Broken Motor Mount
- Thread starter mikeh
- Start date
stainlesscycle
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that sounds strange - both were broken? i would think the head would break first - is your frame tweaked from a big hit? or does your motor vibrate alot??
wasp4banger
New member
Broken mounts
Had exactly this problem on my 06 EC300. First thing to check is that all of the other engine mounts are secure and the bolts are tight.
I released all of mine to see how well the motor sat in the frame, if you have more than say .2mm or 8 thou of an inch gap between the motor and the frame, then get this gap shimmed to within this tolerance, otherwise trying to pinch the motor into the frame will distort the frame in induce stress.
The aluminium mounts are likely to fail first as aluminium is far more prone to work hardening.
Vibration may be a part of the cause also, do you get a lot of vibration up through the bars? I had my flywheel balanced up, which helped with the vibes a lot.
Had exactly this problem on my 06 EC300. First thing to check is that all of the other engine mounts are secure and the bolts are tight.
I released all of mine to see how well the motor sat in the frame, if you have more than say .2mm or 8 thou of an inch gap between the motor and the frame, then get this gap shimmed to within this tolerance, otherwise trying to pinch the motor into the frame will distort the frame in induce stress.
The aluminium mounts are likely to fail first as aluminium is far more prone to work hardening.
Vibration may be a part of the cause also, do you get a lot of vibration up through the bars? I had my flywheel balanced up, which helped with the vibes a lot.
Thanks for the replies, yes both were broke i have checked the motor mounts and the swingarm mounts as well they were tight. I do have a bit of viberation but not more than usual. I think were i went wrong is i don't ride track but did so this last week due to an enduro being cancelled. i think with my settings were to soft and i was hitting pretty hard so maybe that is why..
