[s-cars] [s-cars} Was Bad CPS - Now Bad Crank Pulley

[Tom Mullane]

The reason why I ask is because on the Miata, the balancer has the same
issue, but when it comes unglued, disc that carries the timing mark is free
to rotate.  Suddenly TDC isn't TDC anymore.  Of course, the Miata has a
non-interference engine, so even a majorly out of whack belt does not yield
bent valves.

Tom


On 6/23/06, Darin Nederhoff <editor at s-cars.org> wrote:
>
>
> Having BTDT on my father's S4 I don't see how the harmonic balancer could
> fail in a way that would screw up timing.  The balancer is pretty much
> just a weight with a rubber bonding to a pulley.  Failure of the balancer
> would likely be a result of the rubber bonding letting go which is what
> happened on my father's car.  The worst thing it was doing was making a
> chatter noise and making the engine feel as if it were running rougher
> than normal at throttle tip-in.  When I replaced it, I was somewhat
> shocked to see that I could rotate the weighted portion of the balancer
> 180 degrees on the center hub... I will look to see if I snapped a picture
> of it and post it if possible.
>
> My .02,
>
>
> --
> Darin Nederhoff
> http://www.s-cars.org
>
>
>