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


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Old 10-29-2017, 04:55 AM   #29
ohmai18
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Originally Posted by nikitopo View Post
Yes in some older Subaru engines, if you were combing a lightweight driveshaft with a lightweight pulley you could get a CEL miss-fire code. It was known to happen if you were going lower than a specific weight. It wasn't known if there was an actual miss-fire or just the ECU was throwing a code. I've not heard something similar in our engines.


A final remark concerning different lightweight pulley kits. There are some cheap ones and some quite expensive. The difference is not related with the marketing department of each company, but the used material. You replace a steel pulley with an aluminum one and it is important to not have a failure. It is known that 7075 aluminum material is much better than the cheap aluminum, with a strength comparable to many steels. However, it is more expensive. So, you get what you pay ...
Which companies make pulleys out of 7075 aluminum for this platform?

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Old 10-29-2017, 05:26 AM   #30
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Which companies make pulleys out of 7075 aluminum for this platform?
I am aware that Beatrush of Laile (laile.co.jp) uses a 7075 grade.
http://www.beatrushusa.com/product-p/br.s96400pa.htm


Another brand is Toda Racing, but I place it second. I don't want to be blamed that I am sponsoring them.

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Old 10-29-2017, 08:11 AM   #31
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Speaking from my experience with the light weight pulley, light weight flywheel and light weight driveshaft. I had the T3 light weight pulley, TODA racing chromoly flywheel and 1piece carbon driveshaft on my AE86. I don't have number to prove but I can tell from the way the handles and accelerate that it have more power on the wheel than when I don't don't those installed. Yes, I also swapped to stock parts after installing them to see the difference and then back to the after market. I plan on getting the pulley and drive shaft for my frs.
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