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 > 911 Engine Rebuilding Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Jonny042's Avatar
 
Join Date: Aug 2010
Location: Thunder Bay, ON/Grand Portage, MN
Posts: 1,986
Garage
Should I go near this case with a 10ft. pole?

This is a 7R mag case I'm very casually considering picking up for a future project.

It's basically a part of a basket case 1975 2.7 that's passed through a few owners for some reason.....

I'm told these are case savers, and obviously they've encroached enough on the spigots that the sealing surface is gone.

Run away?

__________________
87 Coupe - The Driver
78 Backdate - The Project http://forums.pelicanparts.com/porsche-911-technical-forum/979976-project-heavy-metal-all-steel-classic-remastered.html
85 Coupe - The Rot Rod! AX beater
Old 03-24-2019, 05:05 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
Yes, run away. I don't know that the sealing surface is that big a deal. Its just non-pressurized oil that can leak there. But the time-serts are not installed correctly (I'm assuming they have been expanded already). Getting them out to re-do correctly, without further damage to the case, is near impossible.
Old 03-24-2019, 05:48 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
Join Date: Apr 2016
Posts: 964
I spent $7500 in machining with Walt Watson on a much nicer mag case than the one you are showing me, because I wanted my 914-6 to have a mag case motor. Lots of rehab work goes into a mag case to do it right, not sure that I would ever intentionally start a mag case build ever again!
__________________
Current: 1970 914-6 conversion 2.7, 1973 T, 1975 930 Turbo Targa, 1978 928 Race car, 6.57L, 1983 911SC, 1987 928S4 5 speed, 2002 911 Targa, 2007 997TT, 2009 997TT, 2004 40th Anniversary Carrera, Mclaren 570S and 12C

Only reproduction 3.6 cases on the planet, coming soon www.taorminaracingdesigns.com
Old 03-24-2019, 08:09 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Jonny042's Avatar
 
Join Date: Aug 2010
Location: Thunder Bay, ON/Grand Portage, MN
Posts: 1,986
Garage
Too bad nobody is making new mag cases

Next project maybe?
__________________
87 Coupe - The Driver
78 Backdate - The Project http://forums.pelicanparts.com/porsche-911-technical-forum/979976-project-heavy-metal-all-steel-classic-remastered.html
85 Coupe - The Rot Rod! AX beater
Old 03-24-2019, 11:10 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Apr 2016
Posts: 964
Quote:
Originally Posted by Jonny042 View Post
Too bad nobody is making new mag cases

Next project maybe?
The foundry can make mag cases for me, but I struggle to see the point. 25 pounds of weight savings can be found all over your average 911, there is no need to reduce the weight of the crankcase and simultaneously create a case that is weaker and inferior to an aluminum case.....
__________________
Current: 1970 914-6 conversion 2.7, 1973 T, 1975 930 Turbo Targa, 1978 928 Race car, 6.57L, 1983 911SC, 1987 928S4 5 speed, 2002 911 Targa, 2007 997TT, 2009 997TT, 2004 40th Anniversary Carrera, Mclaren 570S and 12C

Only reproduction 3.6 cases on the planet, coming soon www.taorminaracingdesigns.com
Old 03-24-2019, 12:36 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 7,074
Instead of spending money on twisted, pulled, deformed case, buy a 3.0 and be happy ever after.
Bruce
Old 03-24-2019, 02:57 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
Jonny042's Avatar
 
Join Date: Aug 2010
Location: Thunder Bay, ON/Grand Portage, MN
Posts: 1,986
Garage
Quote:
Originally Posted by Catorce View Post
The foundry can make mag cases for me, but I struggle to see the point. 25 pounds of weight savings can be found all over your average 911, there is no need to reduce the weight of the crankcase and simultaneously create a case that is weaker and inferior to an aluminum case.....
I was thinking (in the distant future) of a lightweight, hot rod, SWB. 25 pounds off the case of 2500 pound car is pretty high on the tree, I agree. But if you are trying to get sub 1800 pounds, 25 pounds would be worth a lot of trouble.....

But I am starting to have an appreciation for just how much trouble it might be. I am rebuilding a 3.2SS at the moment and all I have to do is clean the case. That's it. These mag cases look like a major PITA!

I can't help but think a mag repop might sell in decent numbers to vintage racers and hard-core Rgruppe types. I'm sure you've thought it over more than I have though!
__________________
87 Coupe - The Driver
78 Backdate - The Project http://forums.pelicanparts.com/porsche-911-technical-forum/979976-project-heavy-metal-all-steel-classic-remastered.html
85 Coupe - The Rot Rod! AX beater
Old 03-24-2019, 03:48 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
Join Date: Jan 2018
Posts: 70
Quote:
Originally Posted by Jonny042 View Post
Too bad nobody is making new mag cases

Next project maybe?
Are you really sure about that??? link
Old 03-24-2019, 11:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
Jonny042's Avatar
 
