[16srqss]

Anyone that's had a whipple put on. Can you tell me what length belt I would need if changing upper pulley only to 3.375 or 3.250? I have a 2016 2ss

[brettman]

Use the same belt, just move the adjusting bolt (driver side) to the outside
I'm running 3.125 pulley with original belt.

(Whipple manual) 108. Using a breaker bar with 15mm socket, rotate the spring-loaded tensioner counter clockwise to its max open position. Route the supplied supercharger belt as shown in diagram. Use the "SLIDING IDLER" to remove all slack from the belt. Torque idler pulley to 22 ft-lbs and release tensioner. Tensioner must always be set at full to 3⁄4 open with a new belt. Failure to set this correctly may result in belt failure.
ADJUSTABLE IDLER

[16srqss]

Originally Posted by brettman

Use the same belt, just move the adjusting bolt (driver side) to the outside
I'm running 3.125 pulley with original belt.

(Whipple manual) 108. Using a breaker bar with 15mm socket, rotate the spring-loaded tensioner counter clockwise to its max open position. Route the supplied supercharger belt as shown in diagram. Use the "SLIDING IDLER" to remove all slack from the belt. Torque idler pulley to 22 ft-lbs and release tensioner. Tensioner must always be set at full to 3⁄4 open with a new belt. Failure to set this correctly may result in belt failure.
ADJUSTABLE IDLER

Thank you for the help