Question about 2012 Honda Accord - Coupe, 3.5L V6 - Pro-Kit Lowering Springs

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"Underdrive Pulley" Hello, I am thinking about putting on a "under drive pulley" on my 2012 V6 Accord Coupe, to gain a few more horsepower. It is of course smaller, and made out of Aluminum. And will need a new belt. Any Pros or Cons for doing this? Thank You so very much.

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The pros to doing this are that it is an easy way to gain a little power, the cons are that whatever you put them on are now running slower than they were so they will not be as efficient as they were. The alternator won't charge as well, the power steering system won't have as much assist, etc. Some might be more noticeable than others. If you have a stereo system in the car with amps and subs, it would definitely be a drain on the charging system but if there aren't any accessories installed like that, it shouldn't be a large change. I'd go for it since it's an easy reversal if you don't like it.

Posted on Dec 27, 2013

Testimonial: "Many Thanks "forddoc94," no big stereo, have LED fog lights, turn signals front and rear, backup lights, interior. And my car is an Automatic. Can also go with LED's on my side markers too. Oh and my rear lights have LED's in there also. I also assume that the AC would also take a hit somewhat. I live in Iowa, and the humidity does get high also. My Honda Dealer was adamantly against putting it on, "what if your water pump goes out, what if you need to change your Timing belt." All kinds of "what if's." My comment back was "What if your Aunt had Nuts, then he would be your Aunt." :) They also brought out a 5 foot breaker bar they said they use to remove the nut on the pulley. I didn't understand that, unless it would crack while installing. Plus I found a Federal Law that protects us "upgrader's" that says if something goes wrong with your vehicle, the Dealer has to prove that the after market item caused a failure relating to an after market part. I can't think of it off hand, but will look for it. Thank You very much for your answer, as the pulley has been in a box since June of 2012. Have a wonderful New Year. johne"

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All information contained here and on subsequent pages are subject to the myFordFocus.com Terms of Use Policy, which basically states that myFordFocus.com IS NOT responsible for anything you do to your car... Please read it! :)
Focus Sport Underdrive Crank Pulley Installation This How-To Library article is for the FocusSport crank pulley, which as indicated on the FocusSport product information page, includes a 6061 aluminum lightweight crank underdrive pulley and a new Goodyear Gatorback accessory belt. The FocusSport crank pulley underdrives your accessories by 23%. This, in turn, decreases the drag on the engine, unleashing power that you never knew you had. And since the FocusSport (7.6 ounces) crank underdrive pulley is lighter than OEM (3 lbs. 4 ounces) crank pulley, you'll benefit from the weight reduction of rotating mass; resulting in a more responsive engine. FocusSport crank underdrive pulleys come in a red anodized finish. (Product description taken directly from the FocusSport product page...) Compliments of myFordFocus.com Forum Member: jaymzr74 Time to Complete: .5 - 1 hour Tools Required:
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Instructions: (Click images to Enlarge)
car-raised-small.jpg Note: It helps to have the car on a lift before you begin, though not too high up, as you'll need to get at teh top of the engine bay under the hood. If you don't have access to a lift, use a 2 ton jack stand.
splashguard-small.jpg
  1. Remove the plastic splash guard inside the right front fender well.
    • There are two 10mm bolts holding it to the fender.
    • After removing the bolts, it should pop right out.

    wheel-removed-small.jpg
  2. Remove right front wheel.
    bolt-removed-small.jpg
  3. Remove the bolt on the crank pulley
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    • This bolt is a regular right-hand thread.

    torgue-small.jpg
  4. Install the new pulley on the crank.
    • There is a keyway on the crank that the pulley must fit over.
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    installed-small.jpg
  5. Torque the bolt to 85-91 lb-ft.
    • This is tricky if you don't have an impact, so try to find one.

    belt-small.jpg
  6. Relieve the belt tensioner and route the new belt over the pulley and accessories.
  7. Reinstall the plastic splash guard.
  8. Put your front wheel back on.

Supporting Belt Diagrams Zetec with A/C
zetec-withac-ad.gif Zetec withOUT A/C
zetec-withoutac-ad.gif

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1 Answer

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I think this is right, but…
Find someone to help you if you can. To help hold the new belt in place when you are putting it on.
Make a diagram of the way the belt fits over and around the pulleys on your car. Don’t thing that you are going to remember where it goes.
Locate the drive belt auto-tensioner on the upper part of the engine (see pic). The tensioner is an idler pulley, since it does not drive any accessory on your vehicle. Its only function is to give the belt its proper tension.
Insert a long boxed-end wrench on the auto-tensioner pulley bolt of the appropriate size (probably 14mm) and slowly turn the idler pulley to release the tension on the drive belt (you are not removing the bolt; you are turning the tensioner so you can get the belt off while you have it turned under pressure). If you have a 2.4L engine model (2.3 Vtec should be similar), turn the pulley clockwise; if you have a 3.0L engine model, turn the pulley counterclockwise. Slide the belt off any pulley located on the upper part of the engine while you have the tensioner under pressure; then slowly release the tensioner pulley and remove the belt from the engine.
Check every pulley run by the drive belt and make sure they are free of dirt, debris and built-up material.
Compare the old belt to the new one and make sure it is of the same width and configuration.
Install the new belt beginning with the crankshaft pulley at the bottom and center of the engine and work your way up to the last pulley; follow your notes or the routing diagram on the engine compartment. If necessary, ask your helper to hold the belt stretched next to the last pulley on the upper part of the engine. Using the boxed-end wrench, slowly rotate the auto-tensioner pulley in the same direction you turned it to release the belt. Then slide the belt over the last pulley, and slowly release the auto-tensioner.
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0ca960f.jpg

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1 Answer

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If you need more details, visit autozone.com (free register) and select your model vehicle.

I hope help you (remember rated this help) Good luck.

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See an example
DISASSEMBLY 1. Remove the suction pipe and the O-ring from the oil pump.
ad6db20.gif 2. Remove the rear cover with the gasket and pins. 3. Remove the cam ring. 4. Remove the rotor and vanes. 5. Remove the front side plate.
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47a7732.gif 8. Remove the pulley nut with the spring washer. 9. Pull off the pulley and the woodruff key.a12b5d7.gif 10. Remove the snap ring using snap ring pliers. 11. Drive out the pulley shaft with the bearing. If necessary, use plastic hammer

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