RogerS Posted June 17, 2008 Report Share Posted June 17, 2008 Having had an 03 and 04 SVT Cobra I ran into issues with the idler pulleys squeeling due to the additional boost from a smaller blower pulley. Speaking with Ford Techs about the issue it appeared that the stock bearings within the pulley were not up to the additional "spin" output of the increased boost. At that time there were a few companies who manufactured a complete set of "custom" pulleys. Unlike the factory pulleys they were rebuildable. I liked that idea. They featured press out bearings with "c" clips as retailners. Made of pure billet aluminum they were lighter, durable and functional. Not to mention very cool looking. I have developed the same "squeel" in one of my idlers and so has another member running the Whipple. Because of my past experience I have begun an R&D project relating to this issue with a prominent aftermarket machiene shop and Ford Modular specialist. Currently we are looking at the pulley replacement. It would intale the driver upper idler, tensioner idler and the upper passenger idler pulleys. In addition I will be installing a tensioner brace. The tensioner brace, under high boost loads, tends to "walk" to the front of the car causing potential belt slippage and shredding. The brace all but eliminates "walk" and helps keep the belt true during high boost loads. After a few measuements and a couple of spacers I think we should have a complete package. I will keep all posted as to the progress of the project and I am excited that this will have a positive long term result in the area of durability and reliability. Roger Link to comment Share on other sites More sharing options...
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