Show full size 924Board.org
Discussion Forum of 924.org
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 Technical FAQ924 FAQ (Technical)   Technical924 Technical Section   Jump to 924.org924.org   Jump to PCA 924 Registry924 Registry

1980 931 - dogleg 5 speed sloppy shifting

 
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech.
View previous topic :: View next topic  
Author Message
931Owner  



Joined: 14 Feb 2009
Posts: 352
Location: Chicago NW Suburbs

PostPosted: Mon Mar 02, 2009 12:18 pm    Post subject: 1980 931 - dogleg 5 speed sloppy shifting Reply with quote

Hi folks

I'm new at the 931 ownership and I have a dogleg 5spd shifter.

Is this what people on the board call snailshell shifter (when I lift the shifter boot, I see two shift bars either side of the shifter lever)?

It has very sloppy shifting and I am wondering what to do to improve the shifting?

1st gear is hard to get into and a double clutch is needed or wait until a full stop to get into 1st or skip 1st altogether and use 2nd gear for takeoff.

Thanks

''
Back to top
View user's profile Send private message
Smoothie  



Joined: 01 Jan 2003
Posts: 8030
Location: DE (the one near MD, PA, NJ)

PostPosted: Mon Mar 02, 2009 2:22 pm    Post subject: Reply with quote

Yes, it's a "snailshell" and sounds like a "normal" one at that.
There's a topic on the problem in the General Discussions forum (4th sticky from top of General Discussions).
_________________
"..it's made in Germany. You know the Germans always make good stuff."


'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox
Back to top
View user's profile Send private message Visit poster's website
poorsha924  



Joined: 13 Nov 2007
Posts: 140
Location: Kansas City Mo

PostPosted: Fri Apr 03, 2009 4:10 am    Post subject: sloppy snailshell Reply with quote

Ah yes the infamous snailshell. The two rods you are refering to are the one on the right is the guide rod. the back of it has a bushing that snaps into the torque tube to keep the shifter in the correct position. on the front therer is a rubber guide the front of the rod goed into that bolts to the shifter frame ( the bolt that go thru the body ) the two front bolts this component wears out also. The rod to the left is the shift rod there is a plastic bushing that wears out. it is at the end of the shift rod The best way to check for both rods undo the rods from the shifter & check for any freepaly movement going forward & back. shoud not be any movement If there is you need to repalce ALL the bushings on both rods the bad new you have to take the exhaust off to take out the trans to take out the shift tube a lot of work That is why you should replace all three bushing you do not want to do it twice. check the Porsche factory repair manual for instruction very informative. I would also replace the pilot bearing in the crankshaft. One more FYI I run Redline 75W80 gear loil helps the trans shift smoother Hope this helps
Pooorsha 924
_________________
79 924S snailshell
audi big bore t-body
16" turbo wheels
Back to top
View user's profile Send private message Send e-mail
ic932  



Joined: 11 Feb 2005
Posts: 1104
Location: UK

PostPosted: Fri Apr 03, 2009 8:07 am    Post subject: Reply with quote

yes, unfortunatly it's fu*ked There is NO chance that the substantial original porsche bushes have worn out before the gearbox internals....forget about the "snake oil" lol.

It's not that this is a crap gearbox...the oppposite is true. Not many here have driven a 924turbo as it was intended (with a snailshell) A good box is worth as much as a complete car...
Back to top
View user's profile Send private message Send e-mail
CÚdric  



Joined: 27 Aug 2004
Posts: 1985
Location: Sweden

PostPosted: Sat Apr 04, 2009 1:36 am    Post subject: Reply with quote

I had super sloppy shifting on my 924 ┤79. The problem was that the conical screw that holds the linkage together had unscrewed itself. I bougth new bushes to replace them but the original ones was tigther than the new ones so i never did that. After i changed that screw the shifting got a LOT better..

btw, on my 931 the dog-leg box is a real gem, no gear crunshing or any other problem. Its so much cooler than the standard one . And much more compact.
_________________
┤80 924 Turbo
Back to top
View user's profile Send private message MSN Messenger
ideola  



Joined: 01 Oct 2004
Posts: 15505
Location: Woodstock IL

PostPosted: Sat Apr 04, 2009 3:47 am    Post subject: Reply with quote

And lighter. And you can get an LSD for it too. I have two of 'em

It probably would be good medicine for all snailshell equipped cars to have the entire linkage removed, cleaned up and refitted, along with a good drain and re-fill with new synthetic gear oil.
_________________
75 Fiat X1/9 | 80 US 928 | 80 US 931 '941' | 78 D-Prod Replica | 78 Poli-Form
Back to top
View user's profile Send private message
Paul  



Joined: 02 Nov 2002
Posts: 9435
Location: Southeast Wisconsin

PostPosted: Sat Apr 04, 2009 9:30 am    Post subject: Reply with quote

Even with an LSD?
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Back to top
View user's profile Send private message Send e-mail
931Owner  



Joined: 14 Feb 2009
Posts: 352
Location: Chicago NW Suburbs

PostPosted: Tue Apr 21, 2009 6:16 am    Post subject: Reply with quote

CÚdric wrote:
...the conical screw that holds the linkage together had unscrewed itself...

btw, on my 931 the dog-leg box is a real gem, no gear crunshing or any other problem. Its so much cooler than the standard one . And much more compact.


