06-19-2006, 10:51 PM
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#1
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Registered User
Join Date: Jun 2005
Location: bay area
Posts: 83
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Mach,
Never had a problem with the BMW services while the car was under warranty.
Enjoy your ride!
Richard
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06-19-2006, 11:17 PM
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#2
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Registered User
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
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Hi,
Economics aside, the horror stories stated here are exactly why I prefer to do my own work - I know it's done right!
Good Job on the Brakes, but I have to say that if you are not experienced, you need to have someone who knows assist you the first time. Also, you need to pay attention to properly lubing the brake hardware to insure a Caliper doesn't stick.
Also measure your rotor thickness to make certain that you're within spec. Typically, these rotors will go through two sets of pads and then they need replacing. This wear is accelerated with the use of more agressive Track or Street/Track pads. Failure to do so will cause the pistons to expand too much and corrode which then acts to prematurely wear the seals requiring rebuild/replacement of the calipers.
Runout should also be checked as well for maximum Braking efficiency and Pad wear. Failure to do these checks can be just as bad as not having the wheels properly torqued. You do it while you're in there because you're not in there every week, month or even year.
Changing Pads, while not Brain Surgery, is still Surgery and a certain amount of know-how is necessary to insure that both you, and the people you share the road with, remain safe...
Happy Motoring!... Jim'99
Last edited by MNBoxster; 06-19-2006 at 11:20 PM.
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06-19-2006, 11:21 PM
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#3
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Registered User
Join Date: Jan 2006
Location: CA
Posts: 259
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Quote:
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Originally Posted by MNBoxster
Hi,
Economics aside, the horror stories stated here are exactly why I prefer to do my own work - I know it's done right!
Good Job on the Brakes, but I have to say that if you are not experienced, you need to have someone who knows assist you the first time. Also, you need to pay attention to properly lubing the brake hardware to insure a Caliper doesn't stick and also measure your rotor thickness to make certain that you're within spec. Typically, these rotors will go through two sets of pads and then they need replacing. This wear is accelerated with the use of more agressive Track or Street/Track pads. Failure to do so will cause the pistons to expand too much and corrode which then acts to prematurely wear the seals requiring rebuild/replacement of the calipers. Runout should also be checked as well for maximum Braking efficiency and Pad wear. Failure to do these checks can be just as bad as not having the wheels properly torqued.
Changing Pads, while not Brain Surgery, is still Surgery and a certain amount of know-how is necessary to insure that both you, and the people you share the road with, remain safe...
Happy Motoring!... Jim'99
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Jim, all good stuff, thanks, and rest assured my car is well inspected. All POC events it has a full inspection by a qualified motorsports technician, as required. I see how easy it is to replace the rotors, also, so I'm looking forward to that, even though it is more money...
Where would you lube the brake hardware and what would you use to lube it?
__________________
Todd
2005 Boxster S - Atlas Grey/Black, PASM, Sport Chrono, Bose
2006 Infiniti M35 Sport
2007 Cadillac Escalade (tow vehicle with bling)
'00 Boxster - 2.7l w/FVD ECU tuning, Moton double adjustable suspension, custom stainless headers, lightweight flywheel, dual Magnaflow mufflers, 18" CCR wheels, 911 front brakes in front, Boxster front brakes in rear, full welded cage.
http://www.epiqautosport.com/images/epiqtoddavatar2.jpg
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06-19-2006, 11:44 PM
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#4
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Registered User
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
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Quote:
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Originally Posted by EPIQTodd
Jim, all good stuff, thanks, and rest assured my car is well inspected. All POC events it has a full inspection by a qualified motorsports technician, as required. I see how easy it is to replace the rotors, also, so I'm looking forward to that, even though it is more money...
Where would you lube the brake hardware and what would you use to lube it?
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Hi,
Typically, the Brake grease is part of the Pads fitment kit in the form of a capsule or small tube. Porsche recommends replacement of these parts every time the pads are replaced. From the Dealer Service Manual: " Fit new spreading spring, new holding pin and new retainer (retaining clip) These parts are available as a repair set and must be "renewed" each time the pads are replaced."
Most people believe they can get by with reusing the existing hardware, especially when the cost of new is factored in. The PN# for the Front, non-S Brakes is: 996.351.959.01 - list $24.95 and Rear, non-S Brakes is: 996.352.959.01 - list $35.00. I don't have the 'S' Brakes repair kit PN numbers. Neither Porsche or I recommend reusing this hardware, but if you insist, at least inspect it, clean it up with emery cloth to remove any dust or corrosion and then apply new grease.
You use High Temp Waterproof Brake Grease. Apply sparingly to the contact points where the piston meets the rear metal surface of the pad assembly, and to the holding pins. This grease "lubricates" the opposing vibrating surfaces, and therefore reduces or eliminates the resultant squeal and allows the pads to move freely and smoothly. Additionally, it provides some corrosion protection to the Pins as well. Be careful not to use too much, or get any grease on the friction surfaces, or you won't have any brakes. Brake pad grease can be purchased separately at most any auto supply store. Hope this helps...
