I have finally found the solution to this odd tractor sound my lowly 4 banger makes .....

Be sure to crank the volume!

[ame]http://www.youtube.com/watch?v=N8eOTGhTpDY&feature=player_embedded[/ame]

[ame]http://www.youtube.com/watch?v=_tAavz6Kh-w&feature=player_embedded[/ame]

[ame]http://www.youtube.com/watch?v=_OvPlhWuzYM&feature=player_embedded[/ame]

Get all the details here ....

http://www.soundracer.se/?p=98

My V8 envy is finally over :D