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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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02-01-2016, 02:03 AM | #15 | |
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My mistake I read isotropic and my head just jumped to cryogenics. ( after research on cryogenics I found that it does not make metal brittle. )Yes shot peening and isotropics would help nasa seems to think it makes up to 30% stronger gears but I still think their needs more surface area to displace the energy. I just can't see a fix for the stock units unless more material is used. That's just my opinion believe me I would love to be proven wrong. Shoot I will even test a cryogenic, shot peened, and isotropic treated unit if given the chance. I will even supply a transmission if someone has access to these types of treatments. EDIT: I've decided to call around tomorrow to cryogenic, shot peeing and isotropic companies and will see the cost and if they believe it will help with the problems. IF so and people want to help I will send a trans out for treatment, bolt on the slicks and flat foot shift to see what happens...... Has anyone compared the size of a V160 4th gear to the one in this trans????
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02-01-2016, 04:34 AM | #16 | |
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02-01-2016, 04:53 AM | #17 | |
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02-01-2016, 04:53 AM | #18 | |
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02-01-2016, 11:51 AM | #19 |
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i never had a gear break right after a shift, only when the power came on after spooling up again. traction and power are a damn near instant death for these things lol. I have broken 3rd and 4th, but i was running limited power in 1-2 with boost by gear so im not sure how long they would last at full power and a dead hook off the line.
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02-01-2016, 12:08 PM | #20 |
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That person has a boat payment to make. Cryo, shot peen, and REM ISF only add a sliver of lifespan to a gearset, like a couple of percent at best. REM ISF will help a little with heat thanks to the reduction in friction at the gear tooth faces, but that's pretty minimal as well. These treatments are best utilized by people who are limited by classifications or rules in a racing series who can't swap transmissions for something stronger (without a points penalty or reclassification) and want to add that thin layer of insurance.
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02-01-2016, 12:14 PM | #21 | |||
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3rd and 4th physically look significantly less strong than 1st and 2nd. They are thinner and the gear profile is less thick. I have heard one guy kill 2nd, but that was due to driver error in his opinion... 500rwhp and bad wheel hop I think? Anyway, trying to get this back on topic, anyone have photos to share?!?!?! I want more carnage to look through . Side note: These transmissions are fairly easy to tear apart, rebuild, replace synchros, etc. Everything is readily available through Toyota and the synchros (for all 6) are sub $150 if you have connections with the parts guy. |
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02-01-2016, 12:19 PM | #22 | |
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When people say that they have broken gears due to harsh shifting, they were likely close to stripping the teeth mid-pull anyway. And they need to learn how to shift smoothly |
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02-01-2016, 12:51 PM | #23 | |
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02-01-2016, 12:59 PM | #24 | |
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02-01-2016, 01:02 PM | #25 | |
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02-01-2016, 01:11 PM | #26 | |||
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One guy testing the unit local to me, after we test the gearset for a few thousand miles, wants to do REM ISF and Cryo for peace of mind. We will hopefully have some idea how much reduction in drag REM ISF adds as we are going to do back to back dyno . Quote:
We do have a spare gearset if you're interested in trying it out. The person who initially wanted to try it out backed out I think, can't get a hold of him. |
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02-01-2016, 01:42 PM | #27 |
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It would be useful to know how the cars with failed transmissions are being used (street, drag racing, AX, road racing).
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02-01-2016, 04:05 PM | #28 | |
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