Just got underdrive pulleys
07-19-2005, 06:07 PM
#1
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Just got underdrive pulleys
So yeah i just got my BBK Underdrive pulleys and i was wondering if i needed a specific belt for them or should i just use my stock one. Also am i gonna need new bearings or should i just use the ones i got on there right now. Thanks in advance.
07-19-2005, 06:15 PM
#3
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Location: Oklahoma City, Oklahoma
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RE: Just got underdrive pulleys
You do not need a new belt unless your old one is worn, or if you are only installing one pully (i.e. crank pully) If you are installing (3) pullys you do not need a new one. If that is the case go to a parts store and get yourself a GoodYear Gator back in the stock size!!
07-19-2005, 06:15 PM
#4
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RE: Just got underdrive pulleys
You can use your stock belt, but if your car has 15k or more on it it'll be a good excuse to get a new belt.
The size difference from the crank pulley is made up with the water pump and alternator, so there is no belt size change.
The size difference from the crank pulley is made up with the water pump and alternator, so there is no belt size change.
07-19-2005, 08:14 PM
#6
RE: Just got underdrive pulleys
ORIGINAL: AtlanticBlue99
you need a new belt. when you put the pulleys on, run a string through the path the belt would take and measure it. then go to autozone and ge tthat belt
you need a new belt. when you put the pulleys on, run a string through the path the belt would take and measure it. then go to autozone and ge tthat belt
07-20-2005, 02:28 AM
#7
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RE: Just got underdrive pulleys
When I put on my Steeda UDP's I DID NEED A NEW BELT. The old one would not fit at all. Went to autozone and did the trial and error thing. Even though the OEM one only had like 10k on it at that point.
07-20-2005, 02:56 PM
#8
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RE: Just got underdrive pulleys
Dan02GT is right. If over 15,000 to 20,000+ miles already on your existing belt, then buy a new Ford serpentine belt....SAME SIZE, stock. The overall belt travel on the underdrive pulley's is the same as stock.
07-23-2005, 01:07 PM
#10
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Location: Georgia
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RE: Just got underdrive pulleys
Demonite23, if the BBKs are piggyback style, put locktite on the bolts that hold the stock dampener to the aluminum pulley. I just replaced my piggies with Steeda one piece and all three bolts were backing out after 1000 miles or less.