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931Owner
Joined: 14 Feb 2009 Posts: 352 Location: Chicago NW Suburbs
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Posted: Mon Mar 02, 2009 12:18 pm Post subject: 1980 931 - dogleg 5 speed sloppy shifting |
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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
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Smoothie
Joined: 01 Jan 2003 Posts: 8032 Location: DE (the one near MD, PA, NJ)
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Posted: Mon Mar 02, 2009 2:22 pm Post subject: |
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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 |
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poorsha924
Joined: 13 Nov 2007 Posts: 143 Location: Kansas City Mo
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Posted: Fri Apr 03, 2009 4:10 am Post subject: sloppy snailshell |
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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 |
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ic932
Joined: 11 Feb 2005 Posts: 1104 Location: UK
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Posted: Fri Apr 03, 2009 8:07 am Post subject: |
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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... |
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Cedric
Joined: 27 Aug 2004 Posts: 2608 Location: Sweden
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Posted: Sat Apr 04, 2009 1:36 am Post subject: |
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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. _________________ 1980 924 Turbo
www.instagram.com/garagecedric/ |
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ideola
Joined: 01 Oct 2004 Posts: 15548 Location: Spring Lake MI
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Posted: Sat Apr 04, 2009 3:47 am Post subject: |
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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. _________________ erstwhile owner of just about every 924 variant ever made |
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Paul
Joined: 02 Nov 2002 Posts: 9491 Location: Southeast Wisconsin
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Posted: Sat Apr 04, 2009 9:30 am Post subject: |
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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
Porsche: It's not driving, it's therapy. |
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931Owner
Joined: 14 Feb 2009 Posts: 352 Location: Chicago NW Suburbs
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Posted: Tue Apr 21, 2009 6:16 am Post subject: |
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Cédric 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. |
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931Owner
Joined: 14 Feb 2009 Posts: 352 Location: Chicago NW Suburbs
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Posted: Tue Apr 21, 2009 6:18 am Post subject: |
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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? |
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924RACR
Joined: 29 Jul 2001 Posts: 8803 Location: Royal Oak, MI, USA
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Posted: Tue Apr 21, 2009 8:37 am Post subject: |
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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 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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931Owner
Joined: 14 Feb 2009 Posts: 352 Location: Chicago NW Suburbs
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Posted: Tue Apr 21, 2009 12:11 pm Post subject: |
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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 |
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Cedric
Joined: 27 Aug 2004 Posts: 2608 Location: Sweden
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Posted: Tue Apr 21, 2009 11:11 pm Post subject: |
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931Owner wrote: | Cédric 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.. _________________ 1980 924 Turbo
www.instagram.com/garagecedric/ |
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Vince Ponz
Joined: 02 Nov 2002 Posts: 3581 Location: Florida
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Posted: Wed Apr 22, 2009 12:12 am Post subject: |
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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 |
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Ron Henderson
Joined: 06 Jan 2009 Posts: 21 Location: San Clemente, CA
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Posted: Wed May 20, 2009 1:46 pm Post subject: |
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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 |
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patand
Joined: 12 Jan 2007 Posts: 91 Location: Sweden
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Posted: Wed May 20, 2009 4:02 pm Post subject: |
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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 |
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