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  1. #1
    Member Ashwin
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    Default Crank Pulley Installation

    Written By: Nissan Performance Magazine

    1. Jack up the front of the car and secure it on Jack stands. Remove the front right tire and the splash guard. At this point you should be able to see the OEM pulley as pictured to the right.



    2. Get under the car. With a 14 mm wrench on the tensioner bolt release the tension on the serpentine belt and remove the belt.



    3. After the belt is removed lock the tensioner in the loose mode by inserting a drill bit into two parallel holes, one on the tensioner and one on the engine block. The picture to the right shows you how to do this.



    4. There are two methods to complete the next step. The easiest method is to use an electric impact gun to loosen (do not remove) the crankshaft pulley bolt as shown. If you do not have an impact gun, have a friend sit in the, car put the car in 5th gear, and step on the brakes while you loosen the crankshaft pulley bolt.



    5. For this step you will need a pulley puller. It is very hard to remove the stock pulley without one. Our pulley puller had three hooks that attached to the edges of the crank pulley and a screw type pointy bolt that was centered on the loose crankshaft pulley bolt. With a 15 mm wrench we tightened the screw type bolt down until the pulley popped out. We then removed the loose crankshaft pulley bolt and removed the OEM pulley.



    6. After removing the stock pulley there will be some engine oil on the end of the crankshaft. Do not worry, that is very normal. Simply clean the oil and proceed to install the UR pulley. Match the groove on the UR pulley to the indentation on the crankshaft. Gently tap the pulley in with a soft mallet. Do not use a hammer. Install the stock crankshaft pulley bolt and screw it in finger tight.

    7. To torque the pulley down we used these two steps:

    a) Wedge a ratchet extension through the one of the holes in the UR pulley and one of the grooves in the engine cover. This will prevent the crankshaft from moving. With a torque wrench tighten the crankshaft bolt to 30-34 ft-lbs of torque.



    b) The head of the crankshaft pulley bolt has six lines, each representing 60 degrees of rotation. Choose one of the lines then place a mark on the UR pulley at that line (red mark pictured). Then mark the line on the bolt (we used a red mark) 60 degrees counterclockwise away from the mark on the pulley. Now torque the pulley bolt until both red marks meet. We were not able to get the red marks to meet, so we got them as close to each other as possible.



    8. Re-install the serpentine belt. Release the tension on the tensioner by removing the drill bit from the holes. Put the splash guard back in place and install and torque the wheel. Congratulations, you have installed your UR pulley.

    Attached Images Attached Images         
    Last edited by MisterNuts; 03-19-2011 at 09:39 AM.

  2. #2
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    Default

    nice 1 ash....

  3. #3
    Newbie jwoo
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    Default

    How convenient! I was just about to do this very soon. What kinda pulley puller do I need to ask for?

  4. #4
    Senior Member Colton
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    I just tightened my new crank pulley with a torque wrench. just so everyone knows its 150 foot pounds of torque

  5. #5
    Newbie jp
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    why do u need to leave the tensioner on the release position? or can we just release the belt and let the tensioner go back to its place? just curious to know thanks for the instruction big help in installing my UR pulley just received it!!

  6. #6
    Newbie Steve
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    Any gains felt after the install?

  7. #7
    BDSF Karl
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    Quote Originally Posted by IspecOnyou View Post
    Any gains felt after the install?
    It's only 3-4whp gain max, so it's a bit hard to tell. Low rpm driving seemed to improve the most from what I remember.
    "Do you want to go fast or do you want to suck?" - Mike K.

  8. #8
    Senior Member Lucas
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    Should put this here:
    Crank Pulley options

    Black '03 - Supercharged.................StopTheFakes
    Yellow '04 - Runs on ground unicorn horn
    Red '02 - Because I'm crazy
    Blue '94 Miata - for the ladies
    Red '92 Miata - V8 for dayz
    Gray '07 Prius - Dat eco tho


  9. #9
    Newbie Steve
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    I have almost no balls from 1-2500 rpm's when i dd. Is that normal for a spec v or should i be shifting at 3k when just normal driving? A 3-4 whp gain is alot for just a pully im a honda guy and from what i can recall a pully didnt do shit by its self lol.

