I just had my stock crank pulley put back on after having a UR one on for about 7 months because the power gains were not worth the <U>potential</U> problems and because the new belts that UR recomended seemed to be slipping.

The people at the shop i took my car back to sweared that there is no problem with having a lightend crank pulley becuase honda crank shafts are balanced.

After driving with the stock crank pulley back on the it seems to rev smoother.

That's just my experience with crank pullies becuase everyone i've ever talked to has had different opinions on changing a crank pulley.

 

Did you open up the bottom end of your engine and take a peep at the bearings, see how they looked like?

 

No, though i didn't put a lot of miles on my car when the pulley was on. I'm only at 25,000 on a 2000 accord.

 

Read the update section on the link.

http://www.ntpog.org/reviews/underdrive/pulley.shtml

 

The exact link that convinced me to drop the idea of adding a crank pulley on my car last october.


[Modified by sauceman77, 9:18 PM 1/21/2003]

 

crank pulley is definately not worth it. I think balancing the motor with the new pulley would be the only was to avoid a problem over time.

honda designed it with a harmonic damper as the factory design.

 

It has nothing to do with balancing. Its harmonics that you have to worry about.

The stock pulley and the aftermarket one could be balanced with all the rotating components. Problem is only the OEM pulley has the rubber between the crank and the belt interface.

Since 4 cyls are harmonically unbalanced the rubber is needed along with the balance shafts.

 

Replacing your harmonic balancer with an aftermarket unit will probably cause a few odd problems. Engine bearings probably wouldn't last as long and the crankshaft itself is stressed more because anything more than 1/2 degree of crankshaft twist will cause a failure (sooner or later). You may have flywheel bolts, flexplate bolts, engine mount bolts, etc... that won't stay tight.

For the sake of durabillity, I'd stay with the factory balancer. I'm sure a lot of R&D went into its design.