Need help diagnosing a problem.

[Highfly]

Yeah I hear what you are saying but I just don't want to be worried about the crank any more. It's a known issue and a lot cheaper to fix before something happens (If it's not too late). The noise is coming from somewhere and I'm pretty confident it isn't external. Right now it sounds 100%. I took it up and down the back ally, but there is no way I'll take it out the way it is.

 

[Transporter]

I would check the chain case and drive shaft maybe your bearing on right side might be hooped
, your engine sounds ok in the videos.

Id have a look in chaincase too. When my pro blew its quick drive belt it felt like everything from clutch to motor to something in the track was wrecked.