991 Cup(Gen 1s) FYI and DIYs?
06-01-2018 | 08:18 PM
#31
Racer
Joined: Feb 2009
Posts: 378
Likes: 1
I cannot imagine there is a lot to do on the 991 if you run at club level, well below the cars potential.. Service and check every 3rd or 4th weekend ?
I understand about the compressor and condensation.
06-01-2018 | 08:33 PM
#32
Racer
Joined: Feb 2013
Posts: 434
Likes: 14
From: Sacramento
991
its possible, but it’s a lot of work and all the thought and labor involved does detract from the energy (and enjoyment) you have for the driving. I’ve had a 991 now for 4 months and although I can imagine doing it solo, it scares the **** out of me and I think I would drop the event if I didn’t have someone’s help.
Gas cans to fill, tires to change, nuts to torque, tire pressures. As it is I feel like I don’t have much down time at the track. You’ll want to change the oil, transmission fluid, brake flush, etc. at least every other outing. the brake flush is a three man job. The manual even says clutch bleed after each session. Took me hours to figure out the f’ing Cosworth data, and that’s with the Cosworth guy at the track. Its a ton of stuff to learn and the information is not easily accessible.
Gas cans to fill, tires to change, nuts to torque, tire pressures. As it is I feel like I don’t have much down time at the track. You’ll want to change the oil, transmission fluid, brake flush, etc. at least every other outing. the brake flush is a three man job. The manual even says clutch bleed after each session. Took me hours to figure out the f’ing Cosworth data, and that’s with the Cosworth guy at the track. Its a ton of stuff to learn and the information is not easily accessible.
06-01-2018 | 10:05 PM
#33
Rennlist Member
Joined: Aug 2014
Posts: 2,840
Likes: 336
Originally Posted by Skibum1963
its possible, but it’s a lot of work and all the thought and labor involved does detract from the energy (and enjoyment) you have for the driving. I’ve had a 991 now for 4 months and although I can imagine doing it solo, it scares the **** out of me and I think I would drop the event if I didn’t have someone’s help.
Gas cans to fill, tires to change, nuts to torque, tire pressures. As it is I feel like I don’t have much down time at the track. You’ll want to change the oil, transmission fluid, brake flush, etc. at least every other outing. the brake flush is a three man job. The manual even says clutch bleed after each session. Took me hours to figure out the f’ing Cosworth data, and that’s with the Cosworth guy at the track. Its a ton of stuff to learn and the information is not easily accessible.
Gas cans to fill, tires to change, nuts to torque, tire pressures. As it is I feel like I don’t have much down time at the track. You’ll want to change the oil, transmission fluid, brake flush, etc. at least every other outing. the brake flush is a three man job. The manual even says clutch bleed after each session. Took me hours to figure out the f’ing Cosworth data, and that’s with the Cosworth guy at the track. Its a ton of stuff to learn and the information is not easily accessible.
06-02-2018 | 04:39 PM
#34
Racer
Joined: Feb 2009
Posts: 378
Likes: 1
Swapping tyres (it's ALL about the tires!), right torque, fueling. I can handle that. I suppose they come with a 90l +\- tank, it's a lot of laps on your own, likely you refuel once max over a sports cup week end/day
What happens if you dont bleed the clutch before every weekend ? That sounds like a major overkill but I gues there must be a reason.
Yeah the electronics/dash is likely to be very user unfriendly.
What happens if you dont bleed the clutch before every weekend ? That sounds like a major overkill but I gues there must be a reason.
Yeah the electronics/dash is likely to be very user unfriendly.
06-02-2018 | 06:54 PM
#35
Thread Starter
Rennlist Member
Joined: May 2002
Posts: 8,675
Likes: 11
From: Tampa, FL
A triple disc clutch has VERY little throwout bearing movement especially from the point of engagement to full release. any small amount of air could cause less than full disengagement of clutch and transmission damage. It is a JUST TO BE SAFE thing. afterall, the 991 rebuild is $35K with no serious damage. So you want to take care of the box..... I pulled a motor and tranny yesterday. Hope to post some pics in couple days. It is super simple BTW.
On the other topic of easier maintain that a 996 at track. If you do nothing during the day but put in fuel and check tire pressures on 996 Cup, then yeah you can do same to 991 at end of day. If you want to avail yourself of the wealth of information the car tracks for you to make you a better driver then it starts taking some time. If you also want to review videos, then more time. It is all a matter of how you want to use the wonderful tool that Porsche provided.
On the other topic of easier maintain that a 996 at track. If you do nothing during the day but put in fuel and check tire pressures on 996 Cup, then yeah you can do same to 991 at end of day. If you want to avail yourself of the wealth of information the car tracks for you to make you a better driver then it starts taking some time. If you also want to review videos, then more time. It is all a matter of how you want to use the wonderful tool that Porsche provided.
06-03-2018 | 05:53 PM
#38
Racer
Joined: Feb 2009
Posts: 378
Likes: 1
07-16-2018 | 07:20 PM
#39
Three Wheelin'
Joined: Aug 2013
Posts: 1,317
Likes: 32
From: North Jersey
engine hours, racecon
anyone know if you have ot have the car actually running to see/get values from the bosch racecon software which is the software for reading from/write to the ecu?
i can actuate the shifter, and see abs stuff, but many of the other values are all dimmed out with the car off. in the pmna manual it shows the racecon pages and those too are blank, empty....
im not at the car and dont want to just start the motor to read some values.
just curious if anyone knows the deal there.
i can actuate the shifter, and see abs stuff, but many of the other values are all dimmed out with the car off. in the pmna manual it shows the racecon pages and those too are blank, empty....
im not at the car and dont want to just start the motor to read some values.
just curious if anyone knows the deal there.
07-23-2018 | 10:43 PM
#40
Rennlist Member
Joined: Feb 2006
Posts: 13,728
Likes: 1,953
From: Wishing I Was At The Track
The compressor on the back wall of the passenger footwell. Just like any other compressor, water will be displaced. Most compressors have a purge valve at bottom to release water. This doesnt. So you literally have to shake it our of there. If you dont purge the water, you will find all of a sudden shifting is sporadic. We do ours here in Florida ever day to be safe with our great humidity.
07-25-2018 | 01:59 PM
#41
Thread Starter
Rennlist Member
Joined: May 2002
Posts: 8,675
Likes: 11
From: Tampa, FL
Since the units are like $8k from Motorsports, I have not tried to have anyone else look at them. Problem is TIME. These companies take FOREVER for service. Had to send in Cosworth Dash that wound up in England and was gone almost 8 weeks. We have a terminal chassis 991 Cup in right now. EVERYTHING is good inside and most outside (tub bad was insured and totalled which is beyond me) including motor and transmission. Anyway we are completely parting out so I plan to sell a bunch and keep some parts as spares so if you have to send something off, you might have a spare to plug in and not miss an event or two.