Cayman GT4 Track Blog
12-05-2015, 12:06 PM
#16
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Stock upright with no spacer.
Stock upright with 7mm spacer but not enough lip to make me comfortable mounting a wheel. Ginormous 14mm hub centric spacer not shown but going on car ASAP. It's raining right now so I'm hiding in the garages.
It may even be a 15mm spacer but why make small changes when time is of the essence?!
Last edited by BGB Motorsports; 12-05-2015 at 02:38 PM.
12-05-2015, 02:59 PM
#17
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john, why didn't you put studs and nice yellow nuts on hub?
wouldn't that solve the issue?
i LOVE those studs you showed me.
wouldn't that solve the issue?
i LOVE those studs you showed me.
12-05-2015, 04:43 PM
#18
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that's the next upgrade, trust me! Big spacer got rid of half the understeering by adding front grip without cheating and defeating rear grip!
12-05-2015, 05:03 PM
#20
12-05-2015, 05:05 PM
#21
Hmm. That much space in the front, and I'm assuming you weren't rubbing, then it seems like it's time to talk about wider rims/tires upfront... like the 265 mpsc2.
Will wait on more info you have available when you get around to it.
Will wait on more info you have available when you get around to it.
12-05-2015, 06:02 PM
#22
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Subscribed. Thanks for posting John. Looking forward to you guys kicking *** with the car.
Agree completely on HP. I think it will render the gearing "issue" moot.
Agree completely on HP. I think it will render the gearing "issue" moot.
12-05-2015, 06:44 PM
#23
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Matt is all done for the weekend as well as a few other Rennlisters who came out. All in, successful event; I'm think of maybe doing this quarterly as we visit a few tracks on the east coast this summer with my club racing customers.
Brakes are really good; tires are impressive for street rubber. More mechanical grip generating more corner speed in slow corners would make you want a shorter 2nd even less. At faster tracks like Elkhart or Willow Springs it would be definitely be an improvement but if you track places with slow corners you would prefer stock gearing.
I ditched my male 200 lb passengers and traded up for Aleks and it was worth + 2mph! See photo below!
P.S. I didn't drive the car with just the ride height change because i became obsessed with the bigger spacer. While not good for driveway clearance I think down another 2 turns in front (started with -3 turns front ride height) and maybe up 2 - 3 in the rear would probably get me where I want to be. Adding the camber after that will be like adding horsepower!
12-05-2015, 11:05 PM
#24
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So hopefully the 9" Forgeline fronts will do the same re. understeer...
12-06-2015, 07:56 AM
#25
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thanks bud, and thanks to the others for the positive feedback. If I can be honest, I do this stuff to demonstrate the passion we have to make this car better. You guys have supported us and I am giving back in the form of information. I'm also doing it though so that you guys will want to buy parts and services from us because we will not only sell you stuff for this car but we will tell you how to make it better and support our customers with R&D data. I'm here to sell and build a business but I like educating you guys because I remember a time when I used to buy stuff from people who couldn't tell me why it improved anything; they just wanted my VISA # and to know how much I wanted to spend!
12-06-2015, 10:39 AM
#26
^ love it. There are plenty of companies out there today who still operate under this model. I'm looking forward to hearing more input as you hit more tracks on the east coast. I'm curious if you guys uncover anything else. Keep up the great work and thanks for sharing.
12-07-2015, 08:52 AM
#29
I was finally able to achieve a more neutral balance somewhat but it definitely improved more in faster corners where you can really generate the body roll. The bars will fix it in the slow corners but so will the camber because in hairpins you can't generate as much body roll. I want to achieve a good balance with the bars in the middle before I go to the camber but no tire rub up front. More negative camber up front would allow another few millimeters of spacer but I think a 15mm is big enough.
Matt is all done for the weekend as well as a few other Rennlisters who came out. All in, successful event; I'm think of maybe doing this quarterly as we visit a few tracks on the east coast this summer with my club racing customers.
Brakes are really good; tires are impressive for street rubber. More mechanical grip generating more corner speed in slow corners would make you want a shorter 2nd even less. At faster tracks like Elkhart or Willow Springs it would be definitely be an improvement but if you track places with slow corners you would prefer stock gearing.
P.S. I didn't drive the car with just the ride height change because i became obsessed with the bigger spacer. While not good for driveway clearance I think down another 2 turns in front (started with -3 turns front ride height) and maybe up 2 - 3 in the rear would probably get me where I want to be. Adding the camber after that will be like adding horsepower!
Matt is all done for the weekend as well as a few other Rennlisters who came out. All in, successful event; I'm think of maybe doing this quarterly as we visit a few tracks on the east coast this summer with my club racing customers.
Brakes are really good; tires are impressive for street rubber. More mechanical grip generating more corner speed in slow corners would make you want a shorter 2nd even less. At faster tracks like Elkhart or Willow Springs it would be definitely be an improvement but if you track places with slow corners you would prefer stock gearing.
P.S. I didn't drive the car with just the ride height change because i became obsessed with the bigger spacer. While not good for driveway clearance I think down another 2 turns in front (started with -3 turns front ride height) and maybe up 2 - 3 in the rear would probably get me where I want to be. Adding the camber after that will be like adding horsepower!
Really step by step and let the owner understand the impact of each change.
I need someone like you and your workshop in Germany
