superchargedman

My grind going 1-2 at about 5k rpm has become a bit more frequent, occurring 1-2 times a day. I took it in, and the dealer drained the tranny fluid for analysis. Maybe a bit more clutch wear appearance at a macro view, but they're going to have an expert look at it next week. So far, no grinds driving home. The differential diagnosis could include a bad clutch that isn't disengaging or a bad synchro. I'll keep you updated. The head of services was excellent in going over his thoughts and plan with me.

Bardman

Sub'd.

kyrocks

I had similar grind in 1-2 and R with clunking. My transmission was replaced and it is perfect now.

superchargedman

Good to know. Thanks!

iheart9k

Subscribed, I've had 2 grinds myself and I've been babying my shifts since I am still in break-in.

user1029

Granny shifting, not double-clutching like you should

(which actually would get rid of syncro grinds)

hmkrpa

I have same issue with my spyder... just brought the car in today to dealer and they replicated it... Let's see what happens

superchargedman

The analysis of the fluid was normal. The specialist thought it was break in, but I'm at 2600km. I didn't notice it for 1.5 days of driving, but I've had to park it until I return back in a couple of weeks from Toronto.

lumber

I had it on my spyder for first 500 miles. It went away and I haven't had the grind for 3000 miles.
Dont have it on either of my gt4 at all.

hccyong

I had a few 1-2 grinds too, all at high RPM (around 7000) but when not at full throttle. I had my oil analyzed, and it was fine, with a bit extra copper that they thought was acceptable and is probably from the syncros. It hasn't shown itself in the last 500+ miles, but the final few millimeters going into 2nd just isn't that smooth at times for me. I'd be interested to see what is discovered in your case.

digitalrurouni

Ditto I had the grind especially when cold between 1st and 2nd and even when warm at high rpms. I didn't really pay attention to keeping revs low etc or break in periods. But it sorted itself out in less than 500 miles. I exercise the engine with varying rpm loads once the temps for the oil are above 190F. I never red line it nor do I floor it or put excessive engine load and am super smooth with my inputs. Grinding gone and gearbox is like butter!!! My car is at 1700 miles on the clock.

Jimmy-D

I only get a slight grind between 1 and 2nd on cold engine. After she warms up not an issue. But I even remember on my 991 GT3 that when engine was cold the PDK-S was sluggish and had slight hesitation between 1 and 2nd also

superchargedman

The odd thing is that mine did the grind both cold and warm. In fact more so when warm.

DeerHunter

Mine is like this too. I just double-clutch when shifting first to second for the first few blocks.

taibo

cross-posting from 987/981 sub-forum - no one seems to care about gear grinds over there!

**************

i took the spyder out for a long drive today.... heavenly, now that i'm able to take that sweet 3.8 up to redline. oh my god!!!

i had noticed the 1-2 gear grind on a few occasions previously. i had thought it was user error, since i get the same grind intermittently on my s2000. but with all the postings on it being a porsche problem i was beginning to believe it was.

the grind occurred a few of times today. the second time i was very mindful of my shift. i think it happens when i'm either shifting into second coming out of a turn or when not pulling the shifter. the centripetal force of turning and acceleration at a relatively low speed seems to fool my hand muscle memory into thinking i've applied enough force to execute a successful second gear shift. as a result, my clutch foot starts to let up on the pedal prematurely.

once i figured this out, i was extra aware when making the second gear shift and could feel when it was about to grind, but by applying a little extra force to the shift **** (to complete the second gear shift) i was able to avoid the grind.

i had always thought the s2000 grind was the fault of the tranny. it happened on all three of my s2k's - two MY2000s and a MY2003. it wasn't until i experienced it on the spyder that i suspected it was user error. the failure modes on the s2k was very similar - first to second gear shifts accelerating out of a turn and sometimes on slow acceleration.

again i think its a premature clutch release thats the culprit in these two cases.

embarrassing that ii might be the failure point, but pretty sure this is the case.
my theory anyway. thoughts?