Visit The Dirt Forum for More Information

Author Topic:   AC compressor
ready to race
Dirt Roller

Total posts: 7
posted June 22, 2005 07:34 AM  
Looking to remove the AC compressor from my 91 chevy 350 (I think it was from a truck) and keep the serpentine setup with the reverse water pump deal. This thing is a beast, has to weigh 30+ pounds.

Has anyone run into this problem- is there a way to weld in an ideler pulley in the compressors place?

51racing
Dirt Maniac

Total posts: 138
posted June 22, 2005 07:46 AM  
I use that type of setup out of a '90 caprice, should be pretty similar.
I took the AC pump and the air pump off, and just measured and bought a belt that went around the alternator, the power steering, the crank, then the backside rides on the water pump like it should and the idler is just kind of out by itself and takes up the slack before it routes back to the alternator. I hope that makes sense, it does in my head because I'm used to seeing it.
Anyways, it's worked really well for me and this is my second season with it. I've spun it to about 6,700 and not rolled a belt off like v belts tend to. I have had one belt failure this year, but I don't think it was related to the setup, I stuck last years old belt back on and went and ran the feature without a problem.


ready to race
Dirt Roller

Total posts: 7
posted June 22, 2005 11:07 AM  
Thanks for the advice. Initially that sort of seemed like the easy way to do it but someone told me you cant. I could have a wierd setup or that person could have been mistaken. Ill have to take a look again, maybe run a tape measure around the pulleys without the real belt in and see what it looks like. Thanks.

Speedway65
Dirt Freak

Total posts: 344
posted June 22, 2005 11:59 AM  
Motormite makes a compressor bypass pulley that just bolts right in place of the ac unit part# is 34152 if that helps. http://www.motormitedormancatalog.com/item.wws?qty=1&mfr=MOTORMITE&sku=34152&price=&cookieID=1JS0V0E941JS0V0E93

51racing
Dirt Maniac

Total posts: 138
posted June 22, 2005 01:18 PM  
It does look sort of weird, but the tensioner does what it's supposed to do, provide tension, it just looks different. I'll see if I can find a picture and post it. I'm pretty sure they use the same setup on the pickups as I've worked on them too.
Like I said though, it works and stays on there up to 6,700, as high as I've ever revved mine.

51racing
Dirt Maniac

Total posts: 138
posted June 22, 2005 01:25 PM  

 
Here's a picture of the corner of it. You can see I just cut the ac bracket and the air pump too, and the tensioner is just sort of hanging there by itself.

    

Back to the Archives