Pulley Assemblies

[68rookie]

The guy working on my 390 engine told me we need to try and find some pulley assemblies. Looking for Tensioner Pulley Assembly and Idler Pulley Assembly. Can anyone give me some direction as to where I might find these things??? I've looked in Dennis Carpenter, LMC, NPD, and Mac's but don't see anything. Also wanting to convert my AC to R134 but have been told all A/C hoses need to be replace. Is this true and if so, where can I find those??

Thanks in advance.

[70_F100]

You shouldn't have to replace the hoses just for a conversion to R134. All of the hoses except one are made from either Nylaflow tubing or metal tubing, and neither of those cares what goes through them. All that needs to be done for a conversion is to replace the receiver-dehydrator, flush the system and change the oil in your compressor.

If you want to replace the hoses on a factory air setup, you'll never find identical replacements.

The high pressure line coming off my compressor went bad a couple of years ago. I spent two days looking for a shop that could just repair mine using the factory fittings, since they are factory bent.

There ARE shops around that can replace the hoses using your original fittings, but they are HARD TO FIND!!!

If you're anywhere near Greensboro, NC, I'll be glad to go back and get the information for the shop that did mine.

As for replacement pulleys, about the only ones you'll find will be used unless you happen to run across some on ebay.

[steveh]

with the idler pulleys you may be able to just replace the bearing or pulley bearing assemble, They still sell those... but the specialty flange and mounts are unique to the motor set up.

May get lucky with repo mustang parts.

Auto air of Oklahoma has the pulleys and bearings - google for a web site where the parts are listed. That is where I buy my ac parts.

Steve

[fordman]

those pulleys are non repairable. sorry steveh. great idea though. yo ucan do that to the newer serpetine belt pulleys. i have doen it. you use pilot bearing from a chevy to repair them. i have the part number somwhere if anyone needs it.

[cdeal28078]

Have tried any pull a part or junk yards for the pulleys? I have don't 2 R112 to R134 swaps just using the swap kits you see in the parts stores. It is not the perfect way to do it but the 1st swap lasted over 2 years until I sold the car and the last swap is still going after almost 3 years. Blows cold air every time I turn it on. I always heard to do it right you needed to change the washers also.
clint

[fordman]

the retrofit to r134a is just two adapters ont eh old valves. and then evacuate and refill with r134A

[ToughOldFord]

the retrofit to r134a is just two adapters ont eh old valves. and then evacuate and refill with r134A

That's all I've ever done, with pretty good success. I've read that it's a good idea to change out the receiver/drier, but I've never bothered so far.

[70_F100]

You should also change the compressor oil and flush the system, along with replacing the receiver-dehydrator. There is a certain amount of the refrigerant oil that circulates with the refrigerant. It is dispersed throughout the system, and there is a great deal of it contained in the receiver-dehydrator.

The oil used in R-12 systems is not compatible with R-134, plus some of the R-12 components are dissolved in the oil.

Good point about the O-rings, as mixing the oils will cause them to deteriorate.