2nd gear grind =/

elmz · 11-12-2009, 11:13 AM

Has anyone else experienced 2nd gear grinds during hard accelerations? I just hit 1200 miles yesterday so I decided to do some hard accelerations. And on both occasions it grinded when engaging into 2nd gear. Mind you I've driven manuals all my life and the clutch was fully depressed, I made sure of it on my 2nd attempt. And the car was not cold, I had driven over 20 miles when I did this. The only thing I can think of is I had the S mode on at the time, which I don't think should cause this but I have not tried the latter. I will try this again with S mode off and see what happens. I also previously owned a 2005 350Z and this was often discussed in forums. Luckily my 350 was ok. I was under the impression that the 370 had a different tranny. I know some of you might say to give it a few more miles which is sound advice, but it shouldn't do this. Either way I will wait until 2k and if it still grinds I'm taking it to the dealer.

6MT · 11-12-2009, 12:48 PM

Quote:

Originally Posted by elmz

Has anyone else experienced 2nd gear grinds during hard accelerations? I just hit 1200 miles yesterday so I decided to do some hard accelerations. And on both occasions it grinded when engaging into 2nd gear. Mind you I've driven manuals all my life and the clutch was fully depressed, I made sure of it on my 2nd attempt. And the car was not cold, I had driven over 20 miles when I did this. The only thing I can think of is I had the S mode on at the time, which I don't think should cause this but I have not tried the latter. I will try this again with S mode off and see what happens. I also previously owned a 2005 350Z and this was often discussed in forums. Luckily my 350 was ok. I was under the impression that the 370 had a different tranny. I know some of you might say to give it a few more miles which is sound advice, but it shouldn't do this. Either way I will wait until 2k and if it still grinds I'm taking it to the dealer.

No issues with mine (5000+ kms)

ChrisSlicks · 11-12-2009, 01:34 PM

2nd gear can be difficult to engage on a brisk high-RPM 1-2 shift I've found. Supposedly there is now triple cone synchros on 1st and 2nd but you could have fooled me. The 350 and the G35 weren't perfect but they were a little easier on the 1-2 shift. Other than the revised synchros I think the transmission is the same as it was so I'm not sure what the real issue is.

6MT · 11-12-2009, 03:38 PM

Quote:

Originally Posted by ChrisSlicks

2nd gear can be difficult to engage on a brisk high-RPM 1-2 shift I've found. Supposedly there is now triple cone synchros on 1st and 2nd but you could have fooled me. The 350 and the G35 weren't perfect but they were a little easier on the 1-2 shift. Other than the revised synchros I think the transmission is the same as it was so I'm not sure what the real issue is.

Funny, I found the 2 to 3 shift troublesome.

jmtt90 · 11-12-2009, 03:41 PM

I have this same problem, but i usually just dismiss it as driver error. I have only been driving manual for about 2 years and coming from a jeep wrangler 5 speed was insane

RCZ · 11-12-2009, 04:11 PM

have you been "powershifting"

GTRFAN · 11-12-2009, 04:30 PM

Mine is pretty smooth but it could be smoother. I find it ok at quick shifts but a bit clunky at slower, in traffic shifts. I think the oil plays a bit part and will be opting for flush and replacement at the 10,000km service in Jan.

What trans oil do you run RCZ?

TX_370 · 11-12-2009, 04:40 PM

Quote:

Originally Posted by GTRFAN

Mine is pretty smooth but it could be smoother. I find it ok at quick shifts but a bit clunky at slower, in traffic shifts. I think the oil plays a bit part and will be opting for flush and replacement at the 10,000km service in Jan.

What trans oil do you run RCZ?

When I do quick shifts, it feels great. However, in traffic and slow shifting it is a little rough.

zrider · 11-13-2009, 07:40 AM

funny you mention that i was just about to post a threat about a problem im having similiar to yours but also different. my car has about 1700 miles and the other day i was stopped at a red light and the car wouldnt go into first gear. and I've been driving only manual cars for over 4 years never had a problem like this. I pressed the clutch as far as it would go and i wasnt able to put it into 1st. i was standing at a green light for literally 20 seconds because it wouldnt go into first. i thought nothing of it when something similar had happened. when i tried shifting into 5th gear it wouldnt budge again
-___- so tomorrow im getting it checked out.

ChrisSlicks · 11-13-2009, 08:39 AM

Quote:

Originally Posted by zrider

funny you mention that i was just about to post a threat about a problem im having similiar to yours but also different. my car has about 1700 miles and the other day i was stopped at a red light and the car wouldnt go into first gear. and I've been driving only manual cars for over 4 years never had a problem like this. I pressed the clutch as far as it would go and i wasnt able to put it into 1st. i was standing at a green light for literally 20 seconds because it wouldnt go into first. i thought nothing of it when something similar had happened. when i tried shifting into 5th gear it wouldnt budge again
-___- so tomorrow im getting it checked out.

