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Old 05-20-2012, 09:21 PM   #1
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Under drive pulleys?

Found a set of 3 blue anodized summit racing 25% under drive pulleys for my 2000 gt. I have the Pi swap, CAI catless h pipe with 2.5 Mac exhaust. Are they worth 75$ and do they TRULY do anything
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Old 05-21-2012, 01:40 AM   #2
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Re: Under drive pulleys?

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Originally Posted by GrabbinGEARZ View Post
Found a set of 3 blue anodized summit racing 25% under drive pulleys for my 2000 gt. I have the Pi swap, CAI catless h pipe with 2.5 Mac exhaust. Are they worth 75$ and do they TRULY do anything
They do free up H/p and I noticed a slight difference when I put them on, as far as worth it I would say for 75 they are but mine were a little more. Just make sure crank pully has the harmonic balancer on it and isnt the piggy back one like bbk makes. I used steeda because it actually replaces the crank instead of using the stock crank mounted to the front of the underdrive pulley.

I have read mixed reviews on this subject some say they give you more h/p and is worth the money and some say its not. IMO, every mustang I have owned they are the 2nd thing i do because it will all fall in play when you do other things to the car.
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Old 05-21-2012, 12:53 PM   #3
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Thanks bud
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Old 05-21-2012, 01:03 PM   #4
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Re: Under drive pulleys?

anytime
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Old 05-21-2012, 01:20 PM   #5
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Quote:
Originally Posted by southernstang00

They do free up H/p and I noticed a slight difference when I put them on, as far as worth it I would say for 75 they are but mine were a little more. Just make sure crank pully has the harmonic balancer on it and isnt the piggy back one like bbk makes. I used steeda because it actually replaces the crank instead of using the stock crank mounted to the front of the underdrive pulley.

I have read mixed reviews on this subject some say they give you more h/p and is worth the money and some say its not. IMO, every mustang I have owned they are the 2nd thing i do because it will all fall in play when you do other things to the car.
X10000

Do not get the piggy back ones!!

I have Steeda as well just gotta get it on.
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Old 05-21-2012, 07:18 PM   #6
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Well good news. I texted the guy who sold it to me to make sure they were ok and he said piss on them he had billet Aluminum ones and gave them to me for free. Now I just gotta get them on
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Old 05-21-2012, 08:14 PM   #7
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Let us know if you feel a performance change after you install them
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Old 05-21-2012, 08:34 PM   #8
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... A PI swap on a 2000?
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Old 05-21-2012, 08:42 PM   #9
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What makes the piggy back ones bad?
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Old 05-21-2012, 08:58 PM   #10
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Why ask about a pi swap on a 2000?

---------- Post added at 08:58 PM ---------- Previous post was at 08:54 PM ----------

Quote:
Originally Posted by tommy d
Let us know if you feel a performance change after you install them
I deffintaly will.
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Old 05-21-2012, 09:03 PM   #11
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Quote:
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Why ask about a pi swap on a 2000?
Because 99+ is PI from the factory. Was your car a v6 or something?
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Old 05-21-2012, 09:55 PM   #12
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Quote:
Originally Posted by AgentOrange

Because 99+ is PI from the factory. Was your car a v6 or something?
Oh oh. No I mentioned pi swap cuz I don't know they came factory. And the original owner told me to look for parts for the pi swap engine. I do have aftermarket heads though. Running 11:1 compression. Thanks for info though.
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Old 05-21-2012, 10:20 PM   #13
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Quote:
Originally Posted by 03GT88
What makes the piggy back ones bad?
They Can harm your engine if they come loose or are not installed properly. Have 100 times the chance to f your engine up with them. Save the risk and spend the money to get the ones that have a real harmonic balancer with them.
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Old 05-22-2012, 09:16 AM   #14
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Re: Under drive pulleys?

N/A every little bit counts. Often UDPs cause a little loss in power such as dimmer lights etc, or on our (05+) cars, slow the water pump often causing over heating that is easily remedied with a tuner by turning the fan on sooner.

I don't know if the 2V has the same issue, but just look into it to make sure.
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Old 05-22-2012, 01:53 PM   #15
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Re: Under drive pulleys?

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N/A every little bit counts. Often UDPs cause a little loss in power such as dimmer lights etc, or on our (05+) cars, slow the water pump often causing over heating that is easily remedied with a tuner by turning the fan on sooner.

I don't know if the 2V has the same issue, but just look into it to make sure.
Far as it messing with your lights and cooling I noticed it on my fox body and when I used the bbk underdrive pullies. When the Steeda ones I didnt notice the dimming or anything with the charging but far as cooling it did run like 5-10 degrees warmer but I fixed that with a 160-180 degree thermostat by hypertech and the tuner.
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