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[Healeys] Generator pulley dimensions

Subject: [Healeys] Generator pulley dimensions
From: p_cquinn at tpg.com.au (Patrick & Caroline Quinn)
Date: Sun, 11 Jun 2017 14:59:25 +1000
References: <2164CB24AAE84D22B1E0E0813ADC4EC0@MarkPC>
Hello Mark

 

Of course with a larger pulley it means that it will turn slightly slower.
Whether that has an effect on the charging rate I don?t know.

 

It?s not just the generator pulley that?s different as I have recently found
out that the water pump pulley in the early six-cylinder engines is larger.
I fitted a new water pump to the BN3 only to find that when fitting the
standard fan belt it was too long and the generator was hitting the steering
column. With a 2 ? centimetre shorter belt it fits perfectly.

 

Best wishes

 

Patrick Quinn

Blue Mountains, Australia 

 

From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Mark
Donaldson
Sent: Sunday, 11 June 2017 12:22 PM
To: healeys at autox.team.net
Subject: [Healeys] Generator pulley dimensions

 

Listers,

 

Until now I'd never noticed the small differences in generator pulley
diameters.

 

What is the diameter of the pulley fitted to a Mk II tri-carb - part number
AEC 910 ?

The one presently fitted to mine is 100mm.  It does not have a part number
on it.

 

I have a 100/6 pulley with part number AEC 291 sitting on my shelf.  

It shows the part number on the casting and has a diameter of 110 mm.  (see
photo attached.)

 

As a matter of interest - could the 100/6 pulley be used on a later model
without adverse effect - bearing in mind the generator speed would be only
marginally reduced.

 

Mark

 

Ardmore

NZ

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