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Belt routing/possible stupid question

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Old Jun 6, 2012 | 11:52 AM
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Default Belt routing/possible stupid question

Right now the way I have my belts routed and they are lining up is the following ,

1 belt goes around crank pulley,water pump pulley, Alt pulley.

1 belt goes around crank pulley,water pump pulley, p/s pulley.

My question is this bad routing, and would it cause the power steering to kinda bind ? I just installed a new p/s pump and I am not sure if I
Might still have air in the lines doing the binding, or if the p/s pump is supposed to be only on the crank pulley for a reason. I routed the belts this way incase one belt broke, I still would have a belt going around the water pump pulley.

opinions ?
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Old Jun 6, 2012 | 12:26 PM
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Assuming the engine and belt pulleys are stock, I would route the belts the way GM routed them.
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Old Jun 6, 2012 | 12:33 PM
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There's nothing wrong with the way you did it assuming both grooves on the WP pulley are the same diameter and both grooves on the crank pulley are the same diameter.
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Old Jun 6, 2012 | 01:05 PM
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Originally Posted by scrappy76
...opinions ?...
I agree with Jud. the assembly instruction manual (AIM) will have a page or two showing the correct factory belt routing and list part numbers for the correct belts.

No guesswork. No binding.
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Old Jun 6, 2012 | 01:05 PM
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assuming the wp & crank pulleys are the same, it may be more important that the alt & ps pulleys are the same diameter. If I got my physics correct
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Old Jun 6, 2012 | 01:07 PM
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Originally Posted by 79gilv
assuming the wp & crank pulleys are the same, it may be more important that the alt & ps pulleys are the same diameter. If I got my physics correct
Alt and ps puller size differences will not cause a problem
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Old Jun 6, 2012 | 01:11 PM
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Let's think about that, if the travel speed is the same around two pulleys (2X) but then differs around a third point, wouldn't that cause one to slip on the common pulleys while the other maintains full speed?
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Old Jun 6, 2012 | 01:12 PM
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Originally Posted by 79gilv
Let's think about that, if the travel speed is the same around two pulleys (2X) but then differs around a third point, wouldn't that cause one to slip while the other maintains full speed?
The alt and ps pulleys are not connected together.
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Old Jun 6, 2012 | 01:31 PM
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Jud and Easy Mike , The engine is not original, nor are the pulleys.

Also both grooves on the crank pulley and w/p pulley are the same diameter. I also do not think the size of the Alt pulley and p/s pulley wouldnt matter. I didnt think either there would be a problem doing this, just wanted to ask others what they thought. I tried to look up pics of belt routing and only could find pics of chevy v8s where the p/s pump belt only went around the crank pulley. So wasnt sure if it would cause conflict with the belt going around both crank and water pump.
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Old Jun 6, 2012 | 01:34 PM
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Did you happen to remove AC or something?
Non AC cars have a belt going from just the crank pulley to the water pump pulley. Pain to get that belt on as there is no adjustment.

Power steering belt should go just around the ps pulley and the third groove on the crank damper. Closest pulley to the radiator. The ps pulley on the damper is an added on pulley giving you a total of 3 grooves.
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Old Jun 6, 2012 | 01:43 PM
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Originally Posted by KapsSA
Did you happen to remove AC or something?
Non AC cars have a belt going from just the crank pulley to the water pump pulley. Pain to get that belt on as there is no adjustment.

Power steering belt should go just around the ps pulley and the third groove on the crank damper. Closest pulley to the radiator. The ps pulley on the damper is an added on pulley giving you a total of 3 grooves.
The motor is a 454. the pulleys are aftermarket matches for early bigblock motors ( 60's era ). the crank has two grooves. the water pump has two grooves. the inner groove of the crank pulley and water pump pulley line up perfect with the Alt, so I have one belt there. The p/s pump has a two groove pulley on it. The inner groove of the p/s pump pulley lines up perfect with the outer groove of the crank pulley and water pump pulley, so I have one belt there.
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Old Jun 6, 2012 | 01:47 PM
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Originally Posted by bashcraft
The alt and ps pulleys are not connected together.
On further thought, I stand corrected. There is nothing forcing the speed around the "third" pulleys to stay the same.
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Old Jun 6, 2012 | 01:54 PM
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Originally Posted by 79gilv
On further thought, I stand corrected. There is nothing forcing the speed around the "third" pulleys to stay the same.
Exactly.
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Old Jun 6, 2012 | 01:56 PM
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Originally Posted by scrappy76
The motor is a 454.
In that case I got nothin!
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Old Jun 6, 2012 | 02:04 PM
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Originally Posted by KapsSA
In that case I got nothin!
lol.

Fyi though, it wouldnt matter if it was a small block or a big block.

Last edited by scrappy76; Jun 6, 2012 at 02:06 PM. Reason: add
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Old Jun 7, 2012 | 10:13 AM
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Originally Posted by KapsSA
Did you happen to remove AC or something?
Non AC cars have a belt going from just the crank pulley to the water pump pulley. Pain to get that belt on as there is no adjustment.

Power steering belt should go just around the ps pulley and the third groove on the crank damper. Closest pulley to the radiator. The ps pulley on the damper is an added on pulley giving you a total of 3 grooves.
The power steering pump does have an adjustment. Here are some videos to show where it is.






Last edited by my 76 ray; Jun 7, 2012 at 11:29 AM.
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Old Jun 7, 2012 | 12:09 PM
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Originally Posted by my 76 ray
The power steering pump does have an adjustment. Here are some videos to show where it is.





I think you are confused about what he was talking about. He was saying a belt goes around the crank and water pump with no adjustment. Not the p/s pump.
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Old Jun 7, 2012 | 12:20 PM
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Originally Posted by scrappy76
I think you are confused about what he was talking about. He was saying a belt goes around the crank and water pump with no adjustment. Not the p/s pump.
There is an adjustment for that belt, but at this point it doesn't matter.
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Old Jun 7, 2012 | 02:39 PM
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Originally Posted by bashcraft
There is an adjustment for that belt, but at this point it doesn't matter.
You are correct, just didnt want to go into detail. Kinda getting off the beaten path of why I posted this.
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Old Jun 7, 2012 | 02:39 PM
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Originally Posted by bashcraft
There is an adjustment for that belt, but at this point it doesn't matter.
Water pump to damper?
Not on a 76 small block.
It took a while to find out we're talking about a transplanted big block!
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