Happy Motoring!... Jim'99
Last edited by MNBoxster; 06-19-2006 at 11:55 PM.
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06-20-2006, 07:07 AM
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#5
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Registered User
Join Date: Nov 2004
Location: New Jersey
Posts: 8,709
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I guarantee you the tech who forgot to torque you lugs was a newbie.
Sooner or later the young pups are let loose at the dealership and they do these sort of things until someone like you chews someones arse out and they track down Jimmy. He learns a hard lesson and pays more attention.
On my last visit to the Porsha house, The kid (and I mean kid, couldn't have been over 21) who "checked" my soft top relay was obviously right out of Porsche school. My soft top relay was bad according to him. I had to point out to him and the service rep that the relay wasn't bad because I JUST INSTALLED A NEW ONE! Well turns out it was just loose.
My dealership is a very high volume shop. The garage looks like a aircraft hangar I must have counted 15 lifts. They need to hire more people and have one guy who checks all of the new guys works and does a checklist inspection of every car leaving.
which reminds me how much torque should the wheel lugs get?
__________________
GT3 Recaro Seats - Boxster Red
GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11
Fabspeed Headers & Noise Maker
BORN: March 2000 - FINLAND
IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW
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06-20-2006, 07:21 AM
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#6
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Registered User
Join Date: Jan 2006
Location: CA
Posts: 259
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Quote:
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Originally Posted by Perfectlap
I guarantee you the tech who forgot to torque you lugs was a newbie.
Sooner or later the young pups are let loose at the dealership and they do these sort of things until someone like you chews someones arse out and they track down Jimmy. He learns a hard lesson and pays more attention.
On my last visit to the Porsha house, The kid (and I mean kid, couldn't have been over 21) who "checked" my soft top relay was obviously right out of Porsche school. My soft top relay was bad according to him. I had to point out to him and the service rep that the relay wasn't bad because I JUST INSTALLED A NEW ONE! Well turns out it was just loose.
My dealership is a very high volume shop. The garage looks like a aircraft hangar I must have counted 15 lifts. They need to hire more people and have one guy who checks all of the new guys works and does a checklist inspection of every car leaving.
which reminds me how much torque should the wheel lugs get?
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96 ft/lbs, and never tell a non-Porsche mechanic that because they will not believe you. I have gotten in heated arguments with wheel 'experts' who insisted no car can take more than 60 ft/lbs, and the old 'I've been torquing wheels for 47 years' thing.
__________________
Todd
2005 Boxster S - Atlas Grey/Black, PASM, Sport Chrono, Bose
2006 Infiniti M35 Sport
2007 Cadillac Escalade (tow vehicle with bling)
'00 Boxster - 2.7l w/FVD ECU tuning, Moton double adjustable suspension, custom stainless headers, lightweight flywheel, dual Magnaflow mufflers, 18" CCR wheels, 911 front brakes in front, Boxster front brakes in rear, full welded cage.
http://www.epiqautosport.com/images/epiqtoddavatar2.jpg
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06-20-2006, 07:27 AM
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#7
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Registered User
Join Date: Nov 2004
Location: New Jersey
Posts: 8,709
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Yeah that's why I can never remember which it is.
THe book says one thing but the drivers tell me another.
36 pounds is a big difference aren't the wheel bearings under too much pressure?
or is that not even affected?
and can they deny a claim because your not going by the book?
Also I have craftsman torque wrench and I don't really trust the accuracy of that little hash mark on the collar. is there a torque gauge (that doesn't cost $300).
__________________
GT3 Recaro Seats - Boxster Red
GT3 Aero / Carrera 18" 5 spoke / Potenza RE-11
Fabspeed Headers & Noise Maker
BORN: March 2000 - FINLAND
IMS#1 REPLACED: April 2010 - NEW JERSEY -- LNE DUAL ROW
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06-20-2006, 07:31 AM
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#8
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Registered User
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
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Quote:
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Originally Posted by EPIQTodd
96 ft/lbs, and never tell a non-Porsche mechanic that because they will not believe you. I have gotten in heated arguments with wheel 'experts' who insisted no car can take more than 60 ft/lbs, and the old 'I've been torquing wheels for 47 years' thing.
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Hi,
Interesting, get yourself a new set of Experts. The Wheel Lug torque spec on my Honda Passport is 92 ft-lbs., my wife's Jaguar - 96 ft-lbs., my wife's former Lincoln Continental - 92 ft-lbs., and my Lotus Esprit - 94 ft-lbs. It would seem that 90+ ft-lbs. of torque for Wheel Lugs is not only common, but prevelant through a lot of diverse cars...
Happy Motoring!... Jim'99
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