this is courtesy of Kyle (Porsche917)...

Porsche came out with a bulletin for people that track their cars with center locking wheel option.... they want the locking nut greased and retorqued to a higher level in a 3 step process.

Kyle signed out before I could get more specifics and maybe he will post them in this thread...don't know if there were some wheel loss issues that inspired the bulletin but it sounds like it since it is track related...no other specifics as to the process or the retorqued level were given but I have asked Kyle for the info if he has it....word to the wise

 

multi page thread on RL in 997gt3 section with details
just a heads up...

 

thanks PJ...courtesy of savyboy on RL

1. For track use centerlock torque is now 600nm/444 ftlb
2. Special greasing procedures must be used.
3. Wheels must be off the ground when being torqued (call for help!)
4. Three step tightening procedure.
5. Center locking spline must be correctly engaged.

wheels off the ground when being torqued to 444 ftlb...are you serious?

 

Thank you

Shadowman

 

Grease can be ordered from dealer.....

 

What is the grease that they are talking about? The grease on the nut looks like never seize.

 

These center lock wheels are just sounding more and more attractive

 

Just a couple of points,

Applying grease to any surface with a Torque value is going to effect the figure, grease effects the value as opposed to a dry value, secondly "nipping" up the wheels in the air so they are tight and then applying the torque wrench on the ground is perfectly fine.

The information by Porsche is bang on and, as you would expect, correct.

IMPORTANT: You must use the Grease that is stated, any doubts, then get a respected shop/Tuner to do it for you.

Hope you don't mind me poking my nose in!

 

Going to take a hellabig torque wrench and a fat foot on the brake to get near 450 ftlbs.
Too bad they aren't pinned too so as to avoid loss or loosening.
I love the look of the centerlug and it is race oriented and techy, but with torque values like this, it makes it difficult to like.

 

whoa

 

According to my dealership, and the gentleman who works on my car at Boardwalk in Dallas indicates going beyond 500nm or 370ftlbs can be risky...the operations manual on the RS indicates no less than 500nm or 370ft lbs

 

your dealer should have the bulletin on this problem

 

I will definately have this conversation tomorrow.

 

to truly get their attention print out a copy of the 4 page service bulletin that I posted in the attachments to post #3....come back and let us know what happens please...perhaps Porsche has changed their mind about this

 

Dealerships are notoriously wrong. I'd much sooner trust an operations manual, plus a service bulletin, that comes from an internationally recognized sports/super car manufacturer over what a dealer says. Especially when those two things were written by a bunch of eggheads with more college degrees than you can shake a stick at versus a couple of guys at a dealer that probably never went farther than high school and/or technical school.