UNDERDRIVE PULLEY Problem!!!!!!!!!!!

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10-01-2008, 07:49 PM

DaRkHoRsE2003

Thread Starter

Join Date: Sep 2008

Location: VA

Posts: 16

UNDERDRIVE PULLEY Problem!!!!!!!!!!!

I have BBK underdrive pulleys and they have been on for about 2 years. I noticed that the wheel on the water pump has a groove cut in it from where my belt was slipping. What causes the belt to wear a groove into the pulley wheel and am I supposed to change the size of the belt when I changed the pulley wheels?? PLEASE HELP !!!!!!!

10-01-2008, 08:19 PM

OzzDOA

3rd Gear Member

Join Date: Mar 2007

Location: Philly

Posts: 821

You shouldn't have to, although the BBKs being a piggy-back design might have something to do with it.

10-01-2008, 09:46 PM

02 Ninja

5th Gear Member

Join Date: Aug 2006

Location: Central Texas

Posts: 3,074

You need to look at your belt each year. Don't wait 2 years to check on things like that.

10-02-2008, 12:58 AM

GatorDude_97_GT

1st Gear Member

Join Date: Aug 2008

Location: Carolinas

Posts: 98

damn 2 years... just spend the 40 on a new belt...

10-02-2008, 02:54 PM

oxwhitegt03

1st Gear Member

Join Date: Sep 2007

Location: Western NY

Posts: 74

my stock pully has deep wear marks its got 45,000 miles on it im not sure what kinda belt im using

10-02-2008, 05:01 PM

cliffyk

TECH SAVANT

Join Date: Dec 2006

Location: Saint Augustine, FL

Posts: 10,938

The BBK UDPs are aluminum I believe, aluminum is a horrid material for making pulleys to be used with rubber drive belts--the rubber gets impregnated with grit and chews up the aluminum...