[Healeys] Starter differences.

Michael Salter michaelsalter at gmail.com
Sat Sep 19 10:59:13 MDT 2015

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/

On Sat, Sep 19, 2015 at 10:25 AM, Thomas & Britta Willig <willig at wtnet.de>

> The earlier Starter will have screw connectors, the later BJ8 will have
> Lucar "spade" connectors
> Regards
> Thomas Willig
> ​ ​
> Von meinem iPad gesendet
> Am 17.09.2015 um 20:29 schrieb Brian Drab <bgdrab at eastlink.ca>:
> A quick question for the knowledgeable ones on the list:
> I have a late BJ8. Recently the started began to act a little erratically.
> I have a starter off an older BN6. I took it apart and cleaned it up and
> reassembled it. My plan was to simply install it on my BJ8. I noted that
> the Lucas number on this started was “ 25521D”.  It also  has the number
> M418G under the Lucas number.  As well, it appears to be date stamped as 6
> 58.
> I compared this started with the starter off my BJ8. It appeared identical
> in every respect both internally as well as externally. I then noted the
> Lucas number on the BJ8 starter as 25578B. It also has M418G stamped under
> it. The date stamp is 67.
> My question is what is the difference between the 2 starters. I note that
> Moss sells a starter for #25521D -  BN4 thru BT7 and a second starter for
> #25578B - BJ7 and BJ8.
> Victoria British lists one starter for all series of big Healeys. I then
> went onto several different starter repair company websites and *all*
> list only one starter for both numbers 25521D and 25578B.
> So - what is the difference?
> Brian Drab
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*If you can't fix it with a hammer, you've got an electrical problem.*
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