Parts Catalog Accessories Catalog Tech Info Tech Forums
 
  Search our site:    
 Cart  | Project List | Order Status | Help    
Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > 911 Engine Rebuilding Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Jul 2003
Posts: 19
Magnesium Cleaning

After cleaning at the local machine shop, my case halves came back still with traces of what looks like electrolysis not removed. I experimented in a very small area with a Dremel and bronze wheel and it comes up nice and bright, but is this okay to continue with? Is there possibly a protective coating of any sort on the mag parts, or do they just naturally turn gray with age?

Any other suggestions? The "electrolysis" is on parts of the throttle body exteriors as well.

Thanks
Francis Kennette
74 Carrera (euro)
Old 03-02-2004, 01:43 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #1 (permalink)
Registered User
 
garibaldi's Avatar
 
Join Date: Mar 2004
Posts: 337
.
__________________
Christian Garibaldi
Im a photographer now, so I dont know jack sh#t about cars anymore, I sold my knowledge on ebay

Last edited by garibaldi; 03-02-2004 at 02:30 PM..
Old 03-02-2004, 02:25 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #2 (permalink)
CEO, Pelican Parts Inc.
 
Wayne at Pelican Parts's Avatar
Are you talking about the mating surfaces? Be very careful cleaning those, as you don't want to place any scratches on them.

As for the interior of the case, yes - you can go to town cleaning it. I personally would not use any power tools inside the case though, as I would think that this would create too much powder and debris that may get into the inner case passages. I would stick with wire brushes (by hand) and carb/brake cleaner. If you look on page 125 of the Engine Rebuild Book, you will see what a corroded case looks like before it's adequately cleaned.

-Wayne
__________________
Wayne R. Dempsey, CEO, Pelican Parts Inc., and Author of:
101 Projects for Your BMW 3-Series 101 Projects for Your Porsche 911 How to Rebuild & Modify Porsche 911 Engines 101 Projects for Your Porsche Boxster & Cayman 101 Projects for Your Porsche 996 / 997
Coming in 2014:
101 Projects for Your MINI Cooper
Old 03-02-2004, 08:15 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Aug 2001
Location: Brighton UK since 11/2012
Posts: 3,169
There are a few different processes used for magnesium. On Hewland gearboxes a coating from Dow Chemical can be used. On brake calipers a polymer coating can be used. You should contact your local Dow or helicopter repair center and see what is on offer. I've not seen a mag case coated, but I don't see any reason why it could not be done.
__________________
From November 2012; Precision Porsche Specialist
Sussex UK, +44 (0)1825-721-205
2001-2012 Gerber Motorsport Inc. 206-352-6911
07.15.06 1996 Ducati 900SP. Suprisingly enough, it's red
08.16.09 1999 Kawasaki ZRX1100. Green.
Old 03-02-2004, 08:16 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Jul 2003
Posts: 19
Thanks for replies guys, but I'm referring to exterior of the case for cleaning (not the mating surfaces - they're okay w/ just scotchbrite & alcohol cleaning).

I've started doing the job w/ Dremel & small bronze wheels - a slow process but it comes out quite nice.

Francis
Old 03-03-2004, 07:57 AM
  Recommend this thread for the PelicanWiki    Reply With Quote #5 (permalink)
CEO, Pelican Parts Inc.
 
Wayne at Pelican Parts's Avatar
Same concerns - make sure nothing gets inside of the case. I would wait to clean the outside of the case until after the inside was sealed up...

-Wayne
__________________
Wayne R. Dempsey, CEO, Pelican Parts Inc., and Author of:
101 Projects for Your BMW 3-Series 101 Projects for Your Porsche 911 How to Rebuild & Modify Porsche 911 Engines 101 Projects for Your Porsche Boxster & Cayman 101 Projects for Your Porsche 996 / 997
Coming in 2014:
101 Projects for Your MINI Cooper
Old 03-03-2004, 02:03 PM
  Recommend this thread for the PelicanWiki    Reply With Quote #6 (permalink)
 
Now available:  101 Projects for Your Porsche Boxster!
Old 03-03-2004, 02:03 PM
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 



All times are GMT -8. The time now is 12:11 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 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.