[Healeys] Pro Race Harmonic Balancer

Michael Salter michael.salter at gmail.com
Wed Oct 31 14:06:51 MDT 2018

Hi Simon,
I would opt for rebuilding your original any day unless the vendor of the
replacement damper can provide evidence that the device that they are
flogging has been designed SPECIFICALLY for the engine type to which you
are fitting it.
I spent lot of time researching crankshaft dampers whilst studying the
causes 100 crankshaft failures and during that research I learned that
unless the damper is designed with a natural frequency of 0.8 - 0.9 of that
of the crankshaft it will probably be of no use at all.
Although many people will tell you otherwise the engineers at B.M.C. knew
what they were doing and you can be assured that a lot of effort went into
designing the dampers used on the 6 cylinder engine and they were not
fitted just to look pretty.


On Wed, Oct 31, 2018 at 8:41 AM <simon.lachlan at alexarevel.plus.com> wrote:

> Am still (just about) toying with the idea of getting a harmonic balancer.
> Maybe not tomorrow, but maybe whenever one turns up at a decent price.
> The Pro Race seems to be favoured by some of you. Most of you even.
> It being  manufactured in Australia, that seemed like the place to look.
> And it is cheaper there. But the postage is ludicrous..approx £175 to buy
> and approx. £85 to ship.
> Just how heavy are these things?
> Simon
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