Vintage Air... Compressor Noise

[Fan2zee]

On my 68', only when I turn on the A/C the compressor starts squealing.

After quickly evaluating it, it appears that the belt is slipping on the compressor which is causing the squeal. I did the normal thumb-tension test on the belt, which is approx. 3/8" of movement.

I've attached a picture of the setup..

How tight is to tight to on a belt?

[leddzepp]

Belt might be a little loose...or clutch could be going out. When this happened to mine, it was the clutch.

[matthufham]

i have vintage air and just got it working this week. mine squeeled, and my bracket for the headers caused the compressor to be at an angle and it would squeal and the belt would slip off, i fixed the bracket which was a little bent and it stopped squealing. the compressor is still about 1/4 inch far back though

[Hair]

While we're are on the subject of vintage air, how good do they work? I mean do they work good? I like it COOOOOOLD especially if I spend $1000 on an A/C system. Will they run you out of the truck in the dead of summer?

[leddzepp]

My dad's friend is a Vintage Air dealer. He put one in his truck and it blows 34 degree air...2 degrees above freezing. He lives in Lake Havasu City, Az, with 125 degree summers and no problems.

[matthufham]

update. now that i drove it with the correctly straightened bracket its still too far back, still squeals, still had the belt slip off. i'm gonna have to space the compressor foward.

got a 350 with headers and short water pump. bought the correct brackets from vintage air.

maybe i need a different belt?




the system blows 35 degrees and the fan works great

[acl]

Is this compressor new. has the freon and oil completely circulated thru? try belt dressing before changing belt. gary

[Fan2zee]

Originally Posted by Hair

While we're are on the subject of vintage air, how good do they work? I mean do they work good? I like it COOOOOOLD especially if I spend $1000 on an A/C system. Will they run you out of the truck in the dead of summer?

It works good. It's not as good as today's vehicle. But by far, I don't have to keep it wide open on "high" even on a 96 degree/100% humidity day, once the cab is cool.

I've had the system since 1999 and this has been my first minor issue.

[Fan2zee]

Originally Posted by matthufham

i have vintage air and just got it working this week. mine squeeled, and my bracket for the headers caused the compressor to be at an angle and it would squeal and the belt would slip off, i fixed the bracket which was a little bent and it stopped squealing. the compressor is still about 1/4 inch far back though

My exhaust bracket was 1/4" to far forward. Which made it easier for me to grind off the 1/4" off the front off and add one 1/4" back spacer for the header bracket. And had to take off 1/4" off the spacer for the engine bracket. Unlike you will have to add a 1/4" to the front and take off the 1/4" from the back. Even with spacers and some grinding are you sure you have to buy new brackets? I can post pics of my modification to show you if need...

[matthufham]

Originally Posted by acl

Is this compressor new. has the freon and oil completely circulated thru? try belt dressing before changing belt. gary

it came shipped filled with oil and warned not to add oil. i actually took my truck to a mechanic to do a leak test because i overlooked a fitting on the evaporator and he found it in a second, and then filled the system with r134.

the first belt i bought which was too long was a skinny, softer belt, and the one i have now is bigger and harder. the small one never squealed or slipped off, but it was too long. are there different kinds of v belts?


and fan2zee, thanks for the insides on your bracket, i don't need pics though. i have alot of metal fab skills, and i'll get-r-done. thanks