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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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08-01-2022, 11:53 AM | #15 | |
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08-02-2022, 11:35 AM | #16 |
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Thanks for reaching out, yes it is the CUSCO ring and pinion at 4.556. So if I understood you correctly, we cant balance the shaft to fix the vibrations at acceleration? Also the shim part, will that cause it to fail, or I need to shim it further to prevent early failure for the diff? I appreciate your time, I cant find anyone in TX that has any knowledge on this.
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08-02-2022, 11:40 AM | #17 | |
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They won't flatout replace it for you, but will work with you on a replacement. Edit: The 3.5" shaft won't clear the stock shifter extension. Need to measure under the car to see if it will fit.
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08-02-2022, 05:04 PM | #18 | |
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08-02-2022, 05:10 PM | #19 |
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For me, the car drives smoother with sudden inputs and after harsh shifts with boost as a part of the recipe. The Verus carbon fiber driveshaft was a nice upgrade and I think it'll help reduce shock through the diff and transmission.
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08-02-2022, 05:16 PM | #20 | |
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The aluminum DSS shaft is cheaper then stock and 1/3 the weight. Price alone convinced me to buy this 5ft long paperweight.
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08-02-2022, 05:23 PM | #21 |
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Thanks. I guess I’m in the IIABDFI (if it ain’t broke don’t fix it) camp on this part. That’s unusual for me. I’m usually in the “if it ain’t broke let’s fix it til it is” crowd.
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08-02-2022, 05:54 PM | #22 | |
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I had a rear u joint that was feeling bad in my car so I swapped it. I think the stock driveshaft is a couple hundred more. Now I have a new stock driveshaft and a used spare.
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08-02-2022, 10:38 PM | #23 |
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Even the 3.5" have a critical speed. With the 4.55 gearing you might reach it sooner than you think. Like 8100 rpm.
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08-11-2022, 09:15 PM | #24 | |
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My CJ7's T-18 took a year for the shifting detents to wear in and get smooth. My arm hurt after driving it quite a few times shifting all day in it on the trails. |
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