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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.=20
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-Aus=
tin-Healey-100-4-6-3000/322893258295?hash=3Ditem4b2df01e37:g:EFAAAOSwH4ha~SFp=
Denis Welch sells this exact one as his road spec one.=20
https://www.bighealey.co.uk/performance-parts/austin-healey/engines/3000-bot=
tom-end/crank-damper-pulley-bm-eng643
On an aftermarket steel crank you need a better one, but this one is fine u=
p 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@alexarevel.plus.com> <simon.lac=
hlan@alexarevel.plus.com> wrote:
>=20
> A friend has suggested that I install one in my 3000.
> What precisely does it do?
> The name implies that it takes out vibration=E2=80=A6=E2=80=A6..where=E2=80=
=99s the benefit? Less noise? Smoother revving which, in turn, achieves what=
=E2=80=A6.?
> These things aren=E2=80=99t cheap especially if one considers that I don=E2=
=80=99t apparently actually NEED one=E2=80=A6.
> Any tips would be welcome.
> And which particular unit?
> Thanks,
> Simon
> _______________________________________________
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>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>Hi Simon,</div><div>All 3000's have on=
e as standard. But yours is now over 50 years old.....</div><div>The r=
ubber eventually delaminates, and the standard 50 year old one wasn't a part=
icularly good design. </div><div>I've had this pro race one on my engin=
e for the past 20 years</div><div><a href=3D"https://www.ebay.co.uk/itm/Pro-=
Race-64295-Harmonic-Balancer-Pro-Race-SFI-Austin-Healey-100-4-6-3000/3228932=
58295?hash=3Ditem4b2df01e37:g:EFAAAOSwH4ha~SFp">https://www.ebay.co.uk/itm/P=
ro-Race-64295-Harmonic-Balancer-Pro-Race-SFI-Austin-Healey-100-4-6-3000/3228=
93258295?hash=3Ditem4b2df01e37:g:EFAAAOSwH4ha~SFp</a></div><div>Denis Welch s=
ells this exact one as his road spec one. <br><a href=3D"https://www.bi=
ghealey.co.uk/performance-parts/austin-healey/engines/3000-bottom-end/crank-=
damper-pulley-bm-eng643">https://www.bighealey.co.uk/performance-parts/austi=
n-healey/engines/3000-bottom-end/crank-damper-pulley-bm-eng643</a></div><div=
><br></div><div>On an aftermarket steel crank you need a better one, but thi=
s one is fine up to 6,000 rpm</div><div><br></div><div>The reason you h=
ave one is:</div><div><a href=3D"https://en.m.wikipedia.org/wiki/Harmonic_da=
mper">https://en.m.wikipedia.org/wiki/Harmonic_damper</a></div><div><br></di=
v><div>Best</div><div>Chris</div><div><br><div><br></div></div><div><br><div=
><br><br>Sent from my iPhone</div>On 25 Oct 2018, at 7:32 pm, <<a href=3D=
"mailto:simon.lachlan@alexarevel.plus.com";>simon.lachlan@alexarevel.plus.com=
</a>> <<a href=3D"mailto:simon.lachlan@alexarevel.plus.com";>simon.lach=
lan@alexarevel.plus.com</a>> wrote:<br><br></div><blockquote type=3D"cite=
"><div><meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-=
ascii"><meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered mediu=
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<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--><div class=3D"WordSection1"><p class=3D"Ms=
oNormal">A friend has suggested that I install one in my 3000. <o:p></o:p></=
p><p class=3D"MsoNormal">What precisely does it do? <o:p></o:p></p><p class=3D=
"MsoNormal">The name implies that it takes out vibration=E2=80=A6=E2=80=A6..=
where=E2=80=99s the benefit? Less noise? Smoother revving which, in turn, ac=
hieves what=E2=80=A6.?<o:p></o:p></p><p class=3D"MsoNormal">These things are=
n=E2=80=99t cheap especially if one considers that I don=E2=80=99t apparentl=
y actually NEED one=E2=80=A6.<o:p></o:p></p><p class=3D"MsoNormal">Any tips w=
ould be welcome.<o:p></o:p></p><p class=3D"MsoNormal">And which particular u=
nit? <o:p></o:p></p><p class=3D"MsoNormal">Thanks,<o:p></o:p></p><p class=3D=
"MsoNormal">Simon<o:p></o:p></p></div></div></blockquote><blockquote type=3D=
"cite"><div><span>_______________________________________________</span><br>=
<span>Support <a href=3D"http://Team.Net";>Team.Net</a> <a href=3D"http://www=
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