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Is this a 20% RPM reduction pulley, and does it require grinding down the timing boss (like the Mantis UD pulley)?
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2006 CS Tip (Daily Driver & Part-time Track Toy)
2005 Ford Expedition (to haul the CS)
2006 Lexus RX400h (wifey's)
Gone, but not forgotten: 2002 WRX, 2004 MINI
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
2006 CS Tip (Daily Driver & Part-time Track Toy)
2005 Ford Expedition (to haul the CS)
2006 Lexus RX400h (wifey's)
Gone, but not forgotten: 2002 WRX, 2004 MINI
Is this a 20% RPM reduction pulley, and does it require grinding down the timing boss (like the Mantis UD pulley)?
It's a 16% underdrive, and yes, you do have to grind down the boss. It's a real PITA. I'll try to post a description of the job later this weekend (I put in a BBI underdrive pulley last weekend).