Pinning The Harmonic Balancer?
 

I just ordered a Fluidampr, I'm debating weather or not I should instal the pin kit???
I just don't see how those roll pins are gonna add any strength to the four Grade 8 bolts.
Can anyone shed some light on this???
Thanks!:U::pca1:

I am unfamiliar with the setup but I will add that a roll pin is a very strong piece that does more than you would think.............if they supply it in the kit than it prolly has a purpose otherwise they wouldnt spend the money building it that way

Grade 8 bolts are strong enough to be sure but with this hardness comes the fact that in high vibration applications they are also brittle. The bolts would provide the gripping strength to hold everything together and the pins would prevent the vibration and rotational forces from snapping the bolts.

Grade 8's are good for certain uses, stronger isn't always better. Since I'm a trailer guy the best example I can think of is trailer hitches. They never come with grade 8's, and they should never be used. With the pulling forces moving the metal parts back and forth against each other grade 8's tend to either shatter or vibrate loose after time. In this case grade 5 bolts work better because they flex with the parts and keep everything tight.

ill be pinning mine........

hmmm,never thought of that before,but it makes sense.

That Does make sense! So, when/ if the time came to replace the front crank seal, would a guy just drill the old pins out, and put new one's in after reinstalling the damper?

yeah I would say thats how you'd have to do it, unless you could get the damper off with them in place. Left hand drill bit would be ideal.

when i do mine im going to put a new crank seal in it.......

The pin doesn't come with Balancer,
you need to order the pinning kit.

I just bought one an the instructions says if you race or turn the motor over 4000 rpm to pin it .

In my application I would not bother pinning it,I'm not a drag racer though,and I can't use a fluidamper with my belt driven LP anyway.
I did install my darn dampener and forgot to tighten it the rest of the way down,well the bolts backed out a little,I tried to tighten them while waiting for a ferry @ Nanimo,stripped 3 bolts,So I found a pop can in the garbage,made a shim to make the dampener run fairly true,tightened the hell out of one bolt,made sure not to jurk the RPM around and made it the 300miles back home.
(One of the times I was nearly in tears in my adult life)

what are the benefits of the fluid amper, and how nessicary do you believe it really is?

With age the stock damper has a rubber strip or ring around it,with age it will dry rot or crack.

The fluid damper balances out the torsional vibrations.

Torsional vibration is a concern in the crankshafts of internal combustion engines because of several factors.

Alternating torques are generated by the slider-crank mechanism of the crankshaft, connecting rod, and piston.
The motion of the piston mass and connecting rod mass generate alternating torques often referred to as "inertia" torques
The cylinder pressure due to combustion is not constant through the combustion cycle.
The slider-crank mechanism does not output a smooth torque even if the pressure is constant (e.g., at top dead centre there is no torque generated)
Engines with several cylinders can have very flexible crankshafts due to their long length.
There is inherently little damping in a crankshaft to reduce the vibration