Underdrive Pulleys
Thread Starter
1st Gear Member
Joined: Jan 2008
Posts: 55
From:
Underdrive Pulleys
I've noticed a couple of posts where people have mentioned "piggy back" style. What are these exactly? I read where someone said they tend to cause oil pump damage. I just installed some BBK pulleys as shown in the image below. Are those piggy back style?
Thread Starter
1st Gear Member
Joined: Jan 2008
Posts: 55
From:
RE: Underdrive Pulleys
Well, I purchased them for $100 and that's why I bought them. Other than the material and brand, I can't really tell any difference in the BBK and the Steeda if they both are supposed to do the same thing. How common are problems with the piggy back style?
2nd Gear Member
Joined: Jul 2007
Posts: 284
From: The Grand Metropolis that is... Maine
RE: Underdrive Pulleys
piggyback means it bolts up to the original crank pully and utilizes the stock harmonic balancer. Steeda UDPs have a built in balancer so you can replace the entire stock crack pully/balancer. Adding the piggyback pully causes more strain on the front of the crank shaft and therfor can cause other problems.
1st Gear Member
Joined: Aug 2007
Posts: 89
RE: Underdrive Pulleys
ORIGINAL: SlvrOhTwoGeeTee
piggyback means it bolts up to the original crank pully and utilizes the stock harmonic balancer. Steeda UDPs have a built in balancer so you can replace the entire stock crack pully/balancer. Adding the piggyback pully causes more strain on the front of the crank shaft and therfor can cause other problems.
piggyback means it bolts up to the original crank pully and utilizes the stock harmonic balancer. Steeda UDPs have a built in balancer so you can replace the entire stock crack pully/balancer. Adding the piggyback pully causes more strain on the front of the crank shaft and therfor can cause other problems.
2nd Gear Member
Joined: Nov 2007
Posts: 384
From:
RE: Underdrive Pulleys
ORIGINAL: red93z
do the steeda pulleys make a difference at all?
ORIGINAL: SlvrOhTwoGeeTee
piggyback means it bolts up to the original crank pully and utilizes the stock harmonic balancer. Steeda UDPs have a built in balancer so you can replace the entire stock crack pully/balancer. Adding the piggyback pully causes more strain on the front of the crank shaft and therfor can cause other problems.
piggyback means it bolts up to the original crank pully and utilizes the stock harmonic balancer. Steeda UDPs have a built in balancer so you can replace the entire stock crack pully/balancer. Adding the piggyback pully causes more strain on the front of the crank shaft and therfor can cause other problems.
http://autohow.tv/node/13
i would never take the risk with piggy-back UDP's, but that's just me!