Pulley belt contact area - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skip99 · 02-22-2020, 09:32 PM

Deleted

**kwmech** · 02-22-2020, 10:13 PM

First thing I would do is put the PS pulley on all the way. Power steering has its own belt and adjustment. What year is this going in? Long water pump should have the alt on the other side with the AC where the alt is now. OR convert everything to a short water pump

skip99 · 02-22-2020, 10:44 PM

Pulley is not on because just mocking up,

I guess ill get a three groove crank and a two groove ps pulley, question...i see two types of crank pulley ,one is all three the same size, the other is the back two grooves are smaller, which is correct? The front would drive crank ,wp, to ac, The middle would be crank, wp, alt , the back would be ps pump.

**kwmech** · 02-23-2020, 12:50 PM

Can't mock it it correctly with everything askew.

**The Rocknrod** · 02-23-2020, 01:44 PM

Almost any system, brackets, suspension etc. work and fit better using the same companies parts throughout. I'm saying this because I'm not so sure that PS bracket is designed to work with the Alan Grove (type) brackets or vice versa. I could be mistaken.

skip99 · 02-23-2020, 04:46 PM

Quote:

Originally Posted by kwmech

Can't mock it it correctly with everything askew.

Yes, i can...i didnt press the ps pulley on because i figured i might have to swap it.

skip99 · 02-23-2020, 04:48 PM

Quote:

Originally Posted by The Rocknrod

Almost any system, brackets, suspension etc. work and fit better using the same companies parts throughout. I'm saying this because I'm not so sure that PS bracket is designed to work with the Alan Grove (type) brackets or vice versa. I could be mistaken.

The alan groves bracket is designed to work with the original ps mount,

Rick Bollinger · 02-23-2020, 10:06 PM

I guess I am with kwmech on the pully not being bottomed out thing. My way of thinking is everything where its suppose to be to check alignment. That pulley could be off as much as a 1/2 inch. But then again I am a kind of hands on no instruction kind of guy. If you can do it that way and get it right that's great just that I couldn't.

Dead Parrot · 02-23-2020, 10:37 PM

Don't think the AC+PS pulley setup was ever designed to provide the primary power to the PS pump. On my AC equipped 350, the single AC belt barely touches the PS pulley, much like yours. The main PS belt goes around the water pump, main pulley, and PS pulley. The PS pulley is a double belt pulley. My AC is in the same place as you are putting your Alt.

skip99 · 02-23-2020, 10:51 PM

Quote:

Originally Posted by Dead Parrot

Don't think the AC+PS pulley setup was ever designed to provide the primary power to the PS pump. On my AC equipped 350, the single AC belt barely touches the PS pulley, much like yours. The main PS belt goes around the water pump, main pulley, and PS pulley. The PS pulley is a double belt pulley. My AC is in the same place as you are putting your Alt.

Thanks, just need to figure out which crank 3 groove to get, that and a two groove ps pulley will fix issues

skip99 · 02-23-2020, 10:53 PM

Quote:

Originally Posted by Rick Bollinger

I guess I am with kwmech on the pully not being bottomed out thing. My way of thinking is everything where its suppose to be to check alignment. That pulley could be off as much as a 1/2 inch. But then again I am a kind of hands on no instruction kind of guy. If you can do it that way and get it right that's great just that I couldn't.

Ok, guys, the pulley was fully seated, i removed it and got a new ps pump, so its not pressed back on yet, i just set it there for pics, THAT IS NOT THE ISSUE OR THE QUESTION..

Warrens69GMC · 02-23-2020, 10:56 PM

Think of this. GM used on some applications (cadillac?) a two groove pulley for the crankshaft (WP,Alt, and crank) and a two groove pulley on the PS pump and ALT, and had a short belt to go from ALT to PS pump.

Here's a image of what i'm saying

You just use 2 grooves though.

Dead Parrot · 02-24-2020, 12:18 PM

Quote:

Originally Posted by skip99

Thanks, just need to figure out which crank 3 groove to get, that and a two groove ps pulley will fix issues

I had a 68 Impala with 327 that had the AC on the passenger side, Alt on the drivers and PS. Don't remember if the Alt belt also touched the PS or was totally separate. If you can find engine bay pics of one, might be a place to start.

