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Cracked motor mount???

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Well as I was changing the oil in my 09 today getting ready for this weekend I noticed 2 things. First the one of the mounts on my Pro-Circuit Ti4 R is cracked. I can deal with this because it's titanium and well thats what it does. The second and most disturbing thing I noticed was the front lower motor mount (the one closest to the skid plate mount) is cracked also. The crack is on the top of the mount and it doesn't seem to go all the way threw. The motor was rebuilt 13 hours ago and I suspect maybe we over tightned the bolt. I know of very few aluminum welders around my area and really don't want to tear it down right away. Is this something that's cause for concern and needs to be addressed right away or can it be fixed with JB weld or like products?

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cracked motor mounts most of the time are not due to over tightening but rather due to not enough torque and the resulting excessive vibration from the engine is what causes the crack..

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