Supercharger belt science & the gates new RPM belt...

beefcake

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we've tried both, and prefer the green, we used a few rpms, but actually have seen some snapping issues with them





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RockStang

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So I decided to try the RPM again. The only way to get clearance from the tensioner is to set it at about 45% of of travel. No way you could hit the 20-30% that's recommended. I'm a little concerned about this tiny gap I have now.
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racingmason

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Running the rpm on the KB and it works great. When I do beat the snot out of the car no slippage. The green belt made noise after 500 miles for me.
 

markmurfie

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So I decided to try the RPM again. The only way to get clearance from the tensioner is to set it at about 45% of of travel. No way you could hit the 20-30% that's recommended. I'm a little concerned about this tiny gap I have now.
Are you running the 106.6 or a longer belt?
 

RockStang

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106.6 in this case Same as the Green I had on it but now I had to move the adjustable idler all the was towards the crank to get it where it is.
 

keltymd

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I have had a RPM on now for about 10k miles and have not snapped or had slip with my Whipple and a 3.625
 

JRedondox

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I have had a RPM on now for about 10k miles and have not snapped or had slip with my Whipple and a 3.625

whats your rpm belt part #?
 

Tugger50H

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Snapped my rpm at the track went back to green and no issues
 

doodguy

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Just chiming in for data sake. My car just hit 14k miles, and whipple gen3 about 6k miles. I have snapped 4 rpm belts, 3.0 upper 20 percent od lower.

Numerous calls and emails to whipple im not sure if have answers. Just ordered gates green belt. Crossing my fingers.
 

80FoxCoupe

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Gates RPM here on my Procharger stg2. Tension set per PC manual. No issues whatsoever. Not one hint of belt dust.
 

Jay-rod427

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Gates greens here
 

madlag

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Just chiming in for data sake. My car just hit 14k miles, and whipple gen3 about 6k miles. I have snapped 4 rpm belts, 3.0 upper 20 percent od lower.

Numerous calls and emails to whipple im not sure if have answers. Just ordered gates green belt. Crossing my fingers.
Gates RPM here on my Procharger stg2. Tension set per PC manual. No issues whatsoever. Not one hint of belt dust.
Where are you guys getting the RPM belts? I can’t find one anywhere for my procharger... K080645RPM
 
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Dominant1

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Where are you guys getting the RPM belts? I can’t find one anywhere for my procharger... K080645RPM
i got 2 new ones i will sell you if you have the 4.88 pulley... i'm the op...
 

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