Hi Cedric
I am not sure which conical screw you are referring to... is it at the shifter or gearbox end?

Autoatlanta has a bushing kit for ~$150. The car needs a clutch as well so I may as well replace all the bushings while doing the clutch but I do want to make sure I don't miss anything else while doing it.
Back to top
View user's profile Send private message
931Owner  



Joined: 14 Feb 2009
Posts: 352
Location: Chicago NW Suburbs

PostPosted: Tue Apr 21, 2009 6:18 am    Post subject: Reply with quote

ideola wrote:
And lighter. And you can get an LSD for it too. I have two of 'em

It probably would be good medicine for all snailshell equipped cars to have the entire linkage removed, cleaned up and refitted, along with a good drain and re-fill with new synthetic gear oil.


ideola... would one of the 2 be for sale?
Back to top
View user's profile Send private message
924RACR  



Joined: 29 Jul 2001
Posts: 8321
Location: Royal Oak, MI, USA

PostPosted: Tue Apr 21, 2009 8:37 am    Post subject: Reply with quote

Autoatlanta, well, they don't exactly have the best business reputation... you can buy same better elsewhere... Pelican might be a good source for these...
_________________
Vaughan Scott
Webmeister
'79 924 #77 ITB racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype
Back to top
View user's profile Send private message Send e-mail Visit poster's website
931Owner  



Joined: 14 Feb 2009
Posts: 352
Location: Chicago NW Suburbs

PostPosted: Tue Apr 21, 2009 12:11 pm    Post subject: Reply with quote

It is funny that this is not the first time that I've read about the reputation of AutoAtlanta... thanks for the heads up.
_________________
1980 Turbo
-too many cars and too many motobikes
Back to top
View user's profile Send private message
CÚdric  



Joined: 27 Aug 2004
Posts: 1985
Location: Sweden

PostPosted: Tue Apr 21, 2009 11:11 pm    Post subject: Reply with quote

931Owner wrote:
CÚdric wrote:
...the conical screw that holds the linkage together had unscrewed itself...

btw, on my 931 the dog-leg box is a real gem, no gear crunshing or any other problem. Its so much cooler than the standard one . And much more compact.


Hi Cedric
I am not sure which conical screw you are referring to... is it at the shifter or gearbox end?

Autoatlanta has a bushing kit for ~$150. The car needs a clutch as well so I may as well replace all the bushings while doing the clutch but I do want to make sure I don't miss anything else while doing it.


Its at the gear box end.

Watch out when you buy the bushings, as i wrote above, the new ones i bougth were actually more sloppy than the old ones. Be shure to get the correct ones..
_________________
┤80 924 Turbo
Back to top
View user's profile Send private message MSN Messenger
Vince Ponz  



Joined: 02 Nov 2002
Posts: 3581
Location: Florida

PostPosted: Wed Apr 22, 2009 12:12 am    Post subject: Reply with quote

Stay away from Auto Atlanta Almighty. Bad news.

Change the bushings. Cheap fix and might be difficult but cheaper than a new tranny. I had the same problem. The rubber fell out. I had the rubber bushings replaced and no problem.

I cannot get the car into first if I am rolling. Complete stop first.
Yes you could start in second.

These are getting rare. I shift 1-3-5, 1-2-4-5, 2-5 depending on traffic. If I can avoid going to some gears I will.
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock
Back to top
View user's profile Send private message Send e-mail
Ron Henderson  



Joined: 06 Jan 2009
Posts: 21
Location: San Clemente, CA

PostPosted: Wed May 20, 2009 1:46 pm    Post subject: Reply with quote

I changed the reaction arm bushing (located near the output end of the torque tube) with a 10MM rod end (maybe it was 8MM) and welded a bolt on the torque tube. This system takes out much of the play that was part of the original design.
_________________
Ron Henderson
Kaman Industrial Technologies

951-312-1625 cell
Back to top
View user's profile Send private message
patand  



Joined: 12 Jan 2007
Posts: 91
Location: Sweden

PostPosted: Wed May 20, 2009 4:02 pm    Post subject: Reply with quote

Ron Henderson wrote:
I changed the reaction arm bushing (located near the output end of the torque tube) with a 10MM rod end (maybe it was 8MM) and welded a bolt on the torque tube. This system takes out much of the play that was part of the original design.


You mean like I have done on my car? See pictures:




_________________
www.patandracing.se
Back to top
View user's profile Send private message Send e-mail MSN Messenger
Display posts from previous:   
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech. All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group