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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » Pulley size

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    8/09/2013 1:16 PM  #1

    wsinsle
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    From: Belle Vernon, PA
    Registered: 4/01/2013
    Posts: 1,753

    Pulley size

    I bought a new double crank shaft pulley to add power steering. Been playing around all day trying to line things up. Then I noticed my crank pulley and fan pulley were rubbing. I measured the pulleys and called the place where I bought the new one for the crank (this is a 3 hole by he way). My fan pulley is about 6 1/8". My crank is 6 3/4". When I called the place of purchase they measured a crank and said it was 6 1/4" but that was a single groove. When they measured a double grove it was 6 3/4". Should all crank pulleys be 6 1/4" and the pulley they sold is no good or is something else wrong. Thanks for any help!!!

    66 mustang 289 CI mostly stock 4 barell
     

    Last edited by wsinsle (8/09/2013 1:27 PM)

    If this forum can't fix it, it isn't broke.
     

    8/09/2013 1:42 PM  #2

    BobN
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    Registered: 4/03/2013
    Posts: 158

    Re: Pulley size

    I ran into a similar problem. I pulled a set of crank and waterpump pulleys from a lincoln 302 in the junk yard and when I came home I physically could not put them on my engine. The pulleys hit eachother and required another 1/4 inch so they would clear.

    It turns out that there are different waterpump designs as well as different timing covers. some of them move the waterpump in or out or the waterpump shaft up or down. I ended up getting a different water pump and everything lined up nicely.

    As far as your question on pulley size, the smaller pump pulley will over drive the water pump in relation to crank speed. Most factory setups will have the waterpump over driven to increase the coolant flow and fan speed when idle.

    BobN

     

    8/09/2013 1:53 PM  #3

    Greg B
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    Re: Pulley size

    There were lots of different size pulleys.  

    http://www.mustangtek.com/pulley/Pulley.html


    What are you looking for exactly?   I have a pile of pulleys Im definately not going to use.  

    If multiple things can go wrong, the one that will go wrong will be the one that causes the most damage.
     

    8/09/2013 2:41 PM  #4

    wsinsle
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    From: Belle Vernon, PA
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    Re: Pulley size

    Well Greg I got an education in pulleys. I guess Ford didn't use the KISS method. Any way the one I think I need had (C5AE-A) & (C5AE-6312-A). If you or anyone has one I would be happy to purchase it. Thanks for the help.

    If this forum can't fix it, it isn't broke.
       •Thread Starter
     

    8/09/2013 3:29 PM  #5

    Greg B
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    Re: Pulley size

    Here is what I dug off the top of the pile"


    The wp pulley is C5AE-8509B   The single crank pulley is C5AE-A  The double crank pulley is C9OE-6312 -E   As you can see, that pulley has been drilled for both 3 and 4 bolt harmonic balancer.  I did it myself around 20 years ago.   I had a car I went through 3 engines quick.  It is also pitted bad on the inside, but cleaned up on the outside its useable thats why I didnt toss it.  

    Last edited by Greg B (8/09/2013 3:32 PM)

    If multiple things can go wrong, the one that will go wrong will be the one that causes the most damage.
     

    8/09/2013 5:00 PM  #6

    wsinsle
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    From: Belle Vernon, PA
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    Re: Pulley size

    Forgive my stupidly, the part number I listed in the last post was for a single grove pulley, I want a double. Should of said C60E-6312A or C6TE-6A12D. Greg the double crank pulley you pictured should also work, if you want to part with it PM me, I would be happy to purchase it.

    If this forum can't fix it, it isn't broke.
       •Thread Starter
     

    8/09/2013 7:31 PM  #7

    Greg B
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    Re: Pulley size

    sure.  we will deal with the particulars tommorow. NP.

    I got to start letting go of some of my Ford/other collections sometime, or someday I will leave quite a mess for the kids to deal with   LOL.  

    If multiple things can go wrong, the one that will go wrong will be the one that causes the most damage.
     

    8/09/2013 7:45 PM  #8

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,491

    Re: Pulley size

    Normally the waterpump pulley is smaller than the crank to spin the pump and fan at faster-than-crank speed.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

     

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