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Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing. |
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05-27-2022, 09:21 PM | #71 |
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I'm curious about the 1st gen LCA too. I think I'll wait until all this stuff gets ironed out before doing any suspension mods.
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05-30-2022, 05:30 PM | #72 | ||
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https://www.racecompengineering.com/...ension-changes Rear motion ratio is a tiny bit higher with the 2nd gen. The example I gave in the article is that a 300 lbs/in rear spring would be about 10 lbs/in stiffer in wheel rate on 2nd gen compared to 1st gen. Not huge, but it's there. Then there's the slightly increased track width in the rear that works against that. One thing that's interesting is that most 1st gen adjustable rear LCAs actually already have the 2nd gen geometry. This is because the 2nd gen BRZ rear LCAs are the same part number as they are Subaru VA chassis (2015-2021 WRX and STI) and many aftermarket companies have been using the same LCAs for both 1st gen BRZ, VA chassis, and a whole bunch of other Subarus (for better or worse). The act of adjusting the LCAs changes the motion ratio a tiny bit anyway. For me it's not a large concern. I do not expect anyone to make an adjustable 2nd gen specific rear lower control arm, but I'm not in the rear lower control arm business. The MCA traction mod should not affect motion ratio as far as I'm aware. - Andrew |
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06-03-2022, 10:20 PM | #73 | |
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I know Verus isn't one of them.
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06-10-2022, 08:52 AM | #74 | |
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Gets complicated with the arms that have multiple mounting holes and the Cuscos that have 2 position mounting key thing. Again the difference is small and when you adjust camber with the LCA it changes the length of the arm and the motion ratio slightly anyway. - Andrew |
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06-10-2022, 02:26 PM | #75 | |
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I'm more worried about legality in the autox STR class than motion ratios at this point though. If you ever confirm, please share!
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07-05-2022, 10:01 PM | #76 |
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If anyone is curious.
2013-2020 BRZ (2013-2014 wrx & STI) RLCA part#20250FG042. 2022 BRZ (2015-2017 WRX & STI) RLCA part #20250AL011. |
The Following User Says Thank You to Xed32 For This Useful Post: | Racecomp Engineering (07-06-2022) |
07-06-2022, 10:05 AM | #77 | |
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07-08-2022, 02:56 PM | #78 | |
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You can find my posts on this forum where I measure these Verus arms and they don't match the geometry of gen2 cars, and thus are not legal in SCCA STR.
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