6th Gear grind
 

Has anybody with a 6 speed 370 experienced this? Mine started grinding 2 days ago about 75% of the time I put it in 6th gear? The car has 3k miles on it:(

No grinding
 

I have a '09 Sports w/ the 6 speed and have not had an issue w/ grinding in the 16,xxx miles I've put on the car. It is a little stiff going into 2nd when cold, but fine when warmed up. I don't baby the car, but I do try to be positive w/ my shifts and be kind to the trans. Not saying you aren't, just that some folks abuse their transmissions and then wonder why the synchros are shot. Some have reported grinding in 5th and 6th (especially at high speed-5th to 6th). The ones w/ the grind had their transmissions replaced under warranty. Time to go the dealer. Good luck.

Yea I guess it may be going to the dealer next week. I do not baby this car but I have put alot more harder miles on plenty other cars and never had a problem.

make sure your clutch was installed and the pedal adjusted properly. it can cause the your trans to grind when you shift.

Wouldn't it grind in the lower gears also if that's the case?

i grind into fif gear about 20% of the time

It only grinds in 5th, I think if it were a clutch issue it would do it in more than that one gear. I'm gonna drive it a little longer bc I'm gonna look like a retard if I get to the dealer and it doesn't grind but like once of twice if at all.

usually thats the case, but my buddy had a transmission that grinded 5th because the shift fork was a little bent. so it could be that as well.

Strange...
I've heard of 5th gear grinding but not 6th...

Ouch. Sounds like what I went through just recently. Here's my thread: http://www.the370z.com/engine-drivet...nsmission.html. I hope this will help you.

Well oddly it has stopped grinding the past few days lol. Maybe it'll just all go to hell soon.

I noticed that I usually drive1-2-3-4-6 gear, if I go from 5-6 then there is no grinding.

My 6th gear synchro was failing and I had the whole transmission replaced under warranty. This is most likely your problem, they should take care of it for you.

I had one tech blame it on shifting from 4th to 6th since it was more prevalent in that situation, but it shouldn't grind regardless. I pushed the issue with someone that actually could make decisions and it was handled. Took about a week.

I had the exact same problem. Two dealers refused to warranty my transmission because they said that I caused it by skipping from 4th to 6th. I have been driving manual transmission cars for over 20 years and have always shifted the same way. The third dealer I went to replaced it no problem.
This seems to be a problem that is popping up more and more. I now have a issue with the new trans. 2nd to 3rd grinds at low rpm. I hope this isn't a problem that I have to deal with for the life of the car.

2 to 3 happened to my boy DaineZ couple weeks ago..
he had to pay the dealer though it wasn't through warranty... :shakes head: