My buddy needs a Crank pulley for his B16, a friend of mine has an LS B18B crank pulley. Yes i know the pullies will fit on eachother and bolt up no problem. But i was told you shouldn't switch them because of the harmonic balance. Is this true?

 

anyone?

 

up

 

I can't verify about the balance, but I will say I know for a fact they are interchangeable.

 

ya i know they're interchangeable thanks tho!

 

???

 

you can but its not the best idea its rare happening of it hurrting the motor but each crank pulley is specifically balanced o each motor

 

Agreed. Now why to switch to a Fluidampr today!!
The typical stock damper is an elastomer (rubber) damper, referred to as tuned or frequency sensitive. An elastomer damper (rubber) is designed to function throughout only a narrow predetermined vibration frequency bandwidthassociated with the RPM, torque and horsepower engineered for a particular engine application. Tuned or frequency sensitive stock dampers rely on a specific durometer of elastomer (rubber) to absorb the harmonic vibrations produced by the engine and are limited to that bandwidth of vibration frequencies. Even if an engine will not be operating at a high RPM,any change of the mass of the pistons, rods or the crankshaft will change the natural frequency of the crankshaft assembly. The stock or aftermarket elastomer damper is not able to self tune beyond the vibration bandwidth that it is designed for.

When performance enhancements are made or added to a stock engine to increase horsepower and torque, whether for commercial, pleasure or competition, the increase in performance overworks the stock damper because of its inherent inability to self tune to the increased harmonic vibration generated. This results in diminished engine protection.

Dampers also create heat while they work; elastomer (rubber) is a poor dissipater of heat. Heat and exposure to the elements, oils and solvents deteriorates the elastomer (rubber) causing it to crack and/or change durometer. Eventually this causes inertia ring slippage, uncontrolled torsional vibrations, damper failure and costlyv damage to engine parts. The Fluidampr design incorporates a totally sealed laser welded housing encasing a precision machined inertia ring, suspended in a thin film of highly viscous silicone fluid. The viscous silicone fluid allows the inertia ring to shear the harmonic vibration from the engine, regardless of any performance enhancements that have been made to the engine. This is possible because the Fluidampr is frequency insensitive, able to self tune to the exact frequency bandwidth of the engine harmonics at any given range.

The advantage is clear...
The silicone fluid used in Fluidampr is a clear gel and is more than 45,000 times thicker (more viscous) than 30 weight motor oil. Silicone fluid is an excellent damping medium because of its tensile strength, density and low friction properties. The silicone allows the inertia ring to rotate freely within the housing, tuning to the harmonic vibration generated with every stroke of the engine. The silicone is also thermally stable providing consistent damping in all weather. Fluidampr viscous dampers never have to be tuned or rebuilt and in performance application will never wear out. Be leery of damper manufacturers that state their “damper should be rebuilt or tuned”.