11-20-2020, 01:41 PM | #43 | |
Drives: Track prepped 2018 Camaro ZL1 (a10) Join Date: Aug 2013
Location: Victoria B.C. Canada
Posts: 1,388
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Yes there’s definitely trust that SPL knows what they are doing but I don’t think it’s a far-fetched assumption either. They also said that their tension rods would give me the ability to increase caster, independently of camber, to somewhere between 8.5 And 9.5 which is what they claim a lot of guys tracking the Camaro are at. Apparently without this product the caster is tied to the camber which is why I am now at 7.6 up from my original 6.9 because I’ve increased the camber to -2.5
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2018 ZL1; Mag 2650 and 2 inch LT Headers , every SPL suspension upgrade, MCS 2 way coilovers, sway bars, square SC3R 325's all the way around, and multiple brake cooling upgrades
Last edited by GunMetalGrey; 11-20-2020 at 02:00 PM. |
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11-20-2020, 01:42 PM | #44 | |
Drives: Track prepped 2018 Camaro ZL1 (a10) Join Date: Aug 2013
Location: Victoria B.C. Canada
Posts: 1,388
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Is there a code or something?
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2018 ZL1; Mag 2650 and 2 inch LT Headers , every SPL suspension upgrade, MCS 2 way coilovers, sway bars, square SC3R 325's all the way around, and multiple brake cooling upgrades
Last edited by GunMetalGrey; 11-20-2020 at 02:00 PM. |
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11-20-2020, 01:44 PM | #45 |
Drives: 2016 1ss camaro Join Date: Feb 2016
Location: 909
Posts: 9,818
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i saw it on facebook they said keep posted for more details
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16 1SS NIGHTFALL GRAY METALLIC WITH NPP #BECAUSERACECAR #SAVETHEMANUALS
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11-20-2020, 01:45 PM | #46 | |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
Posts: 5,091
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11-20-2020, 02:12 PM | #47 | |
Drives: Track prepped 2018 Camaro ZL1 (a10) Join Date: Aug 2013
Location: Victoria B.C. Canada
Posts: 1,388
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Quote:
He said he would send me and/or my alignment shop the specs on how much adjustment was needed.
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2018 ZL1; Mag 2650 and 2 inch LT Headers , every SPL suspension upgrade, MCS 2 way coilovers, sway bars, square SC3R 325's all the way around, and multiple brake cooling upgrades
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11-20-2020, 02:35 PM | #48 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
Posts: 5,091
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11-20-2020, 04:40 PM | #49 | ||
Drives: Chevrolet SS 1LE Join Date: Oct 2019
Location: St. Charles, MO
Posts: 1,446
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Using the stock adjustment, I don't see how setting camber using the factory adjustment could change caster. That doesn't really make sense. On my 1LE, going from the as-delivered -1.4/-0.9 (left/right) camber to -2.7 on both sides using the stock camber adjustment didn't change my caster one single bit. It read 7.6 and 7.3 before and after the camber change. That's what we'd expect. Also, it's not clear that normal alignment machines can accurately read caster or steering axis inclination because there is no single pivot point defined by a single lower ball joint. Instead, there are two ball joints (one for each link) and a virtual pivot point defined by their instant center. But the problem is that as the steering is turned, that virtual pivot point moves...a lot. We could define static caster using the virtual pivot point. However, an alignment machine infers caster from the change in camber as the steering is cycled through its range, and that would not be accurate for our cars because that pivot point is moving. This all boils down to: I'd be interested to know the basis for measuring the caster that track drivers are using. I'd also be interested to know why more is better. Typically, the benefit of extreme caster only matter with extreme steering angles, such as autocross use. More than 7.5 or so is starting to get into the extreme range. So what benefit does 8.5-9.5 give on a road course?
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Matt Miller
2020 SS 1LE |
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11-20-2020, 05:28 PM | #50 | ||
Drives: Track prepped 2018 Camaro ZL1 (a10) Join Date: Aug 2013
Location: Victoria B.C. Canada
Posts: 1,388
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I'm quoting what the guy from SPL said, so I can't comment on whether or not he is right. My track has 19 turns in a 1 minute and 20 second lap so it is corner heavy and technical. This could all be a waste of money but only one thing is for sure, he definitely wants mine!
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2018 ZL1; Mag 2650 and 2 inch LT Headers , every SPL suspension upgrade, MCS 2 way coilovers, sway bars, square SC3R 325's all the way around, and multiple brake cooling upgrades
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11-20-2020, 06:25 PM | #51 | |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
Posts: 5,091
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Quote:
PS GM sells a lowering kit for a non 1LE SS without any specs re changing caster. PSS By design, the more caster the less responsive steering, the less responsive car = the more understeer. No race cars run such high caster, unless they are mid/rear engine cars. To the contrary, they usually run less than our stock caster to make them as responsive as possible. |
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11-20-2020, 06:33 PM | #52 | |
Drives: Track prepped 2018 Camaro ZL1 (a10) Join Date: Aug 2013
Location: Victoria B.C. Canada
Posts: 1,388
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Quote:
And good to know! Thanks They also offer a rear Toe lockout kit that apparently stops the alignment from getting out of whack and causing premature tire wear
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2018 ZL1; Mag 2650 and 2 inch LT Headers , every SPL suspension upgrade, MCS 2 way coilovers, sway bars, square SC3R 325's all the way around, and multiple brake cooling upgrades
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11-20-2020, 06:41 PM | #53 | |
Drives: 2016 1ss camaro Join Date: Feb 2016
Location: 909
Posts: 9,818
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thats the only spl part i have so far but will be getting more in future!
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16 1SS NIGHTFALL GRAY METALLIC WITH NPP #BECAUSERACECAR #SAVETHEMANUALS
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11-20-2020, 09:18 PM | #54 |
Drives: Chevrolet SS 1LE Join Date: Oct 2019
Location: St. Charles, MO
Posts: 1,446
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On this I was referring specifically to the spindle height and roll center. Chevy makes a range of ride heights on various trim levels of Camaros, and to my knowledge they don't do anything to correct the changes in RC that occur with the varying ride heights.
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Matt Miller
2020 SS 1LE |
11-20-2020, 09:56 PM | #55 | |
Drives: Track prepped 2018 Camaro ZL1 (a10) Join Date: Aug 2013
Location: Victoria B.C. Canada
Posts: 1,388
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Quote:
I also forgot they offered lowering kits from factory without roll centre correction.
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2018 ZL1; Mag 2650 and 2 inch LT Headers , every SPL suspension upgrade, MCS 2 way coilovers, sway bars, square SC3R 325's all the way around, and multiple brake cooling upgrades
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11-20-2020, 09:57 PM | #56 |
Drives: Track prepped 2018 Camaro ZL1 (a10) Join Date: Aug 2013
Location: Victoria B.C. Canada
Posts: 1,388
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I will be getting the front lower control arms so that I can increase camber. That’s the only part I’m getting for sure
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2018 ZL1; Mag 2650 and 2 inch LT Headers , every SPL suspension upgrade, MCS 2 way coilovers, sway bars, square SC3R 325's all the way around, and multiple brake cooling upgrades
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