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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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07-07-2017, 07:07 PM | #99 | |
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Sent from my E6653 using Tapatalk |
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07-07-2017, 07:13 PM | #100 |
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It made 20 whp over a bone stock FA20 with a similar torque curve shape to a tuned FBO FA20. Peak HP was achieved at 7200 rpm.
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07-07-2017, 07:27 PM | #101 | |
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Are you not unhappy because you picked the top stage 3 cams and only saw 20whp on a lowered CR engine? Without those cams we probably wouldn't see those NA gains, no? Won't bother more, but eager for your feedback on the supercharger Build, and wish you success. Sent from my E6653 using Tapatalk |
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07-08-2017, 02:06 AM | #102 | |
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07-08-2017, 10:45 AM | #103 |
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What compression ratio? The cams sound like a solid mod if you're making 20hp over stock with a lower compression. Looking forward to the FI results.
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09-22-2017, 02:07 PM | #104 |
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I have piper's rally cams in my FA20 making 800+whp, i dont really go on the forum anymore, so i havent shared a build thread, but more and more people are asking about it.... so maybe soon
[ame="https://www.youtube.com/watch?v=POhOJCehKS0"]https://www.youtube.com/watch?v=POhOJCehKS0[/ame] Last edited by SilverSkyline210; 09-22-2017 at 02:33 PM. |
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09-26-2017, 08:11 AM | #105 |
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Are there any more sources of information on engine builds with piper cams?
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09-26-2017, 10:17 AM | #106 |
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No, and I have not finished mine yet. I will publish information if I ever finish. Unlike the rest of the world
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09-26-2017, 05:51 PM | #107 | |
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The engine needed a tear down for other reasons so I may be able to provide some readout when it is assembled again. The cam control issue is resolved so I will have full control of the cams.
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09-26-2017, 06:01 PM | #108 | |
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09-26-2017, 08:44 PM | #109 | |
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Thanks for the reply on your progress! Looking forward to when you get the cam to play nice with the motor. |
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09-27-2017, 02:43 AM | #110 | |
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09-27-2017, 10:43 AM | #111 |
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I would assume it would give better results. Compression makes more power so I would assume a stock compression motor with the stg3 cams would make more power than a low CR one. I could be wrong but assuming the low CR was around a 9.5:1 or 10:1 it would take quite a bit of power out of the FA20 with keeping it NA so having it make close to stock levels with the cam control malfunctioning sounds promising for the cams as a power adder for a NA build.
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09-27-2017, 08:59 PM | #112 |
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@CSG Mike Of the NA engines CSG has delivered, have any been focused on an NA build with more aggressive camshafts? If so, how did they change the torque characteristics after 7,000rpm and do you see any bottlenecks?
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