[Healeys] 100 generator pulley diameter

[Mark Donaldson]

From: Michael Salter <michaelsalter at gmail.com> 
Sent: Monday, 10 July 2023 3:13 PM
To: Mark Donaldson <ardmorebusiness at xtra.co.nz>
Cc: Hank Leach <gradea1 at charter.net>; Healey List <healeys at autox.team.net>
Subject: Re: [Healeys] 100 generator pulley diameter

 

There is only 1 part number for all 100 generator pulleys so pretty unlikely that there were different diameters.   Agreed  1B 1727

Lots of exchange generators back in the day.  The car was imported to NZ in 1964.  Surely a generator wouldn’t have packed up in just 8 years?

 

My BN2 which is very close to yours has only 27K miles and the generator date is correct 5 /56.

What is the date on yours?  11 55   . . .  and number 22483A, which is correct for a BN2

 

M

 

I realise one cannot always make an accurate measurement from a photo, but this Moss repro pulley looks, to my eye, to be more than 3.25” OD

Now I am totally confused.



 

 

On Sun., Jul. 9, 2023, 10:20 p.m. Mark Donaldson, <ardmorebusiness at xtra.co.nz <mailto:ardmorebusiness at xtra.co.nz> > wrote:

Hank and Michael,

Thanks for your replies.

Now I am curious.  I am 99.9% sure my generator pulley is original. The car was sold new in Guernsey in the Channel Islands.  

It is BN2 232844    11 June 1956 and the engine has never been out of the car, though I gave the generator a tidy-up 10 years ago.

As Hank points out, it is possible that various diameters may have been interchanged with other models during 100 production.

So our local Auckland member with a 3” OD pulley may well have the right one for his 1955 BN1

Michael, I’ll have him measure it again to see if in fact it is a 3.2” pulley . . . and not 3”

Question:  Might my 3½” OD pulley be correct for a late production BN2?

Mark

Ardmore

NZ

 

From: Hank Leach <gradea1 at charter.net <mailto:gradea1 at charter.net> > 
Sent: Monday, 10 July 2023 5:22 AM
To: 'Mark Donaldson' <ardmorebusiness at xtra.co.nz <mailto:ardmorebusiness at xtra.co.nz> >
Cc: 'Healey List' <healeys at autox.team.net <mailto:healeys at autox.team.net> >
Subject: Re: [Healeys] 100 generator pulley diameter

 

Hi Mark-had a similar problem with my early 100.  The pulley mounted to the generator turned out to be the wrong one and the belt lineup was askew.   The correct one shown is I believe about 3.25" and runs true. Since there were so many of these blocks used on A70, A90 and other saloons of the period, I could see how they got mixed up. Regards, Hank

-----------------------------------------

From: "Mark Donaldson" 
To: "Healey List"
Cc: 
Sent: Sunday July 9 2023 3:41:39AM
Subject: [Healeys] 100 generator pulley diameter

Learned gentlemen,

The pulley on my 1956 BN2 is 3½” diameter.  I believe it to be original.  I’ve owned the car for 45 years.

A friend has a BN1 with a pulley diameter of just 3”.  He thinks it is original.   I don’t.  It got me thinking.

I believe his is incorrect as it was converted here in NZ from a LHD import some 30 years ago.  BN1L 226180

The car has some clumsy conversions made to change it to RHD, so I don’t know what else might have been ‘cobbled up’ to get the car on the road.

Can somebody of you please confirm that 3½” is correct.

That said, I need another for a second 100 engine I am building as a spare.

They seem to be scarce down here in NZ, and repros seem to be rather expensive.

Fingers crossed.

Mark

Ardmore

NZ

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