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The Terminator
Engine/Tuning
Metco Lower Pulley vs. Stock Caged Lower
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<blockquote data-quote="JrSVT" data-source="post: 14197964" data-attributes="member: 61131"><p>While there are cases of failed crank snouts due to the larger twin screws, I've also noticed that majority of the failures have been from people running aftermarket belt tensioners with the larger blowers. The aftermarket tensioners allow you to get the belt very tight and as we all know a tight belt doesn't slip...that is everyone's dream - to minimize belt slip. The problem is with the after market tensioners the belt is so tight that it adds more stress to the snout of the crank where the stock tensioner springs back and forth allowing some of that tension/stress to be absorbed through the tensioner....aftermarket tensioners reduce or eliminate the flex/springiness and all that stress has to go somewhere....the crank snout. </p><p></p><p>I would say a eaton setup with the stock tensioner and aftermarket lower pulley setup will last a LONG time. Even a twinscrew with the factory tensioner will last. Unless you have an aftermarket tensioner that you adjust to have zero belt slip, the Metco lower pulley setup will not cause your crank snout to fail.</p><p></p><p></p><p>Jr.</p></blockquote><p></p>
[QUOTE="JrSVT, post: 14197964, member: 61131"] While there are cases of failed crank snouts due to the larger twin screws, I've also noticed that majority of the failures have been from people running aftermarket belt tensioners with the larger blowers. The aftermarket tensioners allow you to get the belt very tight and as we all know a tight belt doesn't slip...that is everyone's dream - to minimize belt slip. The problem is with the after market tensioners the belt is so tight that it adds more stress to the snout of the crank where the stock tensioner springs back and forth allowing some of that tension/stress to be absorbed through the tensioner....aftermarket tensioners reduce or eliminate the flex/springiness and all that stress has to go somewhere....the crank snout. I would say a eaton setup with the stock tensioner and aftermarket lower pulley setup will last a LONG time. Even a twinscrew with the factory tensioner will last. Unless you have an aftermarket tensioner that you adjust to have zero belt slip, the Metco lower pulley setup will not cause your crank snout to fail. Jr. [/QUOTE]
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Metco Lower Pulley vs. Stock Caged Lower
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