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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.

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Old 07-22-2012, 04:14 PM   #1
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Talking Lightweight pulley wow

Omg, hurry up and get one! I cant believe the difference in throttle response especially when your foot is completely off the pedal. Ive never bothered with mods like that before because i was skeptical.

So Please get rid of this


Replace it with that


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Old 07-22-2012, 04:29 PM   #2
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Mine should be here on Monday, I was worried at first as most of the cars I've had, pulleys have caused issues with the oil pump, but the OEM pulley doesn't seem to have any harmonic balancing.

It's like a cheaper lightweight flywheel!
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Old 07-22-2012, 04:37 PM   #3
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buying mine today when I get off work
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Old 07-22-2012, 04:44 PM   #4
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Will this void warranty and can a newbie do the work?
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Old 07-22-2012, 04:45 PM   #5
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i was kinda wondering about the void to

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Will this void warranty and can a newbie do the work?
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Old 07-22-2012, 04:46 PM   #6
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Garage
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Will this void warranty and can a newbie do the work?
They will use that as an excuse if something goes wrong later.
But if your chassis busts then your warranty will work because the pulley has No correlation to the actual chassis.
So all in all the dealer has to prove that the pulley is what broke whatever thing you're trying to get warranty on
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Old 07-22-2012, 04:50 PM   #7
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Took me 10 minutes to install. Release belt tension with a 14mm wrench on the tensionner. Make sure you have a long and strong breaker bar put the car in 6th gear with the handbrake on and thats it. The crank bolt is on reallytight so dont be shy!
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Old 07-22-2012, 04:50 PM   #8
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I was a bit skeptical about these but I keep reading rave reviews. I am going to put this on my list of early upgrades.

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Will this void warranty and can a newbie do the work?
Give this a read.
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Old 07-22-2012, 04:51 PM   #9
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i was kinda wondering about the void to
Should something happen, just put the origimal back on before you being thecar in for service.
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Old 07-22-2012, 04:55 PM   #10
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Should something happen, just put the origimal back on before you being thecar in for service.
+1, I will be putting the original back on each time that I have to take it in for the complimentary service
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Old 07-22-2012, 04:58 PM   #11
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Are the perrin units dampeners. It doesn't appear so?
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Old 07-22-2012, 04:59 PM   #12
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alright good because i already ordered one

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Should something happen, just put the origimal back on before you being thecar in for service.
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Old 07-22-2012, 05:03 PM   #13
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Quote:
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Should something happen, just put the origimal back on before you being thecar in for service.
and don't post in this thread when you do
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Old 07-22-2012, 05:05 PM   #14
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I'd want to reduce the weight at the back of the motor, too. Seems I won't have my warranty long...
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Old 07-22-2012, 05:10 PM   #15
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Quote:
Originally Posted by Silverdub View Post
Took me 10 minutes to install. Release belt tension with a 14mm wrench on the tensionner. Make sure you have a long and strong breaker bar put the car in 6th gear with the handbrake on and thats it. The crank bolt is on reallytight so dont be shy!
Sorry for the newbie question. Can u explain this in detail?
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Old 07-22-2012, 05:12 PM   #16
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Sorry for the newbie question. Can u explain this in detail?
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Old 07-22-2012, 05:15 PM   #17
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Hm. On second thoughts I don't think my pulley's getting changed-- those drill marks are balance marks...
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Old 07-22-2012, 05:18 PM   #18
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Quote:
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Sorry for the newbie question. Can u explain this in detail?
A long and strong breaker bar, is a long and strong breaker bar. Google the tool, it's important to have a good one if you work on cars. I've got a few of varying lengths and some different angles too.

If you have the car on the ground, in sixth gear, with the handbrake on tight, that will help to add resistance against the crank from the drivetrain at the -back- of the crank, meaning you can pop the nut more easily. If you have an AT, disregard this step. You're going to have to use a rattlegun (pneumatic wrench), and hope for the best.
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Old 07-22-2012, 05:38 PM   #19
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Quote:
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Hm. On second thoughts I don't think my pulley's getting changed-- those drill marks are balance marks...

OP can you check to see if there is any rubber in that OEM pulley? If it's all steel them it's not a balancer or damper and is totally fine to replace.
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Old 07-22-2012, 05:38 PM   #20
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you can see the rubber vibration dampener in the stock pulley, it's the ring between the rib section and the inner.

If you do change the crank pulley, ensure you torque the crank pulley bolt correctly. If the bolt isn't torqued correctly it can easily flog out the snout of the crank.
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Old 07-22-2012, 05:44 PM   #21
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I bought it because someone mentionned the original pulley wasnt a damper. I just looked at it and i confirm that it is. I know of a couple of people that have been running those for years without any issues. We will see. Any engineer can tell us about the downsides?
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Old 07-22-2012, 05:49 PM   #22
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Pic of original pulley and pen pointing at the rubber damper.

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