[Healeys] Harmonic balancer

[Chris Dimmock]

Hi Simon,
All 3000's have one as standard. But yours is   now over 50 years old.....
The rubber eventually delaminates, and the standard 50 year old one wasn't a particularly good design. 
I've had this pro race one on my engine for the past 20 years
https://www.ebay.co.uk/itm/Pro-Race-64295-Harmonic-Balancer-Pro-Race-SFI-Austin-Healey-100-4-6-3000/322893258295?hash=item4b2df01e37:g:EFAAAOSwH4ha~SFp
Denis Welch sells this exact one as his road spec one. 
https://www.bighealey.co.uk/performance-parts/austin-healey/engines/3000-bottom-end/crank-damper-pulley-bm-eng643

On an aftermarket steel crank you need a better one, but this one  is fine up to 6,000 rpm

The reason you have one is:
https://en.m.wikipedia.org/wiki/Harmonic_damper

Best
Chris





Sent from my iPhone
> On 25 Oct 2018, at 7:32 pm, <simon.lachlan at alexarevel.plus.com> <simon.lachlan at alexarevel.plus.com> wrote:
> 
> A friend has suggested that I install one in my 3000.
> What precisely does it do?
> The name implies that it takes out vibration……..where’s the benefit? Less noise? Smoother revving which, in turn, achieves what….?
> These things aren’t cheap especially if one considers that I don’t apparently actually NEED one….
> Any tips would be welcome.
> And which particular unit?
> Thanks,
> Simon
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