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Need help with high rpm viberation
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<blockquote data-quote="WHITESTRIPES" data-source="post: 15589868" data-attributes="member: 143141"><p>I've searched and oddly enough came up empty. Usually I can just search and someone has already made a thread and answered my question. And I posted it here because I'm not sure if it's an engine or drivrtrain vibration. So with that out of the way....</p><p></p><p>Last winter I installed a cobra engineering M122 swap on my 03 cobra amongst other things such as a steeda tri ax shifter and aem wide band. </p><p>I had a poor email tune update so I stayed out of the throttle.</p><p>High rpm (4k +) I get a bad vibration and I can feel it most in the shifter. It rattled like crazy until I shifted. </p><p>I believe it does it in neutral when revving also. It doesn't get worse with wheel speed, only with engine speed. </p><p></p><p>The things I've tried already:</p><p>Replaced clutch and flywheel (twice)</p><p>New frpp tob/fork/pilot bearing/pivot ball</p><p>Topped diff off and torqued pinion nut </p><p>U joints are tight.</p><p>Fresh synchromesh fluid</p><p>Checked that balancer and crank pulley are running straight, all pulleys turn nice and straight.</p><p>Idles normal and no CEL </p><p>I replaced the tri ax with a mgw </p><p>Do short throws really vibrate that much?</p><p>I'm at a loss here, the trans and motor mounts look good. I should note the car drives perfect at low rpm. I've put almost 700 miles on the new spec 3+ clutch. You can feel the vibration the most in the shifter handle but also in the pedals/floor boards. </p><p>I'm going to have 04 sleeper tune it, but I need this issue fixed first. Any insight or things to look for would be awesome.</p></blockquote><p></p>
[QUOTE="WHITESTRIPES, post: 15589868, member: 143141"] I've searched and oddly enough came up empty. Usually I can just search and someone has already made a thread and answered my question. And I posted it here because I'm not sure if it's an engine or drivrtrain vibration. So with that out of the way.... Last winter I installed a cobra engineering M122 swap on my 03 cobra amongst other things such as a steeda tri ax shifter and aem wide band. I had a poor email tune update so I stayed out of the throttle. High rpm (4k +) I get a bad vibration and I can feel it most in the shifter. It rattled like crazy until I shifted. I believe it does it in neutral when revving also. It doesn't get worse with wheel speed, only with engine speed. The things I've tried already: Replaced clutch and flywheel (twice) New frpp tob/fork/pilot bearing/pivot ball Topped diff off and torqued pinion nut U joints are tight. Fresh synchromesh fluid Checked that balancer and crank pulley are running straight, all pulleys turn nice and straight. Idles normal and no CEL I replaced the tri ax with a mgw Do short throws really vibrate that much? I'm at a loss here, the trans and motor mounts look good. I should note the car drives perfect at low rpm. I've put almost 700 miles on the new spec 3+ clutch. You can feel the vibration the most in the shifter handle but also in the pedals/floor boards. I'm going to have 04 sleeper tune it, but I need this issue fixed first. Any insight or things to look for would be awesome. [/QUOTE]
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Need help with high rpm viberation
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