MN12 problems
Thread Starter
Teching In
Joined: Aug 2010
Posts: 19
Likes: 0
MN12 problems Ok, for starters I've got an 02 z06, stock transmission with a monster stg3 clutch. Car has 40k miles on it, about 1800-2000 on the clutch, and the trans was rebuilt at about 18k miles. Car isn't a complete monster, makes maybe 430whp or so, all the mods done right after the clutch install, roughly 5-800 miles ago.
Just recently I started getting a funky "grinding" noise from the trans/clutch area. I first noticed it sitting at a stop sign. Put the shifter in gear and as I engaged the clutch the noise came about. As I gave it a little more acceleration it went away, put it in 2nd gear, same thing. It seems worst under decel or coasting, but it doesn't do it all the time, and sometimes it's more exaggerated than others. I also couldn't get it to happen in the higher gears (4,5,6). I can feel it in the shifter, and sometimes in the clutch pedal when it's doing it the worst. It doesn't try to pop out of gear when it does it or anything, but when I pull it out of gear while it's doing it and push in the clutch it stops immediately.
Any ideas, suggestions, or comments on what I should expect? Or maybe some steps to try and isolate what the problem is?
As of recently
Just recently I started getting a funky "grinding" noise from the trans/clutch area. I first noticed it sitting at a stop sign. Put the shifter in gear and as I engaged the clutch the noise came about. As I gave it a little more acceleration it went away, put it in 2nd gear, same thing. It seems worst under decel or coasting, but it doesn't do it all the time, and sometimes it's more exaggerated than others. I also couldn't get it to happen in the higher gears (4,5,6). I can feel it in the shifter, and sometimes in the clutch pedal when it's doing it the worst. It doesn't try to pop out of gear when it does it or anything, but when I pull it out of gear while it's doing it and push in the clutch it stops immediately.
Any ideas, suggestions, or comments on what I should expect? Or maybe some steps to try and isolate what the problem is?
As of recently
Thread Starter
Teching In
Joined: Aug 2010
Posts: 19
Likes: 0
It doesn't grind putting the shifter into gear. And after further playing with it at my house, it will do it in neutral.
To better describe the noise, it sounds like a loose bolt. Similar to a loose poly lock on a rocker arm or something.
To better describe the noise, it sounds like a loose bolt. Similar to a loose poly lock on a rocker arm or something.
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