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The BMW Range
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E46
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<blockquote data-quote="xcrave" data-source="post: 572617" data-attributes="member: 21738"><p>This one i have 1st hand experience... </p><p></p><p>But not on your engine (mine is m52) ... The Cricket/cengkerik sound is from all the Pulley and Tensioner Pulley...</p><p></p><p>Why did it resurface after 2000km?</p><p></p><p>Answer was i use an poor imitation pulley on my Drive Belt (i only found out after comparing side by side with original lemfroder pulleys)... while the Tensioner is from original Lemfroder... end up now i change all to Lemfroder ... a friend is using Febi and TRW and its good too... if you always rev past 3000 RPM expect the wear to be faster... only way to battle this is to always "wet" the bearings with the proper grease after every oil change... but that involve a lot of work so just let it wear and buy a new one its not that expansive now...</p><p></p><p>Another way to sure ruin the pulley bearings are sudden cooling... usually from washing the engine while its on the optimum temperature... if you want to wash the engine please allow the engine to rest at least 6 Hours (according to a reputable mechanic).</p><p></p><p>Do change the Tensioner pulley including the tensioner not just the pulley, when the tensioner is not doing its job anymore... it will not help much on keeping the belt in constant tension which in turn gave uneven pressure to the whole system...</p><p></p><p>This is my own experience and advice from Mech... im sure the other sifu can point to much better explanation...</p></blockquote><p></p>
[QUOTE="xcrave, post: 572617, member: 21738"] This one i have 1st hand experience... But not on your engine (mine is m52) ... The Cricket/cengkerik sound is from all the Pulley and Tensioner Pulley... Why did it resurface after 2000km? Answer was i use an poor imitation pulley on my Drive Belt (i only found out after comparing side by side with original lemfroder pulleys)... while the Tensioner is from original Lemfroder... end up now i change all to Lemfroder ... a friend is using Febi and TRW and its good too... if you always rev past 3000 RPM expect the wear to be faster... only way to battle this is to always "wet" the bearings with the proper grease after every oil change... but that involve a lot of work so just let it wear and buy a new one its not that expansive now... Another way to sure ruin the pulley bearings are sudden cooling... usually from washing the engine while its on the optimum temperature... if you want to wash the engine please allow the engine to rest at least 6 Hours (according to a reputable mechanic). Do change the Tensioner pulley including the tensioner not just the pulley, when the tensioner is not doing its job anymore... it will not help much on keeping the belt in constant tension which in turn gave uneven pressure to the whole system... This is my own experience and advice from Mech... im sure the other sifu can point to much better explanation... [/QUOTE]
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