DE/Track Day Double Stint Question
09-25-2018, 01:24 PM
#1
Instructor
Thread Starter
DE/Track Day Double Stint Question
Currently running an '05 Boxster S with new tranny/flywheel/clutch, deep sump, 996 oil cooler, PSS-9 and Borla exhaust as a dedicated AX and track car. I was wondering how robust it would be to double stint on DE/track days. My son would run as a novice and I would run as an intermediate so that we could maximize run time. Other option is to trade off days if its too many runs in a day for the car. Appreciate any insight.
09-25-2018, 01:32 PM
#2
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Not all track days are created equal. How many sessions and minutes per session? An event with 2+ hours of track time per group is very different from a 4-20 minute sessions per run group event. The closer you are to the former format the harder it is on the car.
09-25-2018, 01:33 PM
#3
I double stinted my 04S a few times. The only issue I had was the power steering overheating a bit. Not sure if that is also a problem in the 987s. I think you would be ok with novice/ intermediate.
09-25-2018, 01:33 PM
#4
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Currently running an '05 Boxster S with new tranny/flywheel/clutch, deep sump, 996 oil cooler, PSS-9 and Borla exhaust as a dedicated AX and track car. I was wondering how robust it would be to double stint on DE/track days. My son would run as a novice and I would run as an intermediate so that we could maximize run time. Other option is to trade off days if its too many runs in a day for the car. Appreciate any insight.
She is green. I am white. Never had a problem with the double duty. Not much wear and tear from a novice driver.
Now, if you had 2 advanced drivers doing it, I'd recommend a 2nd set of pads and a second set of tires accompany you guys to the track.
Other than that, you shouldn't have any issues. Enjoy the time with your kid on the track. Can't imagine it gets much better than that...
09-25-2018, 01:36 PM
#5
Drifting
My son and I double dutied a 99 Spec Boxster. It handled it ok. But we quickly discovered double duty is tough for the drivers, need to come back early or go out late, or what if you're in the same run group? We ended up getting another track car.
09-25-2018, 02:09 PM
#6
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As others have said it really depends a lot on how hard the car is driven and that would depend on the drivers, the track, and the outside temperature.
Since your son is a green run group he probably won't put as much heat into the car as you would. Just keep checking the car and if someone has to sit out a stint to let the car cool down it is what it is. You should be OK but when your son gets faster it might be a lot for the car.
Since your son is a green run group he probably won't put as much heat into the car as you would. Just keep checking the car and if someone has to sit out a stint to let the car cool down it is what it is. You should be OK but when your son gets faster it might be a lot for the car.
09-25-2018, 04:15 PM
#7
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Typically double duty my car out of necessity. Over the years have never had an issue with one of my fellow drivers running it. If a race car is well prepped, double DE duty should be no problems. Cars are made to be driving and track cars are made to be beaten. Enjoy and if something breaks, it would have broken next weekend anyhow.
I do usually pit out a couple of minutes early and make sure the novice has time to focus and settle into the seat. Dont worry and keep a level head so your son can spend the entire time enjoying the weekend and not stressing over the car.
I do usually pit out a couple of minutes early and make sure the novice has time to focus and settle into the seat. Dont worry and keep a level head so your son can spend the entire time enjoying the weekend and not stressing over the car.
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09-25-2018, 05:20 PM
#8
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I instructed a husband and wife in a 991 C4s at Sebring in May, the car held up fine. They ran green and blue even though both were intermediate students and drove the car hard. The only concern I had was the brake pads so we checked them each day, especially the rear. The newer software braking the inside rear wheels tends to wear faster in novice/intermediate groups. Tech inspection assumes one driver and may let worn brakes pass as only needing to run one set of sessions. Since you have control over that I would tech consumables (tires and brakes) like they had to last two weekends in a row.
09-27-2018, 03:54 AM
#10
I think the major factor is the number of group !
if you double load a car in a pca track day with 5 run group, I would think that this is just fine.
But, doing so on a 3 ..or two run group day, could be quite hard for the car.
i.e.: give the car up to 50% load duty seems logical/mechanical to me.
But, again, this are just very basic conservative practices. Have you ever seen races like the 24 hours of Le Mans ?
if you double load a car in a pca track day with 5 run group, I would think that this is just fine.
But, doing so on a 3 ..or two run group day, could be quite hard for the car.
i.e.: give the car up to 50% load duty seems logical/mechanical to me.
But, again, this are just very basic conservative practices. Have you ever seen races like the 24 hours of Le Mans ?
09-27-2018, 06:16 AM
#11
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These cars are engineered for way more than DE double stints. My 02 Boxster S didn’t miss a beat last time I had her in a long track session, which was a 90 minute enduro at Sebring during 48 Hours PCA event earlier this year. I drove half the race, and a pro driver handled the other half. My car did just fine.
09-27-2018, 10:15 AM
#12
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We've run our 1986 951 track car for 4 years with both of us driving and had no issues, even on hot days. The biggest thing is figuring out how to adjust the belts quickly for the second driver so they get their track time. The second driver usually ends up going out at the end of the group but that's fine, as usually just a few of the fastest cars have made it around the track so she gets to run with them. Keep an eye on tires and brakes/rotors and you should be all set, P-cars were made to be driven hard! We run White and Blue, which are often back to back, so setting the belts up quickly is now getting pretty fast. Still not ready for a driver exchange at Le Mans but the car handles double duty easily. Enjoy the time with your son: wish I'd gotten to do that with my dad, whose three 356's got me hooked on Porsches.
09-27-2018, 01:37 PM
#13
Same... my car goes back to back sessions with 0 issues running advanced and advanced/intermediate.. My E36 was built with the intention of doing endurance racing, so most steps have been taken to maximize durability.
09-27-2018, 03:18 PM
#14
I instructed a husband and wife in a 991 C4s at Sebring in May, the car held up fine. They ran green and blue even though both were intermediate students and drove the car hard. The only concern I had was the brake pads so we checked them each day, especially the rear. The newer software braking the inside rear wheels tends to wear faster in novice/intermediate groups. Tech inspection assumes one driver and may let worn brakes pass as only needing to run one set of sessions. Since you have control over that I would tech consumables (tires and brakes) like they had to last two weekends in a row.
09-27-2018, 03:44 PM
#15
If it's a dedicated track car, just take out all the weight you can. Lightening the car (dramatically) impacts everything from braking to acceleration to handling to consumables.
As others have said, you probably won't be able to out drive the engineering in a DE.
-td
As others have said, you probably won't be able to out drive the engineering in a DE.
-td