Make/Model/engine/trans/packages: 2015 Ford Mustang GT premium w/PP
Track/Course: Laguna Seca
Best Lap Time: 1:46.91 @ 118.6 mph
Brake Pads: Stock
Tires (Size & Model): MPSS squared setup 275x19.5
Suspension: Stock
Other Mods: Roush spoiler
New best on new tires.
Interesting. I feel that the GT PP gearing is a bad match for Thunderhill and Laguna Seca. I short shift to 5th on the front straight at Laguna, and on the back straight at Thill to stay off the rev limiter. I also have to lift going into 11 to stay off the limiter. Moving the shift points might...
Clutch bleeding example
https://performanceparts.ford.com/Mustang/fr500sownerinfo/Clutch_Bleed_Procedure_FR500S_v1.pdf
I used a micro-brewer 8.5 stopper.
My video setup is simple,
iPhone 6
Harry's Lap Timer
From Amazon:
Ram Mount RAM-B-166U Double Ball Twist-Lock Suction Cup Mount
RAM Mount Cradle f/Apple iPhone 6
Norm,
I'm curious on this one. Someone else on this forum reported that the rotating mass of the two smaller, lighter disks felt like it was less that one heavier disk of larger diameter. do you know how to run the numbers on that?
The clutch shares fluid with the brakes. So total clutch line failure is probably not it. I have a vacuum clutch bleeder, per the Ford clutch bleeding TSB, it pulls from the top of the master reservoir. So the stock clutch line can trap air in the lower bend.
The service manager at the local ford dealer showed me a clutch disk that was burned to a crisp after 1 day at Laguna. But that kid was seriously abusing it. Mine has 7 HPDE days with no side effects, so far.
John,
You seemed to adapt to the mustang pretty quickly. Your cars "evil twin" now has 7 track days on it. My first mod will probably be camber plates and a good alignment.
Ted
My 2015 GT PP has 6 HPDE days on it so far. Mine had a bit of play in the driveshaft, and the dealer voluntarily swapped in a new driveshaft. The diff seems solid still.
I'm NorCal also, and I think 3.73 gears don't match Laguna and Thunderhill well. Annoying, but not enough to take the fun out...
It was a great laguna day. I only crossed your path once in the second session, while you were working through your sound issue. That 911 you mentioned and I were just behind the corvette that lost oil right before lunch. It puffed some smoke, so we didn't get surprised.