| 748 engine rebuild
Hello everyone, I am a new member here hoping to find information on my 748
My fist question is regarding engine whining noise. I can hear a realy high whining noise following my RPM range in nuetral or in gear, it is driving me crazy. It is soooo loud I can hardly hear my motor. I have changed my timing belts and changed the sprockets but this has not helped? Has anyone ever experienced this?
Also I can hear the bottom end of my engine crank case knocking a bit. I am going to asume I need a rebuild? Any advise would be greatly appreciated!!! thanks | 
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