64Rivvy Posted January 15, 2021 Share Posted January 15, 2021 (edited) Sorry if this is a stupid question guys. I'm about to send my ac compressor out to be rebuilt. Can I run a smaller/different accessory belt to still spin the alternator/generator while the compressor is out of the car. Would like to still be able to run and at least move the car around. Assuming the rebuild will take a month or two to get back. Car is a 64 with stock ac, stock pulleys, belts. Thanks. Edited January 15, 2021 by 64Rivvy (see edit history) Link to comment Share on other sites More sharing options...
RivNut Posted January 16, 2021 Share Posted January 16, 2021 (edited) Sure. Buick used the two belt system to increase the belt to pulley surface area. Many other makes use separate belts for alternator and a/c compressor. See if you can find a picture of a non a/c car. I think you'll see only a single belt driving the alternator. Here's a picture of a nailhead running a single belt for the alternator. Edited January 16, 2021 by RivNut (see edit history) Link to comment Share on other sites More sharing options...
telriv Posted January 16, 2021 Share Posted January 16, 2021 I just did this for a '65 Riv. GS I rebuilt the 425 engine for. I put EVERY ONE on a start cart to check to make sure EVERYTHING Is OK BEFORE the customer comes to check t out. Of course the vehicle has A/C, BUT of course there's no A/C compresser. The belt I ended up using was a 3/8ths. wide belt by 54" long. Was able to get good adjustment out of it to run the water pump. Wasn't worried about the fan blade as I use an electric Volvo fan so the fan blade is NOT nec. to run the water pump. ALSO it's safer for my hands & other body parts when setting timing etc. Tom T. 1 Link to comment Share on other sites More sharing options...
RivNut Posted January 16, 2021 Share Posted January 16, 2021 One thing that hasn't been mentioned that is in your favor, if you haven't already noticed, is that the belt tension adjustment is in the alternator bracket. Not having an a/c compressor is not a problem. Link to comment Share on other sites More sharing options...
64Rivvy Posted January 16, 2021 Author Share Posted January 16, 2021 Thanks. Will measure and see if I can find one the right length. Thanks for the note on the adjuster on the alternator. Ive seen one on the power steering pump to that looks adjustable but didn't know there was one on alternator bracket also. Link to comment Share on other sites More sharing options...
telriv Posted January 16, 2021 Share Posted January 16, 2021 I KNOW that size belt works as I just installed it like I mentioned. Tom T. Link to comment Share on other sites More sharing options...
64Rivvy Posted January 16, 2021 Author Share Posted January 16, 2021 Tom T, Ok perfect. I am running the fan blade/clutch fan so I wasn't sure if that would require a different measurement. I just went and double checked the routing so should work. I will grab that size. Thank you. Link to comment Share on other sites More sharing options...
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