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Old 04-30-2015, 11:26 AM   #3302
mit_peid
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Join Date: Nov 2012
Drives: '13 FRS MT KW SC, '05 4Runner 4WD
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I've never had a S/C belt snap, but I've had an OEM idler pulley seize on me with KW kit on. In my mind, I categorized it under "driver error" since I think it was a hard downshift into 3rd that was probably more of the root cause. Hopefully, it was a slightly defective OEM idler pulley too and replacing it resolved the issue long term for me. I thought the KW instructions on setting the tension to "21mm" wasn't too hard to follow-- never given me problems. I am curious as to whether an auto-tensioner along with a more traditional v-ribbed belt would have been a better design choice. If they do a "Rev2" of the C30 kit, these should be considerations (along with a CARB tune of course). The CARB thing has been frustrating and feels like a bait'n'switch business tactic. Hopefully they'll get the CARB settled before too long.


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