Goughary

Ok - In the past year, I have replaced the clutch rollpin, new bushings in the pedal cluster, new clutch master cylinder, new slave, slave hose, fully rebuild clutch while the engine was out, and I replaced the Engine mounts with new 993 mounts.

Shifting is still notchy and clunky.

Has anyone gone through the same? My car has 72k miles, and the transmission is more or less perfect. What else can I look into as the culprit here?

dkcaims

So is mine... clutch was just done. In fact it's still in the shop troubleshooting other issues.
My tech says, it's just the nature of the beast and will always be somewhat notchy.

But it depends what you're comparing it to also. Have you driven another 964 that was not notchy?

Goughary

not another 964, bit plenty of other porsches...old and new...i can understand a little notchiness, but there has to be something in the linkage worn someplace. My larger worry is that something being worn like this causing more wear and tear on the transmission over time...my shop says it's not a problem...but clunking into a gear feels like a problem to me. I think they are trying to save me money, since imperfections are normal in an older car. But I like to keep it as new feeling as I can.

993James993

Could be your gear oil, or your shift rod, or possibly the syncros. Is this more pronounced with certain gears? I'd start with the gear oil and an inspection of the shift rod. FD Mortorsports sells the "golden rod" for around $200. It's supposed to be an easy sway and I plan to get one after updating my suspension in the next month or so.

Babalouie

Is it more stiff to come-out of gear, or more stiff to go-into gear?

Goughary

more stiff going in, but I think that would always be the case...doesnt feel like the syncros, cuz when I heal and toe, there is no problem in the synching of the gears, butt he notch is still there - feels like it's in the linkage somewhere...

Gear oil was just replaced with correct oil, so that shouldnt be it either...

Baba - I followed a bit of your fantastic rebuild - there was a part where you were changing the bushings in the tunnel - you think maybe my problem is in there?

Basically -I am going to have my shop do the work, so I'd rather be closer to hitting the nail on the head and maybe get it solved on the first try rather than fix a few more things and still have the same problem...and have to go back to them again for more. Though, they are very good and my car is happy....

doubleurx

My 964 is the smoothest tranny I have ever tried. It is smoother/less notchy than the turbo. The Turbo does have an SSK though.

Silvertarga

Check the front Ball cup (angle joint) Part 928 424 005 01, it does get worn and can cause symptoms you are experiencing

Babalouie

Quite possibly...in any case, a worn Ball Cup (that Silvertarga suggested above) would be a very possible cause.

VR6-er

I have the same issue if I try to rush the shift.

sail2fast

My shifting got much notchier when I changed the tranny fluid to Swepco. Gets better when warmed up. Previously, it had Kendall synthetic (put in by a local german motors shop). The Kendall shifted much more smoothly, particularly when cold.

I will change back to Kendall as soon as I get a chance.

SuperUser

Redline 75 - 90 NS made my 964 a lot less notchy.
https://rennlist.com/forums/964-foru...-is-magic.html

Goughary

ohhhhhhh - just had a thought - back when my rollpin broke, I had fooled around with the adjuster for the clutch travel. That may actually be part of the issue....

I have the diagram somehwere that shows where the pedal should engage - but does anyone have an easy way to adjust that hex screw? so i dont have to remove the pedal assemply....ie 'screw it all the way in and back up x amount of turns would be a good place to start'...that kind of thing

tbennett017

And just checking in on the obvious... how are your motor mounts?

Goughary

motor mounts are new in the last 400 miles...