, but stranger things have happened...

Try the ol' screwdriver-is-a-stethoscope-trick: take a long flat blade screw driver and push the handle into your ear. Put the flat blade on the area you think the sound is coming from. That should narrow down the suspect.

It almost sounds like a light metallic sound, like maybe a worn bushing or a loose screw. With everything off, try to see if anything is loose. Good luck and keep us posted!

[Striker169]

I borrowed my friend’s automotive stethoscope but it all sounded the same.... I checked everything and it all seemed tight and I didn’t see/find any loose bolts or anything. I am wondering if it is the clutch is there any way to like see if it is either the compressor or the clutch?

[steves72grande]

Try removing the A/C belt and running the engine again. If it goes away, odds are it's the A/C. Then try removing the clutch and running it again (with belt, A/C on) and see if it's gone. Keep us posted.

[Striker169]

Originally Posted by steves72grande

Try removing the A/C belt and running the engine again. If it goes away, odds are it's the A/C. Then try removing the clutch and running it again (with belt, A/C on) and see if it's gone. Keep us posted.

It is definitely the A/C, but what do you mean try removing the clutch and running it again with belt A/C on? Without the clutch how would the belt connect to the compressor?

[steves72grande]

Sorry - my bad. Typing faster than I think.

Do you need to just replace the clutch assy or the whole compressor?

[Striker169]

Originally Posted by steves72grande

Sorry - my bad. Typing faster than I think.

Do you need to just replace the clutch assy or the whole compressor?

That is what I am not sure of... It sounds like it is coming from the compressor itself. I can’t seem to find anywhere here in Austin Tx that specializes in this kind of A/C either anyone have any recommendations?