Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > 911 / 930 Turbo & Super Charging Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Aug 2007
Location: Denver CO
Posts: 293
squeaky brakes

My breaks on the 79 started to squeek last weekend...Took the wheel off and the rotors have hairline cracks in the slotted holes. Are these safe to have resurfaced? I see new ones are about 500 bucks each..
__________________
1979 930 Euro
50k:Lindren Green:B&B Dual Out Pipes:K27:965 I/C: --SOLD!!
Old 04-08-2008, 06:22 PM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
Certifiable
 
Quicksilver77's Avatar
 
Join Date: Jan 2008
Location: Folsom, CA
Posts: 194
Send a message via Yahoo to Quicksilver77
$tart $aving! I have never re-surfaced a set of cross-drilled rotors. The cracks and rotor thickness are MY indicators to change rotors!
Though there are far more experienced individuals on this forum who may say otherwise...?
__________________
Sean D. 1987 930
India Red/Beige/Black; Mahle 3.4L; Kokeln IC; K27 7200; GHL Headers; Borla Stainless Muffler; SC cams; Sachs Aluminum Clutch; Aluminum flywheel; Bilstein Sport Shocks; Adjustable Rear Sway Bar; Weltmeister Shock Tower Brace; Lowered and Corner Balanced; MOMO RSGT Seats...
Old 04-08-2008, 07:25 PM
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)
Non User
 
infraredcalvin's Avatar
 
Join Date: Sep 2007
Location: Ladera Ranch, CA
Posts: 1,206
Garage
In general cross drilled rotors can be resurfaced, but you have to take them to someone who knows what they are doing. They have to be turned at a very slow rate, it takes them about 3x as long. As far as the cracks, It's my understanding that with hard use they will crack, they sell the cryogenically frozen rotors that helps resist the cracking. I don't have drilled rotors on my porsche so I'm out of my league in guessing the expected life of rotors. I'd check the thickness and look for deep groves, if either is out of whack, replace...

sorry for the lack of info...
__________________
Infraredcalvin - AKA Pat
'76 Turbo Carrera #311 - Factory LSD, Sport Seats
'75 914 GT clone project
'74 914 track basket-case
Old 04-09-2008, 09:22 PM
  Pelican Parts Technical Article Directory    Reply With Quote #3 (permalink)
Registered User
 
cl8ton's Avatar
 
Join Date: Aug 2007
Location: The Golden State
Posts: 1,533
I had my rear cross-drilled rotors done by a local machine shop company.
They used the same machine that resurfaces flywheels utilizing a grinding wheel to reduce “bumping” on the rotor face.
__________________
Rod...
2010 - 997 PDK, Black on Black, Daily driver.
1987 - 930 Grand Prix White, Not looking for crazy HP, just harmony!
Old 04-09-2008, 09:53 PM
  Pelican Parts Technical Article Directory    Reply With Quote #4 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 05:24 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2016 Pelican Parts - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.