997.2 Track Prep
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From: Mid-Atlantic
997.2 Track Prep
I get 8 to 10 track days per year and am about to pick up a 997.2 C2S. This will be a daily driver. What is current thinking around track prep? I'm interested in alignment specs and required upgrades. I drive in Red or Black run groups. DEs only, VIR and Summit Point.
Thank you in advance for your comments.
Thank you in advance for your comments.
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Joined: Jul 2009
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From: MA
997 forum has tons of info on this topic. go with minimal mods in the beginning.
front axle: adjuatable fork arms, GT3 or RSS tarmac LCAs; rear axle: tarett toe arms.
also put on latest GT3 sway bars, front and rear. camber depends of what rubber you want to use.
front is typically set from -2 to -3 degrees, rear is set to -1.5 to -2.5, keeping .5 deg diff between front/rear. front toe is 0, rear toe 0.10.
adjustable fork arms in front are needed to set required caster, mine is set to 8.2 equal on both sides. on stock suspension it differs front/left.
after those mods you can decide for yourself if you want to swap shocks/springs to something else or continue rebuild.
front axle: adjuatable fork arms, GT3 or RSS tarmac LCAs; rear axle: tarett toe arms.
also put on latest GT3 sway bars, front and rear. camber depends of what rubber you want to use.
front is typically set from -2 to -3 degrees, rear is set to -1.5 to -2.5, keeping .5 deg diff between front/rear. front toe is 0, rear toe 0.10.
adjustable fork arms in front are needed to set required caster, mine is set to 8.2 equal on both sides. on stock suspension it differs front/left.
after those mods you can decide for yourself if you want to swap shocks/springs to something else or continue rebuild.
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Intermediate
Joined: Nov 2006
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From: Mid-Atlantic
Thanks Paul. Good info. I'll be on Hoosiers as soon as I can find a set of used wheels to put them on. That being said, I likely won't be as aggressive as I could because I'll be working on a compromise set up with this car being a daily driver.
No problem with oiling on the .2's when wearing race rubber? I'm hearing the new DFI motor has more or better positioned pickups making this a non-issue. I have not seen the design so interested in feedback on this.
No problem with oiling on the .2's when wearing race rubber? I'm hearing the new DFI motor has more or better positioned pickups making this a non-issue. I have not seen the design so interested in feedback on this.
Burning Brakes
Joined: Dec 2008
Posts: 1,062
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From: Ocala, FL
Thanks Paul. Good info. I'll be on Hoosiers as soon as I can find a set of used wheels to put them on. That being said, I likely won't be as aggressive as I could because I'll be working on a compromise set up with this car being a daily driver.
No problem with oiling on the .2's when wearing race rubber? I'm hearing the new DFI motor has more or better positioned pickups making this a non-issue. I have not seen the design so interested in feedback on this.
No problem with oiling on the .2's when wearing race rubber? I'm hearing the new DFI motor has more or better positioned pickups making this a non-issue. I have not seen the design so interested in feedback on this.
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Joined: Jul 2009
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From: MA
Best i can tell is that no one reported track related damage on 9a1 motors. You can PM BGB motorsports with this question as they did a 3.8 dfi motor install into GA racing cayman.
For track wheels try to find 9"/12" set in gt3 nb offsets, it goes fine on nb street cars.
For track wheels try to find 9"/12" set in gt3 nb offsets, it goes fine on nb street cars.
Burning Brakes
Joined: Dec 2008
Posts: 1,062
Likes: 3
From: Ocala, FL
Best i can tell is that no one reported track related damage on 9a1 motors. You can PM BGB motorsports with this question as they did a 3.8 dfi motor install into GA racing cayman.
For track wheels try to find 9"/12" set in gt3 nb offsets, it goes fine on nb street cars.
For track wheels try to find 9"/12" set in gt3 nb offsets, it goes fine on nb street cars.
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From: MA
but to say anything about longivity it probably would take 2-3 more years at least, it is still quite early to speculate, imho.
i wish that process to swap m96 for 9a1 would be simpler, i would probably do that on my car myself if it would not require to swap out ECU with all sensors and harnesses.
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From: Ormond Beach, FL
Best i can tell is that no one reported track related damage on 9a1 motors. You can PM BGB motorsports with this question as they did a 3.8 dfi motor install into GA racing cayman.
For track wheels try to find 9"/12" set in gt3 nb offsets, it goes fine on nb street cars.
For track wheels try to find 9"/12" set in gt3 nb offsets, it goes fine on nb street cars.
P.S. In the photo, the PCNA crate actually contains another fresh 0 hour GTS motor that is our only spare, belonging to the owner of the silver/blue #83 Porsche that sits 1 point behind Rum Bum in the driver's championship. It's a great year for the Porsche!
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Joined: Jul 2007
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From: Ormond Beach, FL
I would love to but I have no choice but to return the engine to the dealer in Northern California, as it's securing a rather exorbitant $25,000 core deposit.
We have been inside and out of the 3.4 DFI motors. There really doesn't seem to be anything in there but left over carbon! Other than the fact that some torque specs on bolts really need to be increased due to the RPM and abuse like flywheel bolts, vacuum assist pump bolts, etc, they don't show signs of fatigue in the form of power loss or oil puking.
We have been inside and out of the 3.4 DFI motors. There really doesn't seem to be anything in there but left over carbon! Other than the fact that some torque specs on bolts really need to be increased due to the RPM and abuse like flywheel bolts, vacuum assist pump bolts, etc, they don't show signs of fatigue in the form of power loss or oil puking.
