17' manual transmission noise - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Imrac · 04-14-2017, 06:04 PM

My guess is you are sitting at a light, the car is out of gear and your foot off the clutch.

The light Turns green, you push the clutch in, and shift into first.

You hear a clunk noise and feel the shifter move.

This is normal

When your transmission is out of gear and your clutch is engaged, the input shaft of the tranny is spinning with your engine and flywheel. As @Ultramaroon stated, the input shaft has enough rotating mass that it will continue to rotate for a short duration after your push the clutch in. That rotation will torque the synchro and gear when you select a gear and create a noise and feeling you described.

Now, if you push the clutch in and wait a couple of seconds (maybe 3) the input shaft will have stopped spinning and you won't get that anymore.

If you have driven hondas or other FWD vehicles in the past that have cable linkages or other longer/more complicated linkages, the play in the system may have isolated you from that noise and feeling before.

Tokay444 · 04-14-2017, 06:05 PM

I'm still trying to figure out how he got a 17' transmission in there.
That's longer than the car.

humfrz · 04-15-2017, 03:49 AM

Quote:

Originally Posted by Tokay444

I'm still trying to figure out how he got a 17' transmission in there.
That's longer than the car.

....... get over it!

humfrz

04-14-2017, 06:04 PM	#15
Imrac Senior Member Join Date: Dec 2012 Drives: 13 SWP BRZ Prem Location: Evergreen State Posts: 301 Thanks: 98 Thanked 159 Times in 91 Posts Mentioned: 5 Post(s)	My guess is you are sitting at a light, the car is out of gear and your foot off the clutch. The light Turns green, you push the clutch in, and shift into first. You hear a clunk noise and feel the shifter move. This is normal When your transmission is out of gear and your clutch is engaged, the input shaft of the tranny is spinning with your engine and flywheel. As @Ultramaroon stated, the input shaft has enough rotating mass that it will continue to rotate for a short duration after your push the clutch in. That rotation will torque the synchro and gear when you select a gear and create a noise and feeling you described. Now, if you push the clutch in and wait a couple of seconds (maybe 3) the input shaft will have stopped spinning and you won't get that anymore. If you have driven hondas or other FWD vehicles in the past that have cable linkages or other longer/more complicated linkages, the play in the system may have isolated you from that noise and feeling before. __________________ JDL UEL Headers, Nameless Res&Cat Over&Front, Invidia Q300 Catback, AVO Dry Panel Filter, Custom ECUTek Tune by DriftOffice 191WHP/151 ft-lb on 92

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04-14-2017, 06:05 PM	#16
Tokay444 Anti stance. Join Date: Feb 2016 Drives: 17 White 860. RCE Tarmac 2. RE-71RS Location: Not Canada Posts: 1,756 Thanks: 939 Thanked 1,026 Times in 582 Posts Mentioned: 10 Post(s)	I'm still trying to figure out how he got a 17' transmission in there. That's longer than the car.

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