3-2 shift, What's broken?
Thread Starter
Staging Lane
Joined: Dec 2010
Posts: 60
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3-2 shift, What's broken? So, I'm in the process of breaking in my new engine. I was driving, with a bit of throttle, definitely not more than half. I shifted, from 3rd to 2nd gear because of the stupid stock shifter. I believe I shifted at about 4000rpms in 3rd gear, definitely not more than 5000. When I let out the clutch, my rear locked up and I got some pretty bad hop. I did not see the revs go over 6k, but I was kinda freaking out because I've never missed a shift and gone into the wrong gear before.
Now, when I try and accelerate, I get a TERRIBLE vibration above around 2000 rpms. The whole car shakes. I get the same vibration when leaving in first gear. The only way to eliminate the vibration is to keep RPMs low and very slowly let out the clutch. I discovered after a little more investigation that this vibration appears to be my driveshaft rubbing against my safety loop. Is it possible to break a poly trans mount and an engine mount? I realized that the rubbing goes away at engine decel. I don't have time to jack it up and take a look until this weekend at the earliest.
Has anyone broken anything like this by missing a shift before?
The trans was built to handle 800+hp, I have a moser 12 bolt, and the clutch is a McLeod original twin.
Now, when I try and accelerate, I get a TERRIBLE vibration above around 2000 rpms. The whole car shakes. I get the same vibration when leaving in first gear. The only way to eliminate the vibration is to keep RPMs low and very slowly let out the clutch. I discovered after a little more investigation that this vibration appears to be my driveshaft rubbing against my safety loop. Is it possible to break a poly trans mount and an engine mount? I realized that the rubbing goes away at engine decel. I don't have time to jack it up and take a look until this weekend at the earliest.
Has anyone broken anything like this by missing a shift before?
The trans was built to handle 800+hp, I have a moser 12 bolt, and the clutch is a McLeod original twin.
Last edited by nubs4ck; Aug 1, 2012 at 12:45 AM.
