[Healeys] Starter differences.

[Alan Seigrist]

I suspect slightly more windings to cope with slightly more compression.

On Sunday, September 20, 2015, Michael Salter <michaelsalter at gmail.com>
wrote:

> Its a rainy day at Fox Point so I thought I would look into this to see if
> I can figure out what it is all about.
> After an extensive cross check of the component part numbers for the 25521
> and the 25578 starters I can find no difference between the parts. (There
> is some argy bargy regarding the brush springs but that seems to be a "red
> herring"). ;-)
> HOWEVER the starter with part number 25578 seems to be exclusively for the
> 1963 - '67 Austin -Healey '3000' Conv.
> The 25521 starter (used on Healeys up to 1963) was still available during
> this time, it was used on the Humber Super Snipe' the Rover 2000, and the
> Vanden Plas 3 litre 'Princess" but it is NOT specified for the Healey.
> There must have been some special requirement of the 25578 starter that
> was exclusive to the later Healey 3000 because creating a unique part was
> no small deal.
> Typically a different part number (disregarding the suffix letter)
> indicated that the part was not "correctly" interchangeable although as we
> know any Healey starter will fit and work on any Healey..
>
> Anyone got any idea what makes the 1963 - '67 Austin -Healey '3000' Conv.
> starter different from others?
>
> Note: The suffix letter is a Lucas indication of a change in the
> manufacturing process for the component and has no influence on the
> interchangeability of the unit, however it can indicate that its component
> parts may have changed and interchangeability of parts within the unit
> should be checked in the equipment specifications book.
>
> Michael S
> My Blog http://www.netbug.net/blogmichael/
>
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