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S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


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Old 12-01-2019, 10:27 PM   #1
Bonerchamp
 
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S13 BC BR Coilovers Bouncy As Shit

I've got a 99 coupe with brand new bc br coilovers on it s14 rear subframe with z32 wheels 225/50 16. The ride is alright but when on uneven bridges it's bouncy as shit. I initially thought it was the preload as I got them used on another shell but they had only been mounted- no miles. I set them all to the recommended 4mm of preload and one of the rears had way too much. Test drove over the bridge still bouncy as shit on full soft. Pulled over put rear damper to 9 clicks from full soft. A little better but I'm still almost bouncing out of my seat on bigger bumps. My room mate has a coupe on d2s and drove over the same bridge and is not anywhere near as bad. I'm leanong towards my tires being too soft. Curious on what others might think. Or if they've had this issue with bc br coils or if I just need to break them in.
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Old 12-02-2019, 10:23 AM   #2
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a lot of my friends did the BC, not sure how they set them up but they rode really nice...I significantly preferred the powered by max coils, especially as I watched those same guys blow the coils fast...we have bad roads in NM lol
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Old 12-02-2019, 10:25 AM   #3
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I feel like it's gotta be my tires. It is noticeably better since I set proper preload trying to get a set of wheels by the end of the year and some stiffer tires to see if that's what it is. If those aren't the issue I'm probably just going to sell these and get some pbm or fortune auto as well.
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Old 12-03-2019, 09:00 AM   #4
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I have BC's on my car that were manufactured in 2013. Never been rebuild, stock springs. They ride less bouncy than my buddies fortune autos with swifts when he had them on full soft.
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Old 12-03-2019, 09:08 AM   #5
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We're they bouncy when you first got them? I've noticed that they've gotten better over the last few days. I guess I just have to break them in for a few hundred miles
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