| View previous topic :: View next topic |
| Author |
Message |
Bockscar
Joined: 16 Nov 2010
Posts: 392
Location: Sandy, Oregon
|
 Posted: Mon Apr 18, 2016 10:53 am Post subject: Snailshell trans 2nd gear grinding |
 |
|
It's a 1979 snailshell with < 70k miles on it. Just replaced the shift coupling and put new trans oil in it. Took it for a drive around the block and 2nd gear grinds like nobody's business. I found it difficult getting into 1st gear, but it didn't grind like 2nd gear did.
Is this a tell-tale sign that the trans is a goner?
_________________
Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
| Back to top |
|
 |
morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
|
| Posted: Mon Apr 18, 2016 4:02 pm Post subject: |
|
|
maybe you installed the coupling wrongly?
_________________
Supercharger and EFI kits
https://www.the924.com |
|
| Back to top |
|
|
Cedric
Joined: 27 Aug 2004
Posts: 2809
Location: Sweden
|
| Posted: Mon Apr 18, 2016 7:27 pm Post subject: |
|
|
What oil did you put in? It can make a significant difference.
_________________
1980 924 Turbo
www.instagram.com/garagecedric/ |
|
| Back to top |
|
|
kevingross
Joined: 15 Apr 2015
Posts: 35
Location: Stow, MA, USA
|
|
| Back to top |
|
|
Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
|
| Posted: Tue Apr 19, 2016 5:22 am Post subject: |
|
|
+1 to above. Shift extra deliberately, making sure you aren't getting a piece of reverse on your way to second.
Also, what is the condition of the clutch pedal mechanism and clutch hydraulics? Are you touching the floor with the clutch pedal between shifts?
_________________
Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
|
|
| Back to top |
|
|
Bockscar
Joined: 16 Nov 2010
Posts: 392
Location: Sandy, Oregon
|
| Posted: Tue Apr 19, 2016 6:10 am Post subject: |
|
|
| Rasta Monsta wrote: | +1 to above. Shift extra deliberately, making sure you aren't getting a piece of reverse on your way to second.
Also, what is the condition of the clutch pedal mechanism and clutch hydraulics? Are you touching the floor with the clutch pedal between shifts? |
I'm afraid I'd bust it if I shifted deliberately..
The clutch is a cable (non turbo) and the pedal squeaks a bit. Is the cable adjustable?
_________________
Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
| Back to top |
|
|
Bockscar
Joined: 16 Nov 2010
Posts: 392
Location: Sandy, Oregon
|
| Posted: Tue Apr 19, 2016 6:11 am Post subject: |
|
|
Update: Went for a drive. I press the clutch to the floor and if I'm careful, I can shift from 1st to 2nd without grinding. However, shifting from 2nd to 1st is impossible without grinding, even at stops.
_________________
Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
| Back to top |
|
|
kevingross
Joined: 15 Apr 2015
Posts: 35
Location: Stow, MA, USA
|
| Posted: Wed Apr 20, 2016 1:53 am Post subject: |
|
|
Brian, if the grinding is an issue only when selecting second gear, the problem is almost certainly due to a severely worn synchro for that gear.
Let me know if you need help with a rebuild.
_________________
Kevin
Catellus Engineering, Inc.
http://www.catellusengineering.com/
catelluseng@gmail.com |
|
| Back to top |
|
|
Bockscar
Joined: 16 Nov 2010
Posts: 392
Location: Sandy, Oregon
|
| Posted: Wed Apr 20, 2016 12:07 pm Post subject: |
|
|
| kevingross wrote: | Brian, if the grinding is an issue only when selecting second gear, the problem is almost certainly due to a severely worn synchro for that gear.
Let me know if you need help with a rebuild. |
I was mistaken with my initial observation - it grinds when shifting into 1st gear at any speed other than stopped.
_________________
Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
| Back to top |
|
|
Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
|
| Posted: Wed Apr 20, 2016 12:51 pm Post subject: |
|
|
I've never put it in first any other time...
_________________
Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
|
|
| Back to top |
|
|
Bockscar
Joined: 16 Nov 2010
Posts: 392
Location: Sandy, Oregon
|
| Posted: Wed Apr 20, 2016 1:37 pm Post subject: |
|
|
| Rasta Monsta wrote: | | I've never put it in first any other time... |
Ah, ok fair enough. I occasionally shift my cars into 1st when I'm coasting < 5 mph to a stop sign or light.
2nd gear lugs really hard when I shift above like 10 - 15 mph. I know the engine is running super rich right now so that might be why.
I'd really like for this whole grinding thing be a case of "User Error". I can't test drive it much because the tires are shot and I'm having trouble sourcing new ones.
_________________
Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
| Back to top |
|
|
Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
|
| Posted: Wed Apr 20, 2016 1:39 pm Post subject: |
|
|
So is the clutch cable adjusted to spec?
_________________
Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
|
|
| Back to top |
|
|
Bockscar
Joined: 16 Nov 2010
Posts: 392
Location: Sandy, Oregon
|
| Posted: Wed Apr 20, 2016 1:45 pm Post subject: |
|
|
| Rasta Monsta wrote: | | So is the clutch cable adjusted to spec? |
Unsure - haven't checked.
I do know that the shift bushing/coupling was replaced and is installed correctly and I replaced the gear oil with Sta-Lube GL5. First time I drove the thing was last weekend.
_________________
Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
924 FAQ (Technical)
