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Tracking / Autocross / HPDE / Drifting What these cars were built for! |
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09-14-2021, 09:48 AM | #1 |
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Suspension bouncing on long right hander
My car was doing something odd on track in my last session. There's a long med/high speed right hander with a lot of camber and many times in that corner my car did a sort of rhythmic bouning when I was around 33% throttle. This in the second half of the lightbulb at NJMP lightning, for those familiar.
Is this porpoising? Anything I can do to address? Thanks! 2013 FRS Tein Flex Z coilovers set to about 66% of the way to full firm 1" lower than stock Stage 2 tune and bolt ons |
09-14-2021, 02:01 PM | #2 |
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Could it be a blown damper?
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09-14-2021, 02:12 PM | #3 |
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+1 play with the damper knobs and see if you can find an improvement.
Assuming there's nothing bound up or worn out on the suspension. |
09-14-2021, 02:15 PM | #4 |
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Do you have a datalog?
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09-14-2021, 03:18 PM | #5 |
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09-14-2021, 03:21 PM | #6 | |
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Quote:
I do get a front suspension clunk when reversing out of the driveway with the wheel turned after the car sits for a while but it's been doing that for a long time. I'll check if anything has any play. |
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The Following User Says Thank You to Akrochik For This Useful Post: | alphasaur (09-15-2021) |
09-14-2021, 03:23 PM | #7 |
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I specifically need a datalog to help you. Otherwise, we're just guessing.
Any clunking is not normal. |
The Following User Says Thank You to CSG Mike For This Useful Post: | norcalpb (09-14-2021) |
09-14-2021, 05:42 PM | #8 |
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How are your axles looking? Any play in the CV joints when you shake the axle from the middle of the shaft?
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09-15-2021, 09:30 AM | #9 |
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Would you characterize the bouncing as more of "left to right" or "front to back"?
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04-03-2023, 12:16 PM | #10 |
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Thanks to all that tried to help. Going full firm on the dampers fixed it. The clunk was fixed when I greased the end link fitting
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The Following User Says Thank You to Akrochik For This Useful Post: | strat61caster (04-03-2023) |
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