**Captainfab** · 02-24-2020, 10:58 PM

Part of the issue here is that you are using a long water pump and trying to configure your accessories like a short water pump is set up. If you want the AC on the passenger side and the alternator on the drivers side, a short water pump and all factory short water pump pulleys and brackets will accomplish what you want.

cadillac_al · 02-25-2020, 07:43 AM

I always wondered why GM put the AC compressor on the drivers side. It never made sense to me.

02-22-2020, 09:32 PM	#1
skip99 Registered User Join Date: Oct 2010 Location: mt vernon, oh Posts: 867	Pulley belt contact area Deleted __________________ Tami's 51 build http://67-72chevytrucks.com/vboard/s...d.php?t=428878 Last edited by skip99; 02-24-2020 at 12:37 AM.

02-22-2020, 10:13 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,388	Re: Pulley belt contact area First thing I would do is put the PS pulley on all the way. Power steering has its own belt and adjustment. What year is this going in? Long water pump should have the alt on the other side with the AC where the alt is now. OR convert everything to a short water pump

02-22-2020, 10:44 PM	#3
skip99 Registered User Join Date: Oct 2010 Location: mt vernon, oh Posts: 867	Re: Pulley belt contact area Pulley is not on because just mocking up, I guess ill get a three groove crank and a two groove ps pulley, question...i see two types of crank pulley ,one is all three the same size, the other is the back two grooves are smaller, which is correct? The front would drive crank ,wp, to ac, The middle would be crank, wp, alt , the back would be ps pump. __________________ Tami's 51 build http://67-72chevytrucks.com/vboard/s...d.php?t=428878 Last edited by skip99; 02-23-2020 at 10:42 AM.

02-23-2020, 12:50 PM	#4
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,388	Re: Pulley belt contact area Can't mock it it correctly with everything askew.

02-23-2020, 01:44 PM	#5
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Pulley belt contact area Almost any system, brackets, suspension etc. work and fit better using the same companies parts throughout. I'm saying this because I'm not so sure that PS bracket is designed to work with the Alan Grove (type) brackets or vice versa. I could be mistaken. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? Last edited by The Rocknrod; 02-23-2020 at 01:55 PM.

02-23-2020, 10:06 PM	#8
Rick Bollinger Registered User Join Date: Mar 2018 Location: Colchester IL Posts: 284	Re: Pulley belt contact area I guess I am with kwmech on the pully not being bottomed out thing. My way of thinking is everything where its suppose to be to check alignment. That pulley could be off as much as a 1/2 inch. But then again I am a kind of hands on no instruction kind of guy. If you can do it that way and get it right that's great just that I couldn't.

02-23-2020, 10:37 PM	#9
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,474	Re: Pulley belt contact area Don't think the AC+PS pulley setup was ever designed to provide the primary power to the PS pump. On my AC equipped 350, the single AC belt barely touches the PS pulley, much like yours. The main PS belt goes around the water pump, main pulley, and PS pulley. The PS pulley is a double belt pulley. My AC is in the same place as you are putting your Alt.

02-23-2020, 10:56 PM	#12
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,613	Re: Pulley belt contact area Think of this. GM used on some applications (cadillac?) a two groove pulley for the crankshaft (WP,Alt, and crank) and a two groove pulley on the PS pump and ALT, and had a short belt to go from ALT to PS pump. Here's a image of what i'm saying You just use 2 grooves though. Attached Images Last edited by Warrens69GMC; 02-23-2020 at 11:10 PM.

02-24-2020, 10:58 PM	#14
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: Pulley belt contact area Part of the issue here is that you are using a long water pump and trying to configure your accessories like a short water pump is set up. If you want the AC on the passenger side and the alternator on the drivers side, a short water pump and all factory short water pump pulleys and brackets will accomplish what you want. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

02-25-2020, 07:43 AM	#15
cadillac_al Registered User Join Date: Oct 2013 Location: Maine Posts: 2,334	Re: Pulley belt contact area I always wondered why GM put the AC compressor on the drivers side. It never made sense to me. __________________ 76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10



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