[Healeys] 100 generator pulley diameter

[Michael Salter]

There is only 1 part number for all 100 generator pulleys so pretty
unlikely that there were different diameters.
Lots of exchange generators back in the day.
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?

M


On Sun., Jul. 9, 2023, 10:20 p.m. Mark Donaldson, <
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>
> *Sent:* Monday, 10 July 2023 5:22 AM
> *To:* 'Mark Donaldson' <ardmorebusiness at xtra.co.nz>
> *Cc:* 'Healey List' <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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