Spidey 993

I am looking into a 993TT to buy, and the only complaint on the car is that is when in 2nd gear on a rare occasion, it slips out of gear. I don't know much other than what I just wrote and have done some searching.

I'm trying to understand the list of things it could be, including cost to have it fixed?

justin993

I've heard 2nd gear sincros on the 993tt can be an issue to look out for, but not sure if that will cause the pop-out.
I know 996tt has a well documented 2nd gear pop-out issue

deekay911

the synchro shouldn't cause it to pop out of gear. One thing's almost certain - if it gets worse or you want to fix it, it's a gearbox rebuild. Can't imagine that being less than 5k.

Viperbob1

If no internal damage this may help.

http://www.gboxweb.com/detent.html

Most likely common wear issue on the 2nd gear dogteeth where they contact the slider.

justin993

I didn't think the synchro would cause the pop out, but I have heard that 2nd gear synchro is something that can be an issue on twin turbos.

CalvinC4S

2nd gear dogteeth as Bob said. Popping out of gear is a sign it is time to plan a rebuild.

Spidey 993

Thanks guys for the root cause.

ViperBob, how much for the rebuild assuming I have a independent shop doing the repair? I got 0, I mean zero skills.

Thanks -
Tony

aircooled

Hey Tony, Check Viper Bob's link to Gbox---they are located in Boulder!

Spidey 993

Whoops, yes the GBox fix seems like a good solution and they are right down the road. However the part seems to be for a 996. Can this be used for a 993TT?

chris walrod

No it wont fit as this detent retrofit is for the G96 box, not the G64(G50)

chris walrod

Worn syncro or bent mainshaft are typical causes.

Nollie

Just to throw my 2 cents in here. I'd come out of second gear every so often, during hard breaking or cornering (a PITA during autocross...). I took my box to Steve and had him go through it. 1st & 2nd operating sleeve and worn syncro were my issues. Once back together with all the steel goodies I haven't had an issue since.