tooothed cam gear harmonic balancer

[paperboy91]

after having seen that failures are getting a little more common i was thinking the same.

solution was to by a brand new front that has seen no fatigue cycles and no heat cycles. mines for a big stroker with lots of revs so didnt wan to risk it

shouldn't be seeing too much heat i would think. but they are 25 year old, and essentially a rubber part.

how much did you pay new?

[TobyB]

It's not a heat thing, it's a vibes thing.
The flywheel dampens the back of the crank, but that leaves the nose floating-
so the front dampener acts as an 'anti resonator' to prevent the nose from building
up vibration and shaking itself apart. The rubber ring lets it move some- but then 'catches'
it at the right phase of its oscillation to prevent it from breaking the crank.
It's a big deal on big block v8's, too...

t

[digger]

shouldn't be seeing too much heat i would think. but they are 25 year old, and essentially a rubber part.

how much did you pay new?

anything under the bonnet sees alot of heat especially between the engine and radiator.

rubbers dont like heat they fatigue a fair bit easier.

all rubber parts that see stress have a finite life, the heat lowers this, it is just the way it is

[paperboy91]

Update: got a balancer from Banchwerks in Ri's Tim. great guy. gave it to me for free! car started right up and I even drove it for the first time. here's hoping it doesn't decide t comeapart when I do timing belts in the future! Cheers guys