  10. #10
    Search Nazi Ottley
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    the peak tq comes in a little higher in the rpm band. did your honda have balls from 1000-2500?
    Jones & Wuk-Up

  11. #11
    Senior Member Dillon
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    youre right, a pulley doesnt do anything by itself. But by being lightweight, it's rotating mass is greatly reduced, taking a huge load off of the engine

  12. #12
    BDSF Karl
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    Quote Originally Posted by 02moltenV View Post
    youre right, a pulley doesnt do anything by itself. But by being lightweight, it's rotating mass is greatly reduced, taking a huge load off of the engine
    I'm not sure what you mean by this. It's been proven that a pulley will give 2-4whp throughout the entire rpm range, even on a stock motor.
    "Do you want to go fast or do you want to suck?" - Mike K.

  13. #13
    Senior Member Dillon
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    Quote Originally Posted by MisterNuts View Post
    I'm not sure what you mean by this. It's been proven that a pulley will give 2-4whp throughout the entire rpm range, even on a stock motor.
    think about it. how can a pulley the same exact size and shape give you power? By reducing the weight. Decreasing the mass decreased the work needed to spin the pully, therefore being able to get more of the engine's power elsewhere

    Same concept here http://www.b15u.com/b15-sentra-2000-...rs-wheels.html

    EDIT: Im agreeing Misternuts, just explaining why lol
    Last edited by 02moltenV; 04-27-2011 at 01:25 PM.

  14. #14
    BDSF Karl
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    Quote Originally Posted by 02moltenV View Post
    think about it. how can a pulley the same exact size and shape give you power? By reducing the weight. Decreasing the mass decreased the work needed to spin the pully, therefore being able to get more of the engine's power elsewhere

    EDIT: Im agreeing Misternuts, just explaining why lol
    Ahhh... gotcha
    "Do you want to go fast or do you want to suck?" - Mike K.

  15. #15
    Newbie Steve
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    Quote Originally Posted by Scrapin View Post
    the peak tq comes in a little higher in the rpm band. did your honda have balls from 1000-2500?
    Well i dont mean like omg 1k pwnge lol. HAHA MY GSR had some very good low end for how it was built. I had power from 2k up through every gear. the spec just seem life less till about 4k rpm. Im having to rip through 1-4 till about 3-3500 rpm to hang with traffic. Or maybe because the kid befor me put a loud as hell wake up the dead exhaust on it. That every time i get high in the gear it sounds like im at 6k rpm at 3k. Or maybe im being a vag and should just drive it till 3k and stfu lol!
    Last edited by IspecOnyou; 04-27-2011 at 02:37 PM.

  16. #16
    Senior Member Dillon
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    Quote Originally Posted by IspecOnyou View Post
    Or maybe im being a vag and should just drive it till 3k and stfu lol!
    agreed! i pull mine up to around 4 a lot becuase im always late for school and hit every damn red light haha going to 3 isnt gonna hurt it

  17. #17
    Senior Member Sebastian
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    i always shift a 3k, anything lower puts more strain on motor,mounts,and decrease mpg unless you plan on feathering the gas pedal lol

  18. #18
    Search Nazi Ottley
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    Quote Originally Posted by IspecOnyou View Post
    Well i dont mean like omg 1k pwnge lol. HAHA MY GSR had some very good low end for how it was built. I had power from 2k up through every gear. the spec just seem life less till about 4k rpm. Im having to rip through 1-4 till about 3-3500 rpm to hang with traffic. Or maybe because the kid befor me put a loud as hell wake up the dead exhaust on it. That every time i get high in the gear it sounds like im at 6k rpm at 3k. Or maybe im being a vag and should just drive it till 3k and stfu lol!
    i was just asking lol, i never drove a stick shift honda before. so i dunno. ive driven an auto 94 civic dx, thats it. yea it makes tq upstairs. well im vq but if i pull off from a light ill start spinning tires at about 5k
    Jones & Wuk-Up

  19. #19
    Senior Member Jason
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    is that the obx crank pulley ?

    Shift_Intimidation

  20. #20
    Newbie Steve
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    Quote Originally Posted by Scrapin View Post
    i was just asking lol, i never drove a stick shift honda before. so i dunno. ive driven an auto 94 civic dx, thats it. yea it makes tq upstairs. well im vq but if i pull off from a light ill start spinning tires at about 5k

    My buddy got a g35 sedan from his brother inlaw. He only owes 3k on it then he will own it. He took me for a ride in it and i was kinda shocked how beefy those vq's are. But he blew the head gasket and it is getting repoed and he only owe's 2k on it.

 

 
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