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Curt-absolutely, I'm glad that I had them for my 100 and they are on=0At=
he car #588 October 22,1953-not too many UNF hardware items on this=0Aca=
r. Regards, Hank=0A=0A=09-----------------------------------------From:=
"Curtis Arndt" =0ATo: "Hank Leach"=0ACc: "healeys@autox.team.net", "Mic=
hael Salter"=0ASent: Tuesday May 23 2023 9:40:38AM=0ASubject: Re: [Heale=
ys] Exhaust hangers=0A=0A Hank =0A Thanks! Very cool photo, may we use t=
his for the AH Concours=0AGuidelines? =0A No one can tell just when the=
"U" bracket threads changed. =0A Many Whitworth fasteners on the late=
BN1s and BN2s were changed over=0Ato UNF in late '55 nad '56. Most of t=
hese changes were documented in=0Athe factory parts manual and service b=
ulletins while some were not=0Adocumented at all. Like Hank stated, when=
the parts bin ran out, new=0Aitems were often sourced and installed, an=
d not necessarily=0Adocumented. =0A Until we can confirm that were UNF t=
hreaded "U" brackets used on=0Alater 100s in lieu of the BSF ones, then=
the assumption has to be that=0Athey were used until the end of BN2 pro=
duction. So, if anyone out=0Athere has an original "U" clamp from a late=
BN1 or BN2 with UNF=0Athreads, please submit documentation to Michael S=
alter and me so that=0Awe can update the Concours Guidelines. =0A Cheers=
, =0A Curt Arndt =0A On Tue, May 23, 2023 at 8:59=E2=80=AFAM Hank Leach=
wrote:=0A Ok, as long as we are showing clamps, here is my NOS exhaus=
t bracket=0Aset. It was still wrapped in this photo, but as Curt says- i=
ts British=0Athread-probably until mid 1954 when they tried to unify or=
whenever=0Athe bin holding exhaust brackets ran out and they refilled i=
t.=0AWhichever came first. They did not throw any away in lieu of unifie=
d=0Areplacements. =0A Likely, Michael's new set will be UNF as they are=
not making any=0Aearly parts for "purists"-same holds true on the rear=
gearbox mounts=0Aand other items as well. Hank=0A=0A=09----------------=
------------------------- From: "Curtis Arndt via=0AHealeys"=0A To: "Mic=
hael Salter"=0A Cc: "Ahealey help"=0A Sent: Tuesday May 23 2023 8:27:22A=
M=0A Subject: Re: [Healeys] Exhaust hangers=0A=0A _
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<html><body>Curt-absolutely, I'm glad that I had them for my 100 and the=
y are on the car #588 October 22,1953-not too many UNF hardware items on=
this car. Regards, Hank<br><br><div class=3D"reply-new-signature"=
></div><p>-----------------------------------------</p>From: "Curtis Arn=
dt" <cnaarndt@gmail.com><br>To: "Hank Leach"<br>Cc: "healeys@autox.team.=
net", "Michael Salter"<br>Sent: Tuesday May 23 2023 9:40:38AM<br>Subject=
: Re: [Healeys] Exhaust hangers<br><br>=0A<div dir=3D"ltr"><font size=3D=
"4">Hank</font>=0A<div><font size=3D"4"><br></font></div>=0A<div><font s=
ize=3D"4">Thanks! Very cool photo, may we use this=0Afor the AH Con=
cours Guidelines?</font></div>=0A<div><font size=3D"4"><br></font></div>=
=0A<div><font size=3D"4">No one can tell just when the "U" bracket=0Athr=
eads changed. </font></div>=0A<div><font size=3D"4"><br></font></di=
v>=0A<div><font size=3D"4">Many Whitworth fasteners on the late BN1=
s=0Aand BN2s were changed over to UNF in late '55 nad '56. Most of=0Athe=
se changes were documented in the factory parts manual and=0Aservic=
e bulletins while some were not documented at all. Like=0AHank stat=
ed, when the parts bin ran out, new items were often=0Asourced and insta=
lled, and not necessarily documented.</font></div>=0A<div><font size=3D"=
4"><br></font></div>=0A<div><font size=3D"4">Until we can confirm that w=