If it felt like a brick wall trying shift into first (no grind) then this just means that you had the clutch held in for too long before trying to put it into gear. If you hold the clutch in the input shaft stops spinning which can make it difficult to select a gear. Typically all you have to do is take your foot off the clutch and leave the transmission in N and put you foot back on the clutch again and it should engage no problem. If it was grinding then definitely get that checked out.

lovethe370z · 11-13-2009, 08:55 AM

Quote:

Originally Posted by ChrisSlicks

If it felt like a brick wall trying shift into first (no grind) then this just means that you had the clutch held in for too long before trying to put it into gear. If you hold the clutch in the input shaft stops spinning which can make it difficult to select a gear. Typically all you have to do is take your foot off the clutch and leave the transmission in N and but you foot back on the clutch again and it should engage no problem. If it was grinding then definitely get that checked out.

^^^ this is good advice.

kenchan · 11-13-2009, 09:01 AM

Just shift into 1st (no need to clutch out)while your still rolling forwards before the stop. Your collar will be then aligned when you're ready to go.

kenchan · 11-13-2009, 09:05 AM

Oh yah, for you newbs, after that, shift into N when you stop and clutch out.

vipor · 11-13-2009, 09:34 AM

2-3 is the problem that i've had, but i usually just blame me pushing the wrong angle and hitting between 3 and 5 or something. i'm not used to a gearbox like this, where you have lil bumps to get into the gate. first new car i've had that was a stick.

ChrisSlicks · 11-13-2009, 06:04 PM

Quote:

Originally Posted by kenchan

Just shift into 1st (no need to clutch out)while your still rolling forwards before the stop. Your collar will be then aligned when you're ready to go.

That is fine for a stop sign etc, but it's not a good practice to sit 5 minutes at a red light with the clutch in as it places unnecessary wear on the throw out bearing. If sitting at a long light you should be in neutral with your foot off the clutch, you can then stick it 1st when you anticipate that it's about to go green.

11-12-2009, 11:13 AM	#1 (permalink)
elmz Track Member Join Date: Feb 2009 Location: San Diego, CA Posts: 674 Drives: 2014 Porsche Boxster Rep Power: 17	2nd gear grind =/ Has anyone else experienced 2nd gear grinds during hard accelerations? I just hit 1200 miles yesterday so I decided to do some hard accelerations. And on both occasions it grinded when engaging into 2nd gear. Mind you I've driven manuals all my life and the clutch was fully depressed, I made sure of it on my 2nd attempt. And the car was not cold, I had driven over 20 miles when I did this. The only thing I can think of is I had the S mode on at the time, which I don't think should cause this but I have not tried the latter. I will try this again with S mode off and see what happens. I also previously owned a 2005 350Z and this was often discussed in forums. Luckily my 350 was ok. I was under the impression that the 370 had a different tranny. I know some of you might say to give it a few more miles which is sound advice, but it shouldn't do this. Either way I will wait until 2k and if it still grinds I'm taking it to the dealer.

11-12-2009, 04:30 PM	#7 (permalink)
GTRFAN Track Member Join Date: Dec 2008 Location: Melbourne Posts: 586 Drives: 370z Titanium 6MT Rep Power: 17	Mine is pretty smooth but it could be smoother. I find it ok at quick shifts but a bit clunky at slower, in traffic shifts. I think the oil plays a bit part and will be opting for flush and replacement at the 10,000km service in Jan. What trans oil do you run RCZ? __________________ My Zed

11-13-2009, 09:34 AM	#14 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	2-3 is the problem that i've had, but i usually just blame me pushing the wrong angle and hitting between 3 and 5 or something. i'm not used to a gearbox like this, where you have lil bumps to get into the gate. first new car i've had that was a stick. __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

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11-12-2009, 01:34 PM	#3 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	2nd gear can be difficult to engage on a brisk high-RPM 1-2 shift I've found. Supposedly there is now triple cone synchros on 1st and 2nd but you could have fooled me. The 350 and the G35 weren't perfect but they were a little easier on the 1-2 shift. Other than the revised synchros I think the transmission is the same as it was so I'm not sure what the real issue is.

11-12-2009, 03:41 PM	#5 (permalink)
jmtt90 Base Member Join Date: Aug 2009 Location: St.Amant, LA Posts: 32 Drives: MB 370z 6mt t/s Rep Power: 16	I have this same problem, but i usually just dismiss it as driver error. I have only been driving manual for about 2 years and coming from a jeep wrangler 5 speed was insane

11-12-2009, 04:11 PM	#6 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	have you been "powershifting"

11-13-2009, 07:40 AM	#9 (permalink)
zrider Base Member Join Date: Oct 2009 Location: Alexandria, VA Posts: 175 Drives: 2009 370z Black M/T Rep Power: 16	funny you mention that i was just about to post a threat about a problem im having similiar to yours but also different. my car has about 1700 miles and the other day i was stopped at a red light and the car wouldnt go into first gear. and I've been driving only manual cars for over 4 years never had a problem like this. I pressed the clutch as far as it would go and i wasnt able to put it into 1st. i was standing at a green light for literally 20 seconds because it wouldnt go into first. i thought nothing of it when something similar had happened. when i tried shifting into 5th gear it wouldnt budge again -___- so tomorrow im getting it checked out.

11-13-2009, 09:01 AM	#12 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	Just shift into 1st (no need to clutch out)while your still rolling forwards before the stop. Your collar will be then aligned when you're ready to go.

11-13-2009, 09:05 AM	#13 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	Oh yah, for you newbs, after that, shift into N when you stop and clutch out.