04-27-2021, 11:10 AM | #24 |
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IIRC the GT4 front aero requires chopping up your stock bumper, or buying another bumper to chop that one up instead
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04-27-2021, 12:12 PM | #25 |
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You either need to put a bunch of holes in the stock bumper or get a GT4 bumper with all the mounting holes in it. For the splitter support I believe you're gonna have to put some small holes in some of the plastic/ducking behind the bumper as well.
I think getting the GT4 bumper would be the easier way to go. |
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07-11-2021, 02:34 PM | #26 |
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Ended up going with Fall-line for setup. First off the shop, and service is top notch. These guys know what they are doing. JP set me up with custom jrz 3 way, the first of its kind with a true coilover for the rear from jrz. Spring rates are 1000f, 800r. Shook it down at Road America a few weeks ago and needed a little height adjustment. Will be heading to VIR later this month and should be really able to start pushing on new pirelli slicks.
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07-11-2021, 05:12 PM | #27 | |
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Can't wait to hear the feedback on this. |
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07-11-2021, 06:08 PM | #29 |
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07-25-2021, 08:49 AM | #31 |
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07-25-2021, 10:34 AM | #32 | |
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07-25-2021, 10:35 AM | #33 | ||
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07-26-2021, 05:11 PM | #34 |
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about how much did the JRZs run you? do they come with their own Camber plates?
Are you running stock weight? GT4s are about 3150lbs, so if you're still at stock GTS weight (~3600lbs) then that could of also been a contributor to your issues with the GT4 downforce. |
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07-26-2021, 06:53 PM | #35 | |
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Sparco buckets, ap brakes, spl arms, 18in e88's, aftermarket suspension. I'm guessing OP has non standard seats at the least so is probably pretty close to the same weight. Not GT4 car weight but definitely lighter than 3600. |
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07-27-2021, 12:41 PM | #36 |
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I followed @docall at VIR this weekend. Rocket fast and the class of the Intermediate group. Should have been in Advanced and tortured some of those ZL1's and ZO6's. Proud of @docall as he was rocking it and repping the GTS community.
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08-12-2021, 04:38 PM | #37 | |
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09-08-2021, 09:45 AM | #39 |
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Back to the original question...is it possible to increase the OEM KW spring rates a bit?
OEM M4 GTS Triple Adjustable ClubSport Front: 400 lbs/in Rear: 685 lbs/in Can we increase the rates to the standard KW 3W Clubsport rates at: Front: 575 lbs/in front Rear: 800 lbs/in rear
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09-08-2021, 05:05 PM | #40 | |
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09-08-2021, 06:01 PM | #41 | ||
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09-08-2021, 06:12 PM | #42 | ||
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I might go this route before spending 9k on MCS 3WR and leaving the KW Clubsports useless. Time to measure spring lengths. The spring diameter should be 60mm all around. Might as well switch to the GC rear weight jacks for ease of adjustment and to get a lower rear height.
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05-03-2022, 06:07 PM | #43 | |
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05-05-2022, 06:50 PM | #44 | ||
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