An m9 x 0.75mm tap threads nicely into the brass bush and with a bit
of heat from a blowtorch and a some hammering on a pin punch from the
other side, the bushing will come right out. The brass bushings are
ridged around the outside and just require a cleanup lick in the bore
with a 3/8 reamer before installing the DU bushings. The secret to
getting the reaming aligned is to use a 3/8 reamer backwards with the
handle section piloted in the opposite side hole.
I can't believe people charge $500 per carb to have this done when it
only requires some basic hand tools.
Andy.
On 1/25/17, Niels Bengaard <bengaard at 850r.dk> wrote:
> I had a machineshop ream my HD8 carbs and rebush them 5 years ago.
>
> I recall they say in the manual that comes with the set that you aren?t
> supposed to drill straight through, but drill from both sides and leave some
> material.
>
> That took a bit more time to align, but it was possible. He used a reamer
> for both the outside of the bushes and the inside.
>
>
>
> http://healey.850r.dk/albums/Picture%20Album/album/Carburettors/index.html
>
>
>
> Niels
>
>
>
> Fra: Healeys [mailto:healeys-bounces at autox.team.net] P? vegne af John Spaur
> Sendt: 24. januar 2017 15:30
> Til: 'Neil McDonald'; 'Michael MacLean'
> Cc: 'Austin Healey'
> Emne: Re: [Healeys] SU carb reamer needed
>
>
>
> Get standard bushings and have a local machine shop drill the body and
> insert the bushings or insert them yourself.
>
>
>
> John
>
> BT7
>
>
|