You are correct in what you say. 'Clutchtools' do not advertise the
correct tool for a BN1.
As a matter of interest I looked up the official BMC Service Tool
Catalogue and I believe that there are errors in this.
Service Tool 18G79; that I believe is correct for a BN2 does not list
the 100 at all. The only Healey listed is 100 six
Service Tool 18G80 lists A70, A90 Healey 100 and Healey 100 Six.
I maintain that 18G79 should include the 100 BN2 and 18G80 should not
include Healey 100 Six but only list the Healey 100 suitable for a BN1.
Anyway the dimensions of my tools that are based on the above BMC tools
have a pilot length of 2.00" and further length for the plate of 2.00".
Mine are turned down from 8" lengths of 1" diameter steel.
>If I was going to make a set, I'd make them like yours. The only other
>dimension I'd need would be the length of the pilot.
>There's a firm (http://www.clutchtools.com) that sells them for $10 and
>their catalog incorrectly lists the same tool for all big Healeys. I
>thought it might be helpful to see if they have the tools with the
>correct dimensions for the BN1 and BN2. Their tools are splined, so
>that's the reason for my questions.
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