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Hi Bob,
The studs you linked to are not correct as they are Cycle threads (CEI -
Cycle Engineer Institute) on one end. CEI threads are NOT Whitworth even
though they are British threads as they have a 60 degree pitch angle of the
threads versus the 55 degree pitch angle for ALL Whitworth form fasteners.
One solution I've seen that is easy is to just remove the studs and replace
them with four short 1/4" BSF hex bolts in order to attach the balance
pipe. Not Concours but it works well.
Curt.
On Sat, Apr 25, 2015 at 4:19 AM, Bob Haskell <rchaskell@earthlink.net>
wrote:
> 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
>> ------------------------------------------------------------------------
>> Sent: =E2=80=8E24/=E2=80=8E04/=E2=80=8E2015 2:23 p.m.
>> 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
>>
>> 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
>>
>> 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
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation $12.75
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>>
>> http://autox.team.net/mailman/listinfo/healeys
>>
>> Unsubscribe/Manage:
>>
>> http://autox.team.net/mailman/options/healeys/healey.nut@gmail.com
>>
>>
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation $12.75
>> Archive: http://www.team.net/archive
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>>
>>
>>
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<div dir=3D"ltr"><div><div>Hi Bob, <br><br>The studs you linked to are not =
correct as they are Cycle threads (CEI - Cycle Engineer Institute) on one e=
nd.=C2=A0 CEI threads are NOT Whitworth even though they are British thread=
s as they have a 60 degree pitch angle of the threads versus the 55 degree =
pitch angle for ALL Whitworth form fasteners.<br><br></div>One solution I&#=
39;ve seen that is easy is to just remove the studs and replace them with f=
our short 1/4" BSF hex bolts in order to attach the balance pipe.=C2=
=A0=C2=A0 Not Concours but it works well.<br><br></div>Curt.<br></div><div =
class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Sat, Apr 25, 2015 a=
t 4:19 AM, Bob Haskell <span dir=3D"ltr"><<a href=3D"mailto:rchaskell@ea=
rthlink.net" target=3D"_blank">rchaskell@earthlink.net</a>></span> wrote=
:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex">Thanks for the info.=C2=A0 The ones tha=
t I took off the manifold were brass threaded rod and the threads had strip=
ped under the nuts.=C2=A0 I made some by cutting the heads off steel cheese=
head screws. It looks like British Fastener's may have the stud - <a h=
ref=3D"http://britishfasteners.com/studs/bsf-bsf-studs/bsf-cei-1-4-x-1-long=
-stud-26-26-tpi-36.html" target=3D"_blank">http://britishfasteners.com/stud=
s/bsf-bsf-studs/bsf-cei-1-4-x-1-long-stud-26-26-tpi-36.html</a><span class=
=3D""><br>
<br>
Cheers,<br>
<br>
Bob Haskell<br>
AHCA 3000 Mk I registrar<br>
<a href=3D"http://www.ciahc.org/registry_3000mk1.php"; target=3D"_blank">htt=
p://www.ciahc.org/registry_3000mk1.php</a><br>
<br></span><span class=3D"">
On 04/24/2015 05:37 PM, Michael wrote:<br>
</span><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-=
left:1px #ccc solid;padding-left:1ex"><span class=3D"">
Curt is correct...what's new...<br>
BSF both ends.<br>
<br>
Michael S<br>
BN1 #174<br></span>
------------------------------------------------------------------------<br=
>
From: Curtis Arndt <mailto:<a href=3D"mailto:cnaarndt@gmail.com"; target=
=3D"_blank">cnaarndt@gmail.com</a>><span class=3D""><br>
Sent: =E2=80=8E24/=E2=80=8E04/=E2=80=8E2015 2:23 p.m.<br></span>
To: Bob Haskell <mailto:<a href=3D"mailto:rchaskell@earthlink.net"; targe=
t=3D"_blank">rchaskell@earthlink.net</a>><br>
Cc: Healey List <mailto:<a href=3D"mailto:healeys@autox.team.net"; target=
=3D"_blank">healeys@autox.team.net</a>><span class=3D""><br>
Subject: Re: [Healeys] 100 carb balance pipe<br>
<br>
Hi All,<br>
<br>
I believe (almost certain) that the 1/4" studs on the manifold are BSF=
<br>
on BOTH ends.=C2=A0 IF they were coarse threaded into the aluminum they wou=
ld<br>
be BSW, to match the BSF Whitworth threads on the other end.<br>
<br>
Cheers,<br>
<br>
Curt<br>
<br>
On Thu, Apr 23, 2015 at 4:09 AM, Bob Haskell <<a href=3D"mailto:rchaskel=
l@earthlink.net" target=3D"_blank">rchaskell@earthlink.net</a><br></span><s=
pan class=3D"">
<mailto:<a href=3D"mailto:rchaskell@earthlink.net"; target=3D"_blank">rch=
askell@earthlink.net</a>>> wrote:<br>
<br>
=C2=A0 =C2=A0 Alan,<br>
<br>
=C2=A0 =C2=A0 The threads are definitely BSF in these manifolds, but you=
9;re right<br>
=C2=A0 =C2=A0 - coarse thread is usually the case in aluminum.<br>
<br>
=C2=A0 =C2=A0 Thanks,<br>
<br>
=C2=A0 =C2=A0 Bob Haskell<br>
=C2=A0 =C2=A0 AHCA 3000 Mk I registrar<br>
=C2=A0 =C2=A0 <a href=3D"http://www.ciahc.org/registry_3000mk1.php"; target=
=3D"_blank">http://www.ciahc.org/registry_3000mk1.php</a><br>
<br>
=C2=A0 =C2=A0 On 04/23/2015 06:21 AM, Alan Seigrist wrote:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Bob -<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 From memory I believe they have a sectio=
n that isn't threaded<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 in the<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 middle, with coarse thread to go in the manifol=
d and fine thread<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 for the<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 nut.<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Then again I probably have no clue what I'm=
talking about.<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Alan<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 On Thu, Apr 23, 2015 at 6:01 PM, Bob Haskell<br=
>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <<a href=3D"mailto:rchaskell@earthlink.net"; =
target=3D"_blank">rchaskell@earthlink.net</a> <mailto:<a href=3D"mailto:=
rchaskell@earthlink.net" target=3D"_blank">rchaskell@earthlink.net</a>><=
br></span>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <mailto:<a href=3D"mailto:rchaskell@earthlin=
k.net" target=3D"_blank">rchaskell@earthlink.net</a><span class=3D""><br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <mailto:<a href=3D"mailto:rchaskell@earthlin=
k.net" target=3D"_blank">rchaskell@earthlink.net</a>>>> wrote:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Listers,<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0The balance pipe is attache=
d to each intake manifold with<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 two studs.<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Are the studs just threaded=
rod, or is there a non-threaded<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 section in<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0the middle?=C2=A0 Assume th=
at they're steel and overall length<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 an inch.<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Threads are 1/4-26 (BSF/BSC=
).<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Cheers,<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Bob Haskell<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0AHCA 3000 Mk I registrar<br=
>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"http://www.ciahc.org/registry_3000mk=
1.php" target=3D"_blank">http://www.ciahc.org/registry_3000mk1.php</a><br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0___________________________=
____________________<br>
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</blockquote>
</blockquote></div><br></div>
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