Grinding going into second gear

Overlimit · 08-30-2017, 10:16 PM

This has happened about 3 times since I've owned the car. The last time it happened I was approaching a left turn and was in third gear. I downshifted to 2nd with SRM and the clutch fully depressed but when putting it into second gear I heard a grinding. With my foot still fully depressing the clutch and my speed now in range of 1st gear I just put it in neutral and then first. I was able to get into second gear after and didn't have any problems. Is my clutch on its way out? I bought my car at 12k miles and it is now at 20k. I don't shift aggressively and also have the rjm clutch pedal mod.

Overlimit · 08-30-2017, 11:31 PM

https://youtu.be/QHjw7U0WLOQ

At 21 seconds you can hear the grinding sound from going into 2nd gear from third gear. The second scene shows a test from flooring it in 6th gear on the freeway - no slipping here. The third scene shows flooring it from 6th gear on a hill. In the third scene the car immediately dropped below the idle rpm and didn't 'slip'.

Quicksilvers · 08-31-2017, 06:52 AM

Sounds to me like your synchronizer in 2nd gear and possibly 3rd gear is faulty. Your transmission needs to be overhauled or replaced.

Spooler · 08-31-2017, 07:45 AM

Sounds like your RJM pedal is not adjusted properly to allow the clutch to fully release sometimes.

Chuck33079 · 08-31-2017, 08:13 AM

Quote:

Originally Posted by Spooler

Sounds like your RJM pedal is not adjusted properly to allow the clutch to fully release sometimes.

It's more likely this

Quote:

Originally Posted by Quicksilvers

Sounds to me like your synchronizer in 2nd gear and possibly 3rd gear is faulty. Your transmission needs to be overhauled or replaced.

than this.

Zthirty4NISMO · 08-31-2017, 09:21 AM

I agree with the clutch pedal adjustment as a first check. Ryan is very specific in his instructions about getting it setup correctly to make sure you can get into all of the gears. If the pedal is out of adjustment, you can completely block a gear or just enough to experience what you're describing.

nis350 · 08-31-2017, 10:18 PM

For those who prefer to have a lower engagement point than the stock must adjust it properly or risk not releasing the clutch fully. Our Z's notchy transmission doesn't help either. There always seems to be a bit fraction going into 2nd.

Quote:

Originally Posted by Spooler

Sounds like your RJM pedal is not adjusted properly to allow the clutch to fully release sometimes.

08-30-2017, 10:16 PM	#1 (permalink)
Overlimit Base Member Join Date: Jun 2010 Location: 951 Posts: 151 Drives: F80 M3 Rep Power: 33	Grinding going into second gear This has happened about 3 times since I've owned the car. The last time it happened I was approaching a left turn and was in third gear. I downshifted to 2nd with SRM and the clutch fully depressed but when putting it into second gear I heard a grinding. With my foot still fully depressing the clutch and my speed now in range of 1st gear I just put it in neutral and then first. I was able to get into second gear after and didn't have any problems. Is my clutch on its way out? I bought my car at 12k miles and it is now at 20k. I don't shift aggressively and also have the rjm clutch pedal mod.

08-31-2017, 07:45 AM	#4 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,791 Drives: 2013 Nismo 370z Rep Power: 2684392	Sounds like your RJM pedal is not adjusted properly to allow the clutch to fully release sometimes. nis350 likes this.

08-31-2017, 09:21 AM	#6 (permalink)
Zthirty4NISMO Base Member Join Date: Oct 2014 Location: South Dakota Posts: 220 Drives: DRKNITE Rep Power: 11	I agree with the clutch pedal adjustment as a first check. Ryan is very specific in his instructions about getting it setup correctly to make sure you can get into all of the gears. If the pedal is out of adjustment, you can completely block a gear or just enough to experience what you're describing. __________________ 2014 370Z NISMO #0543 - Magnetic Black on Black on Black Always Dry \|\| AROSPEED \|\| Covercraft \|\| CoverKing \|\| EVO-R \|\| Fast Intentions \|\| FilterMag \|\| NISMO \|\| ONEighty \|\| Prismatic Powders \|\| RJM Performance \|\| The370Z.com \|\| Trackspec \|\| ZSPEC Design \|\| ZSPEED Performance \|\| Z1 Motorsports \|\| Panaflex Carbon Ceramic Tint

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08-30-2017, 11:31 PM	#2 (permalink)
Overlimit Base Member Join Date: Jun 2010 Location: 951 Posts: 151 Drives: F80 M3 Rep Power: 33	https://youtu.be/QHjw7U0WLOQ At 21 seconds you can hear the grinding sound from going into 2nd gear from third gear. The second scene shows a test from flooring it in 6th gear on the freeway - no slipping here. The third scene shows flooring it from 6th gear on a hill. In the third scene the car immediately dropped below the idle rpm and didn't 'slip'.

08-31-2017, 06:52 AM	#3 (permalink)
Quicksilvers A True Z Fanatic Join Date: May 2017 Location: Atlanta, GA Posts: 2,039 Drives: 2017 370z Rep Power: 25463	Sounds to me like your synchronizer in 2nd gear and possibly 3rd gear is faulty. Your transmission needs to be overhauled or replaced.