[Healeys] 100 Road draft (vent) pipe fasteners

Michael Salter michaelsalter at gmail.com
Wed Feb 9 11:52:39 MST 2022


The fasteners wouldn't be HSS ...that is used for machine tools like drill
bits and lathe tools.

M

On Wed, Feb 9, 2022 at 1:47 PM Bob Haskell via Healeys <
healeys at autox.team.net> wrote:

> Bob,
>
> HSS - high speed steel.
> I think the threads are 3/8"-26 BSF (British Standard Fine).
>
> Cheers,
>
> Bob Haskell
> Austin Healey 3000 BN7/BT7 registrar
>
> On 2/9/22 1:25 PM, Bob Spidell wrote:
> > What does ‘HSS’ stand for?
> >
> >
> >> On Feb 9, 2022, at 10:15 AM, gradea1 at charter.net wrote:
> >>
> >> Just had a 100 engine to repair the oil feed pipe fitting on the
> >> rocker shaft 3rd block, and everyone might note that the thread for
> >> the special bolt is *3/8" x 26 HSS*. Helicoils are available for
> >> those who have "buggered" the fitting. Be careful when replacing this
> >> item on rebuild. Keep both ends loose until successfully threaded.
> >> The alloy rocker blocks are not easy to come by. Hank, healeyhelper.
> >>
> >> -----------------------------------------
> >>
> >> From: "Curtis Arndt"
> >> To: "Bob Spidell"
> >> Cc: "Healeys"
> >> Sent: Tuesday February 8 2022 11:28:21PM
> >> Subject: Re: [Healeys] 100 Road draft (vent) pipe fasteners
> >>
> >> Bob,
> >>
> >> If it's on the engine it's Whirworth, 1/4" BSF to be specific in the
> >> question you asked for #74.
> >>
> >> Cheers,
> >>
> >> Curt.
> >>
> >> On Tue, Feb 8, 2022 at 3:58 PM Bob Spidell <bspidell at comcast.net>
> wrote:
> >>
> >>     Anyone know off-hand what type of fasteners are used, Whitworth, or
> ?
> >>
> >>     Items# 72 & 76 in the Moss catalog page:
> >>     https://mossmotors.com/external-engine-100-4
> >>
> >>     TIA,
> >>     Bob
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> >
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