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 Forums > Porsche Forums > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
logician's Avatar
 
Join Date: Feb 2002
Location: San Francisco, CA
Posts: 604
Odd pinhole in '70 vintage 901/911 gearboxes

Upon inspecting my '70 901/911 (pull clutch) gearbox, I found an unexpected pin hole in the magnesum case. Look at 11 O'clock at the seat of the pivot bolt in the attached pictures. It's hard to see, but that dark spot is actually a hole, about 1/16" in diameter. I can insert a pin about 3/8" into it. I found the same hole in another 911 gearbox of similar vintage, so it's not a defect.

Does anyone here know if that hole has a purpose? It seems an unusual place for any kind of vent hole. The reason I'm interested is that I would like to seal it off, as my transmission appears to have a leak at the pivot bolt, and I would like to ensure that this hole is not the source.






__________________
www.ArtOfRoadRacing.com, Thunderhill, 30 Jan 2011
ArtOfRoadRacing@gmail.com

SM #34, '04 GT3, '73 911s, '70 911 2.7L PRC Toyo Spec #11
Old 10-11-2005, 03:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
PRO Motorsports
 
Tyson Schmidt's Avatar
 
Join Date: Nov 2001
Location: Burbank, CA
Posts: 4,471
That's a corrosion hole. Clean it as well as you can, and seal it up with some Dow-Corning RTV730, or some other very high quality sealant.

That's the downside to Magnesium. It corrodes and pits.

__________________
'69 911E coupe' 2.7E MFI (retired 911-Spec racer)
'72 911T Targa (Formerly "Scruffy")
2004 GT3
Old 10-11-2005, 09:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 10:43 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - 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.