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


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Old 04-24-2013, 05:49 PM   #1
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Raceseng | Billet Aluminum Engine Pulleys

In the process of developing and testing our very own engine pulleys.

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Old 04-25-2013, 08:24 AM   #2
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I like the design nice machining.

Are you testing them with a higher rev limit?
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Old 04-25-2013, 09:19 AM   #3
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Looking good what's the weight?
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Old 04-25-2013, 03:29 PM   #4
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Just an FYI

I had a pulley with a spoked design on my car for a few months. After a while I realized it was collecting dirt in the apex of the spokes, which seemed to unbalance the engine. I could feel it running rougher and was getting a burnt oil smell after high rpm use. I went back to stock and everything is back to normal. The installation was done correctly, there was no wobble, the key and o-ring were seated properly.

I don't know if my experience was a singular event, I haven't heard of anyone else having this issue.
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Old 04-25-2013, 09:28 PM   #5
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I like the design nice machining.

Are you testing them with a higher rev limit?
Yes, I will be testing them to 8,100



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Old 04-29-2013, 06:18 PM   #6
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I like the design nice machining.

Are you testing them with a higher rev limit?
Thanks Markitect! We have a couple sets prototyped and our cars for testing. Simmons is using them on his AutoX car.
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Old 04-29-2013, 06:21 PM   #7
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Just an FYI

I had a pulley with a spoked design on my car for a few months. After a while I realized it was collecting dirt in the apex of the spokes, which seemed to unbalance the engine. I could feel it running rougher and was getting a burnt oil smell after high rpm use. I went back to stock and everything is back to normal. The installation was done correctly, there was no wobble, the key and o-ring were seated properly.

I don't know if my experience was a singular event, I haven't heard of anyone else having this issue.
Calum - That is really odd because you would think that the dirt would collect equally in between the spokes. I have never heard of this happening. The only thing I can think of is that the pulley might have been out of balance from the get go.
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Old 04-29-2013, 06:25 PM   #8
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Originally Posted by Calum View Post
Just an FYI

I had a pulley with a spoked design on my car for a few months. After a while I realized it was collecting dirt in the apex of the spokes, which seemed to unbalance the engine. I could feel it running rougher and was getting a burnt oil smell after high rpm use. I went back to stock and everything is back to normal. The installation was done correctly, there was no wobble, the key and o-ring were seated properly.

I don't know if my experience was a singular event, I haven't heard of anyone else having this issue.
Kartboy's is $95 USD and closed face.
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Old 04-29-2013, 07:27 PM   #9
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Calum - That is really odd because you would think that the dirt would collect equally in between the spokes. I have never heard of this happening. The only thing I can think of is that the pulley might have been out of balance from the get go.
I checked and re-checked but it was running true. It seemed odd to me to which is why I didn't think about the pulley right off. I'm still not 100% convinced because of how odd it is, but the dirt was there and the problem is gone.

I haven't heard of anyone else, on any model of car, having this issue so I'm 99.99% sure yours will be fine aswell. I only mentioned it because you seem to still be in an R&D phase and this might be something you'd like to test before going to market. I certainly wont be criticizing if you find it's not a worry.
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Old 04-29-2013, 10:54 PM   #10
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While i do love having our parts plugged, I do not condone posting on other companies Threads unless we are asked a direct question.

As a CNC machinist i have to say that pulley looks pretty kickass. I've always wondered if a design like that would whistle. Only one way to find out.
Keep up the good work.

Tom
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Old 04-30-2013, 12:12 AM   #11
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Any idea on the weight of these pulleys?
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Old 04-30-2013, 03:36 AM   #12
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Looks sick, in for weight as well
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Old 04-30-2013, 07:02 AM   #13
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Any idea on the weight of these pulleys?







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Old 04-30-2013, 08:40 AM   #14
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Those are awesome!
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