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Old 05-05-2011, 07:30 AM   #1
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HELP! In the middle of the RRS UNder Pulley install....

I'm having trouble installing the new belt. I have the RRS Under pulley and was told to get the napa 060827 belt but it seems impossible to get it on I need another half inch to get it on the tensinor pulleys. Belt model says exactly "25-060827" is this the one?
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Mods- Maxspeed Headers, Stebro delete cats, Stebro Sport Exhaust, BMC air filter, IPD Plenum Kit, 997 75 mm Turbo TB, RSS Under Pulley, EuroDyne Flash, Schnell Short Shifter, Aasco LWFW, Stage 3 Bully Clutch, GT3 CF Seats, Eibach Lowering Springs
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Old 05-05-2011, 07:37 AM   #2
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If you are certain you have the belt threaded correctly it sounds like you need a longer belt. As I recall one size does not fit all. Two years ago when I installed mine so recall is a bit fuzzy.
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Old 05-05-2011, 08:05 AM   #3
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Quote:
Originally Posted by Topless
If you are certain you have the belt threaded correctly it sounds like you need a longer belt. As I recall one size does not fit all. Two years ago when I installed mine so recall is a bit fuzzy.

There's different sizes with that model number from "gates belt"?
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2019 Denali 1500, 2001 BMW 740iL, 2001 Boxster S

Mods- Maxspeed Headers, Stebro delete cats, Stebro Sport Exhaust, BMC air filter, IPD Plenum Kit, 997 75 mm Turbo TB, RSS Under Pulley, EuroDyne Flash, Schnell Short Shifter, Aasco LWFW, Stage 3 Bully Clutch, GT3 CF Seats, Eibach Lowering Springs

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Old 05-05-2011, 08:28 AM   #4
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Nope. Different belt length, different part #. I don't know which belt I used with my pulley.
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Old 05-05-2011, 12:40 PM   #5
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I changed the belt for a 3/4 inch bigger. Barely came on. But I'm good to go, thanks!
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2019 Denali 1500, 2001 BMW 740iL, 2001 Boxster S

Mods- Maxspeed Headers, Stebro delete cats, Stebro Sport Exhaust, BMC air filter, IPD Plenum Kit, 997 75 mm Turbo TB, RSS Under Pulley, EuroDyne Flash, Schnell Short Shifter, Aasco LWFW, Stage 3 Bully Clutch, GT3 CF Seats, Eibach Lowering Springs
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Old 05-05-2011, 12:56 PM   #6
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I had the same issue and ended up re using the OEM belt which fits and was in like new condition. Eventually I will get a new and shorter belt as the OEM is "just" that bit too long for my taste......
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Old 05-05-2011, 02:02 PM   #7
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Here's some advice that I got back when I installed my BBI light weight under drive pulley:


Hello Johnny.

If you can be sure (confirm with a Porsche dealer if you'd like) that your Boxster uses the same belt as my 2007 Cayman S then yes, the Gates K060820 should work fine.

If you'd like to play it safe, take you OEM belt in to your local auto-parts store that sells Gates and tell him you need a similar belt but about 30mm to 38mm shorter. My stock 2007 Cayman S belt measures 2113mm, Gates part #K060832.

Gates offers the same belt design in neighboring lengths of 2098, 2082, 2071 and 2058 mm. The 2082 mm (31mm shorter than stock) seems to be the best length based on the calculation of the under-drive pulley circumference. For future reference this Gates belt is #K060820.

Regards,
Joe


Everything worked out well .
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