[TR] Rocker feed screw.

[Don Hiscock]

I'm not aware of any Whitworth threads installed by S-T (at least on a
sidescreen car).  There may be some Whitworth and BA threads on bought-in
components, like SU carbs, Smiths, and possibly some Lucas.  But I'll be
shocked sh*tless to learn legit Withworth threads were used in a S-T engine.

Jonmac, I'd never heard that metric and inch fasteners were used on the
line at the same time depending on the end market for the vehicle.  That's
a fascinating bit of trivia, and one of the reasons we love having you
here!  What time period are you talking about for that?  Maybe 1970s?

On Wed, Apr 30, 2025 at 4:27 PM John Macartney <johnbmacartney at gmx.com>
wrote:

> I have my doubts about the offending item having Whitworth ancestry. While
> I’ve long been a Whitworth advocate and enthusiast (for purely patriotic
> reasons) I think it might be worth going down a metric route. There was a
> time when the factory briefly reverted to metric hardware that was market
> specific for European build. Needless to say, certain bits of hardware went
> where they shouldn’t (or inadvertently wound up there). Might this be a
> possible avenue to explore? Evaluate metric fine and coarse pitch threads.
>
> Jonmac
> ** triumphs at autox.team.net **
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