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
 
Join Date: Oct 2006
Posts: 255
Case Savers in Magnesium case

Two of my transmission studs are not holding torque in my mag case. They spin about 20ft lbs.
I noticed this when removing nuts when replacing flywheel seal. Any ideas????
Old 05-17-2019, 03:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Dec 2014
Location: Syracuse,Ny
Posts: 2,227
Loctite
Old 05-17-2019, 04:51 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Brew Master
 
cabmando's Avatar
 
Join Date: Jul 2013
Location: Delphos Ohio
Posts: 13,280
Garage
Not saying mine would be the best solution but could you go up one thread size and tap new threads? From what I remember there's a bit of play in the holes for the transmission.
__________________
Nick

Last edited by cabmando; 05-17-2019 at 05:07 AM..
Old 05-17-2019, 05:05 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
It's a 914 ...
 
stownsen914's Avatar
 
Join Date: Jan 2008
Location: Ossining, NY
Posts: 1,695
The problem is that the threads are damaged/stripped, or that the stud is turning in the case when you attach the trans and tighten the nuts?
Old 05-17-2019, 09:46 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Under the radar
 
Trackrash's Avatar
 
Join Date: May 2007
Location: Sebastopol, the land of wine and redwoods in The Republic of California.
Posts: 5,938
Garage
I seem to remember having heli coils in those threads on my old 2,2. That may be an option if there is enough good metal around the threads.
__________________
Gordon
___________________________________
'71 911 Coupe 3,0L outlawed
#56 PCA Redwood Region, GGR, NASA, Speed SF
Trackrash's Garage :: My Garage
Old 05-17-2019, 12:07 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 7,302
Case saver, 10x1.75, just like doing head studs
Bruce
Old 05-17-2019, 12:45 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Vintage Owner
 
Jack Stands's Avatar
 
Join Date: Jun 2013
Location: Park Ridge, IL
Posts: 1,685
Garage
Case savers would be the strongest alternative. Timeserts May be another, but I’ve seen Timeserts that have also pulled out of magnesium cases (tobe then replaced with Casesavers).
__________________
84 Targa
70 914-6
73 914-6 2.7 conversion (sold)
75 GMC Motorhome
Old 05-17-2019, 12:56 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Oct 2006
Posts: 255
Quote:
Originally Posted by BSNMOE View Post
Two of my transmission studs are not holding torque in my mag case. They spin about 20ft lbs.
I noticed this when removing nuts when replacing flywheel seal. Any ideas????
I left out probably the most important part of my post.
I already had case savers installed 12 yrs ago. Case savers appear to have a larger insert which does not leave me with much room for error.
Iím not sure if loctite or JB Weld would hold 28/30 ft lbs.
Old 05-18-2019, 05:31 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
It's a 914 ...
 
stownsen914's Avatar
 
Join Date: Jan 2008
Location: Ossining, NY
Posts: 1,695
Blue Loctite should hold that torque. Worst case you can use the red stuff - just keep in mind that heat is typically needed to remove fasteners when you use red Loctite.
Old 05-18-2019, 05:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
abit off center
 
cgarr's Avatar
 
Join Date: Feb 2002
Location: At the Airport Kentwood, MI
Posts: 7,076
Garage
Send a message via Yahoo to cgarr
A timecert should work fine in that area without the thermo expansion issue as with the heads


Sent from my iPhone using Tapatalk
__________________
______________________
Craig
G2Performance
Twinplug, head work, case savers, rockers arms, etc.
Old 05-19-2019, 06:50 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
cmcfaul's Avatar
 
Join Date: Feb 2003
Posts: 1,515
Garage
Send a message via AIM to cmcfaul Send a message via Yahoo to cmcfaul Send a message via Skype™ to cmcfaul
Happened on mine. Went casesaver and worked. Found the Mag cases get brittle over time and heat cycles.

CM
Old 05-20-2019, 12:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
Join Date: Oct 2006
Posts: 255
My problem may be case savers were already installed. The outside diameter is 12mm so the hole is pretty large.
Iím now waiting for new studs to test how well they hold torque.
One side looks ok but the opposite side appears to have rotated in which may continue to rotate inward.
Old 05-20-2019, 02:44 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
 
Registered User
 
Join Date: Oct 2006
Posts: 255
Quote:
Red locktite did not hold.
The case saver left about 13mm hole. I’m not sure if it’s enough of magnesium on the mounting ear to go larger.
Any suggestions
Thanks
Old 05-30-2019, 03:28 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
Join Date: Oct 2006
Posts: 255
IMG_2744.jpg
Old 05-30-2019, 04:08 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered User
 
Join Date: May 2006
Location: Snohomish, WA
Posts: 1,525
Garage
BNSMOE,

I’ve used JB Weld on my mag case with good results. Lasted about 10 years and still holding. It’s lasted through several engine removals where the fasteners are removed and then re-torqued.

I’d remove the old case saver and JB Weld in new case savers. Let us know if it works.
__________________
Rex
1975 911s and 2012 Range Rover Sport HSE
1962 BMW R50/2, 1995 BMW R1100RS

Last edited by Walter_Middie; 05-30-2019 at 07:19 PM.. Reason: En
Old 05-30-2019, 07:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered User
 
Join Date: Oct 2006
Posts: 255
Quote:
Originally Posted by Walter_Middie View Post
BNSMOE,

Iíve used JB Weld on my mag case with good results. Lasted about 10 years and still holding. Itís lasted through several engine removals where the fasteners are removed and then re-torqued.

Iíd remove the old case saver and JB Weld in new case savers. Let us know if it works.
Thanks
That is what I was going to do.
I think JB Weld will fill in better than locktite
Old 05-31-2019, 08:49 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 04:02 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 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.