When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hello Everyone,
I've been away from the track for a while while living in Europe and am excited to stage a slow re-entry with my '19' RS before I potentially buy a race car again- I've pledged in blood that it wont be a track car but there are a few things I need some basic guidance on if you don't mind. Thanks in advance!
1. Which discs setup do you prefer- Floating/fixed- I don't want to burn out my PCCB- in the past I loved the PFC with PFC 06- (996 GT3 race car)
2. What wheel size and Hoosier size does everyone prefer? I used CCW C14 in the past...
3. I'll play with the bars at the track but generally?
4. And the camber/toe that balances street/track use?
5. Car has a roll bar.
6. Other considerations?
Cheers everyone, see you at the track I hope. I'm in NYC....
Aero: Maximum downforce for our time at RA ARB: Both set to middle Setup: Per alignment below, which was recommended by Weissach as a basis for optimum track performance, as set up by Kellen Miller at PECATL, who I can attest is very thorough. Not a "sufficient" kind of guy. From my own observation, both the 2RS and 3RSs on hand were very low—particularly at the rear. Gotta say they handled brilliantly...very confidence inspiring.
Alignment specs for the Guards Red GT2 RS, Lizard Green GT3 RS, and Lava Orange GT3 RS:
· Front camber: -2°
· Rear camber -2,5°
· Front toe: 0-+1‘ (per side)
· Rear toe +10‘-12‘ (per side with 8mm shims 991 331 543 84 installed)
· Re-connect anti-roll bars in the zero (center hole) position.
My shop is measuring front ride height at the stock position: 120mm
But for the rear, they measure from the bottom of the rear subframe (which they say is the same as the factory cup car position?): 150mm
The numbers quoted in this thread seem to be much higher, at around 260mm+. What measurement point is that? From the looks of the document posted earlier, it appears to be the bottom of the rear subframe, no? So I'm confused about why this shop is telling me 150mm instead of something in the 260 range. That's a 4-inch delta. Just trying to wrap my head around what's happening.
My shop is measuring front ride height at the stock position: 120mm
But for the rear, they measure from the bottom of the rear subframe (which they say is the same as the factory cup car position?): 150mm
The numbers quoted in this thread seem to be much higher, at around 260mm+. What measurement point is that? From the looks of the document posted earlier, it appears to be the bottom of the rear subframe, no? So I'm confused about why this shop is telling me 150mm instead of something in the 260 range. That's a 4-inch delta. Just trying to wrap my head around what's happening.
I don't know the name of the structure, but the rear is measured from the bottom of a small, flat plate that is attached to the rear wheel/suspension.
So if there is a spot on the chassis specifically designed for height measurement, why would a shop intentionally choose not to use this location? This is a shop that works mostly with Porsches and has their own fleet of arrive-and-drive clubsport cars.
Last edited by FourT6and2; 10-21-2021 at 10:56 PM.
So if there is a spot on the chassis specifically designed for height measurement, why would a shop intentionally choose not to use this location? This is a shop that works mostly with Porsches and has their own fleet of arrive-and-drive clubsport cars.
Convenience perhaps? Arrive-and-drive operators are set up for efficiency...
Ask any shop that deal with sanctioned racing series they'll measure exactly as prescribed. Ride heights are black-and-white stuff--infractions have serious consequences.
Convenience perhaps? Arrive-and-drive operators are set up for efficiency...
Ask any shop that deal with sanctioned racing series they'll measure exactly as prescribed. Ride heights are black-and-white stuff--infractions have serious consequences.
Seems strange to me. It shouldn't be any more or less convenient to measure one spot over the other. You've got the car up on a lift and on scales either way. It's just a matter of choosing this location or that location. But to specifically choose to not use the location designed for it, that everybody else uses... I just don't understand. The shop didn't tell me why they choose to do it. But now I have no real reference point for comparison.
05-03-2020, 05:43 PM
