Hey i have 03 cobra 2.8 upper 4lb lower with 100 mm tension idler with the rest stock idlers I have a 77.5 gates belt been through two seems about 3 k they start to squil when I first crank it up and when it gets warm stops I notice some grey dust on bottom of about and in the idler tension pulley so must be slipping how much shorter belt u think I could go with ? 76.5 77? Should I go back with gates or gator back
Belt issue
- Thread starter urmaker45
- Start date
I just replaced my Gates with a Gatorback and still have the squealing/whining that fluctuates with the RPMs.... Very freaking annoying. It was good for a couple of trips to and from work (35 miles round trip, give or take) and then the squeal came back. Last summer I'm pretty sure I swapped it back to stockers. Just don't remember what the results were. I'm running a 2.8 RR Ultra Grip upper with 4 piece BF idlers and a 75 inch belt. What gives? OP have you verified the belt size on CobraBob's FAQ page?
You must be running the stock Alt. pulley, because I have the same set-up with a 3.2" Alt. pulley & I'm running a 78.5" Gates Belt....Zero issues! Good luck!
check pulley alignment with a strait edge
More info as I suspect this to be my case.
If your buddy is shredding belts, then likely there is a alignment issue. Is he running a aftermarket lower too? Seems alignment problems occur more if running a different lower pulley. Also where is your tensioner mark on your tensioner? I just posted this on another thread, it's a good read and makes sense.
Metco Motorsports
Double check this
What exactly should one do to check pulley with a straight edge? Where would I line it up? Whirring/whining is killing me.
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