[Healeys] Setting SU HD Carburettors

[Derek Job]

Thanks Steve.

Yes I realised your procedures are for 'Healey' HD8's or model AUD 124 to
be precise. No other HD8 is listed for the MkIII so I imagine that most
every BJ8 owner will have HD8s without the throttle adjusting screws and
can use your instructions. (Also I see no reference to throttle adjusting
screws for any H or HS type carbs).

The extra adjusting screw on my carbs confused me and a few others who have
looked at them. I would like to ascertain whether they are original or
whether a PO added them. Next time I'm at a classic car car show I'll be
looking at Jaguar carbs very closely to see if I can spot any  similar to
mine!

Derek

On Sat, Aug 18, 2012 at 2:14 PM, BJ8 Healeys <sbyers at ec.rr.com> wrote:

> Derek, the procedures I wrote are titled:  "Adjustment of the HD8
> Carburetor
> for the BJ8".  There was no attempt to include procedures for any other
> model of HD8 carburetor used on any other car.  Although I did not know
> that
> HD8s of other models were used on Aston Martins, Jaguars, etc., I presume
> most people on our list who are interested in the procedures have a Healey
> and the AUD124s.  If a car has HD8 carbs from a non-BJ8, then the
> procedures
> probably do not apply to them - at least, in a way so as to avoid
> confusion.
> Having been involved in developing technical procedures and manuals
> throughout my engineering career, I know that when too many different
> models
> are covered by the same manual, there is a lot of opportunity for the
> procedures to become more confusing than helpful.  I found that true of the
> SU manual and that was my motivation for re-writing the procedures.
> Originally, I did it for my own use.
>
> Steve Byers
> HBJ8L/36666
> BJ8 Registry
> Havelock, NC  USA
>
> From: Derek Job [mailto:derek.c.job at gmail.com]
> Sent: Saturday, August 18, 2012 4:52 AM
> To: John Sims
> Cc: BJ8 Healeys; Forum
> Subject: Re: [Healeys] Setting SU HD Carburettors
>
> I just leafed through the entire Burlen (SU) parts book.
>
> Regarding HD8 Carburettors. Only one type is listed for Austin Healey
> MkIII's. That is AUD124. (Presumably this does not have throttle screws)
>
> There are however many, many varieties of HD8 carbs.
>
> 6 different types are listed for Aston Martins, Bentley and Rolls Royce
> have
> about 10 varieties while there are over 20 varieties of HD8s listed for
> Jaguars.
>
> Presumably throttle adjusting screws are installed on some of the above
> types, hence the reference in the SU workshop manual.
>
> Derek
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