Join Date: Aug 2010
Location: Thunder Bay, ON/Grand Portage, MN
Posts: 1,986
Garage
Quote:
Originally Posted by deftom View Post
Are you really sure about that??? link
The Pelican website is quite unreliable in that regard. The case is discontinued, if you check other online retailers.
__________________
87 Coupe - The Driver
78 Backdate - The Project http://forums.pelicanparts.com/porsche-911-technical-forum/979976-project-heavy-metal-all-steel-classic-remastered.html
85 Coupe - The Rot Rod! AX beater
Old 03-25-2019, 03:29 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
Join Date: Jan 2018
Posts: 70
Well, they recently reduced the price... so I guess they have it
I'm curious what it looks like! Is it made off agnesium??? etc etc
Old 03-25-2019, 03:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
Join Date: Apr 2016
Posts: 964
They most likely have a few laying around in Germany but historically Porsche has been pretty lousy about stocking many of their cases, which is why I started making them. Also the tooling for these cases is either gone or unusable so there is a finite supply of the genuine article.
__________________
Current: 1970 914-6 conversion 2.7, 1973 T, 1975 930 Turbo Targa, 1978 928 Race car, 6.57L, 1983 911SC, 1987 928S4 5 speed, 2002 911 Targa, 2007 997TT, 2009 997TT, 2004 40th Anniversary Carrera, Mclaren 570S and 12C

Only reproduction 3.6 cases on the planet, coming soon www.taorminaracingdesigns.com
Old 03-25-2019, 08:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
Join Date: Jan 2018
Posts: 70
Making like really making??? Have you got picture??? And a price??

I'm curious
Old 03-25-2019, 11:57 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Registered User
 
Join Date: Apr 2016
Posts: 964
^Which is why I have a link in my signature, please check it out, everything you want to know is on there.
__________________
Current: 1970 914-6 conversion 2.7, 1973 T, 1975 930 Turbo Targa, 1978 928 Race car, 6.57L, 1983 911SC, 1987 928S4 5 speed, 2002 911 Targa, 2007 997TT, 2009 997TT, 2004 40th Anniversary Carrera, Mclaren 570S and 12C

Only reproduction 3.6 cases on the planet, coming soon www.taorminaracingdesigns.com
Old 03-25-2019, 12:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
cmcfaul's Avatar
 
Join Date: Feb 2003
Posts: 1,422
Garage
Send a message via AIM to cmcfaul Send a message via Yahoo to cmcfaul Send a message via Skype™ to cmcfaul
There is a copper gasket that goes over the mating surface. Could JB weld under it to help support the gasket. May leak a little but probably not. Had case savers on my 7r case with similar results to yours. Was fine. Problem with all magnesium cases is that they get brittle with heat cycles and age.

Chris
Old 03-25-2019, 01:05 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered User
 
Join Date: Jan 2018
Posts: 70
Very nice ! You just have to do a 2.7 case and you will have lost of customers around the world...
As lot's of people like me would be interested in something stronger but for a stock engine
Old 03-25-2019, 01:22 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Rosco_NZ
 
Join Date: Aug 2017
Location: Melbourne, Australia
Posts: 45
Garage
Send a message via Skype™ to Rosco_NZ
Please enlighten me .. what’s wrong with the Case Saver installation in these cases ... about to embark on a similar project .. seeking good info
Old 03-26-2019, 07:06 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Registered User
 
cmcfaul's Avatar
 
Join Date: Feb 2003
Posts: 1,422
Garage
Send a message via AIM to cmcfaul Send a message via Yahoo to cmcfaul Send a message via Skype™ to cmcfaul
Nothing wrong with them. Nice upgrade. These seem to not have been installed correctly.

Chris

Last edited by cmcfaul; 03-27-2019 at 06:00 AM..
Old 03-27-2019, 03:45 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Registered User
 
Join Date: Mar 2019
Posts: 363
Minimum Meat at Spigots with 14x2 case savers
Old 03-27-2019, 05:56 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Registered User
 
Join Date: Oct 2016
Location: Kansas
Posts: 1,150
Quote:
Originally Posted by Rosco_NZ View Post
Please enlighten me .. what’s wrong with the Case Saver installation in these cases ... about to embark on a similar project .. seeking good info
I believe it's how close the hole goes right up against the edge of where the pistons would be. The hole on the top right of the pic is VERY close to the edge. It almost looks like some of the inner cylinder wall is missing.

When putting the heads back on, you aren't going to be able to seal it up very good an most likely oil will leak around that hole.

While the inserts themselves look fine... it's how close to the edge the holes are.
__________________
1987 Porsche 911 Carrera Coupe
Old 03-27-2019, 07:48 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
Registered User
 
cmcfaul's Avatar
 
Join Date: Feb 2003
Posts: 1,422
Garage
Send a message via AIM to cmcfaul Send a message via Yahoo to cmcfaul Send a message via Skype™ to cmcfaul
The case savers are not inserted all the way. A copper gasket goes over edges where the holes were drilled. Should be fine but not ideal.

Chris
Old 03-27-2019, 09:13 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 11:19 AM.


 
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.