Thanks for the info. The ones that I took off the manifold were brass
threaded rod and the threads had stripped under the nuts. I made some
by cutting the heads off steel cheese head screws. It looks like British
Fastener's may have the stud -
http://britishfasteners.com/studs/bsf-bsf-studs/bsf-cei-1-4-x-1-long-stud-26-26-tpi-36.html
Cheers,
Bob Haskell
AHCA 3000 Mk I registrar
http://www.ciahc.org/registry_3000mk1.php
On 04/24/2015 05:37 PM, Michael wrote:
> Curt is correct...what's new...
> BSF both ends.
>
> Michael S
> BN1 #174
> ------------------------------------------------------------------------
> From: Curtis Arndt <mailto:cnaarndt@gmail.com>
> Sent: â??24/â??04/â??2015 2:23 p.m.
> To: Bob Haskell <mailto:rchaskell@earthlink.net>
> Cc: Healey List <mailto:healeys@autox.team.net>
> Subject: Re: [Healeys] 100 carb balance pipe
>
> Hi All,
>
> I believe (almost certain) that the 1/4" studs on the manifold are BSF
> on BOTH ends. IF they were coarse threaded into the aluminum they would
> be BSW, to match the BSF Whitworth threads on the other end.
>
> Cheers,
>
> Curt
>
> On Thu, Apr 23, 2015 at 4:09 AM, Bob Haskell <rchaskell@earthlink.net
> <mailto:rchaskell@earthlink.net>> wrote:
>
> Alan,
>
> The threads are definitely BSF in these manifolds, but you're right
> - coarse thread is usually the case in aluminum.
>
> Thanks,
>
> Bob Haskell
> AHCA 3000 Mk I registrar
> http://www.ciahc.org/registry_3000mk1.php
>
> On 04/23/2015 06:21 AM, Alan Seigrist wrote:
>
> Bob -
>
> From memory I believe they have a section that isn't threaded
> in the
> middle, with coarse thread to go in the manifold and fine thread
> for the
> nut.
>
> Then again I probably have no clue what I'm talking about.
>
> Alan
>
> On Thu, Apr 23, 2015 at 6:01 PM, Bob Haskell
> <rchaskell@earthlink.net <mailto:rchaskell@earthlink.net>
> <mailto:rchaskell@earthlink.net
> <mailto:rchaskell@earthlink.net>>> wrote:
>
> Listers,
>
> The balance pipe is attached to each intake manifold with
> two studs.
> Are the studs just threaded rod, or is there a non-threaded
> section in
> the middle? Assume that they're steel and overall length
> an inch.
> Threads are 1/4-26 (BSF/BSC).
>
> Cheers,
>
> Bob Haskell
> AHCA 3000 Mk I registrar
> http://www.ciahc.org/registry_3000mk1.php
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