ere UNF threaded "U"=0Abrackets used on later 100s in lieu of the BSF on=
es, then the=0Aassumption has to be that they were used until the e=
nd of BN2=0Aproduction. So, if anyone out there has an original "U" clam=
p from=0Aa late BN1 or BN2 with UNF threads, please submit documentation=
to=0AMichael Salter and me so that we can update the Concours=0AGuideli=
nes.</font></div>=0A<div><font size=3D"4"><br></font></div>=0A<div><font=
size=3D"4">Cheers,</font></div>=0A<div><font size=3D"4"><br></font></di=
v>=0A<div><font size=3D"4">Curt Arndt</font></div>=0A</div>=0A<br><div c=
lass=3D"gmail_quote">=0A<div dir=3D"ltr" class=3D"gmail_attr">On Tue, Ma=
y 23, 2023 at 8:59=E2=80=AFAM=0AHank Leach <<a>gradea1@charter.net</a=
>>=0Awrote:<br></div>=0A<blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0px 0px 0px .8ex;border-left:1px solid rgb(204,204,204);padding-lef=
t:1ex;">=0A<div>Ok, as long as we are showing clamps, here is my NOS exh=
aust=0Abracket set. It was still wrapped in this photo, but as Cur=
t=0Asays- its British thread-probably until mid 1954 when they tried to=
=0Aunify or whenever the bin holding exhaust brackets ran out and they=
=0Arefilled it. Whichever came first. They did not throw any away in=0Al=
ieu of unified replacements. =0A<div><br></div>=0A<div>Likely, Mich=
ael's new set will be UNF as they are not making=0Aany early parts for "=
purists"-same holds true on the rear gearbox=0Amounts and other items as=
well. Hank<br><br><p>-----------------------------------------</p>=0AFr=
om: "Curtis Arndt via Healeys"<br>=0ATo: "Michael Salter"<br>=0ACc: "Ahe=
aley help"<br>=0ASent: Tuesday May 23 2023 8:27:22AM<br>=0ASubject: Re:=
[Healeys] Exhaust hangers<br><br><div dir=3D"ltr">=0A<div dir=3D"ltr"><=
font size=3D"4"><i><To be correct the "U" clamp=0Ashould have UNF thr=
eads. Just=0Asayin'></i><br></font></div>=0A<div dir=3D"l=
tr"><font size=3D"4"><br></font></div>=0A<div dir=3D"ltr"><font size=3D"=
4">Michael, FWIW, both of my ORIGINAL=0A"U" shaped clamps have BSF faste=
ners... See photos. I reused one of=0Amy originals when I restored=
my BN1. Modern reproduction "U"=0Aclamps use UNF or more commonly=
UNC fasteners.</font></div>=0A<br><div class=3D"gmail_quote">=0A<div di=
r=3D"ltr" class=3D"gmail_attr">On Mon, May 22, 2023 at 7:33=E2=80=AFPM=
=0AMichael Salter <<a>michaelsalter@gmail.com</a>>=0Awrote:<br></d=
iv>=0A<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px .8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex;">=0A<div>The s=
trut attaches to an extra length oil pan screw, the one=0Adirectly below=
the spot where the tach cable attaches to the tach=0Adrive housing.=0A<=
div>To be correct the "U" clamp should have UNF threads. =0A J=
ust sayin'</div>=0A<div><br></div>=0A<div>M</div>=0A</div>=0A<br><div cl=
ass=3D"gmail_quote">=0A<div dir=3D"ltr" class=3D"gmail_attr">On Mon., Ma=
y 22, 2023, 5:47 p.m.=0AMichael MacLean via Healeys, <<a>healeys@auto=
x.team.net</a>>=0Awrote:<br></div>=0A<blockquote class=3D"gmail_quote=
" style=3D"margin:0px 0px 0px .8ex;border-left:1px solid rgb(204,204,204=
);padding-left:1ex;">=0A<div dir=3D"ltr">=0A<div>Excuse my ignorance, bu=
t can someone tell me what number 8 is=0Abolted to and where does it cla=
mp to the exhaust pipe? Anyone have=0Aa picture of this hanger in place?=
I am ordering all the=0Ahangers for the exhaust system to install=
before I take the car off=0Athe jack stands.</div>=0A<div>Mike MacLean<=
/div>=0A</div>=0A</blockquote>=0A</div>=0A</blockquote>=0A</div>=0A</div=
>=0A</div>=0A</div>=0A</blockquote>=0A</div>=0A</cnaarndt@gmail.com></bo=
dy></html>
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