--===============8104311038905273704==
boundary="_EE3960A3-5233-4B86-9045-F9CC11A95BCD_"
--_EE3960A3-5233-4B86-9045-F9CC11A95BCD_
Content-Transfer-Encoding: quoted-printable
OK I got confused on this exchanged. Regarding the UNF threads, my info sh=
ows the 3/8 (major diameter) UNF bolt as having 24 threads per inch. The ex=
change mentioned 20 TPI
Perry
From: Michael Salter
Subject: Re: [Healeys] Motor Mout Bolts
"So, now I can run a 3/8 - 20 UNF tap through the hole to clean it up. So, =
I take it all threaded holes in the engine bay are UNF."
I think that may be a stretch Mike ... I know, for example, that the nuts w=
elded into the frame for the battery hold down rods changed from BSF to UNF=
as C.#156839. I would bet that there are other instances of this.
I would always recommend checking your parts book for the correct thread fo=
r your car before running a tap through any.
M
On Sun, May 10, 2020 at 12:50 PM Michael MacLean <rrengineer.mike@att.net> =
wrote:
The only reason I asked this question in the first place was because a 3/8"=
UNF bolt screwed into all eight holes for a few threads and stopped.=C2=A0=
Because it was the same in all eight holes I did not want to force it.=C2=
=A0 So, now I can run a 3/8 - 20 UNF tap through the hole to clean it up. S=
o, I take it all threaded holes in the engine bay are UNF.=C2=A0 Certainly =
simplifies it.
Mike MacLean
On Sun, May 10, 2020 at 8:51 AM, Curtis Arndt
<cnaarndt@gmail.com> wrote:
They are UNF on my BN1 built 11 Jan. '55.=C2=A0 If they ever were BSF, it w=
as very early in BN1 production.=C2=A0
On Sat, May 9, 2020, 16:54 Perry via Healeys <healeys@autox.team.net> wrote=
:
Michael
There was a slow switch from BSF to UNF fasteners used and threads on some =
parts starting about mid 1954 through the end of 1955 at several locations =
on the 100. However I can not speak to the engine mount to chassis fastener=
s.=20
Its one of those areas of the car that if I ended up with damage to the wel=
ded nut threads that could not be cleaned up with a tap I would do what was=
necessary to secure the engine mount short of replacing the welded nut.=20
Perry
=C2=A0
From: Michael MacLean
=C2=A0
Are the bolts that fasten the motor mounts to the frame different threads b=
etween the BN1 and the BN2?
Mike MacLean
--_EE3960A3-5233-4B86-9045-F9CC11A95BCD_
Content-Transfer-Encoding: quoted-printable
<html xmlns:o=3D"urn:schemas-microsoft-com:office:office" xmlns:w=3D"urn:sc=
hemas-microsoft-com:office:word" xmlns:m=3D"http://schemas.microsoft.com/of=
fice/2004/12/omml" xmlns=3D"http://www.w3.org/TR/REC-html40";><head><meta ht=
tp-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta name=
=3DGenerator content=3D"Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Comic Sans MS";
panose-1:3 15 7 2 3 3 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72"><div cla=
ss=3DWordSection1><p class=3DMsoNormal>OK I got confused on this exchanged.=
=C2=A0 Regarding the UNF threads, my info shows the 3/8 (major diameter) UN=
F bolt as having 24 threads per inch. The exchange mentioned 20 TPI</p><p c=
lass=3DMsoNormal>Perry</p><p class=3DMsoNormal><o:p> </o:p></p><div st=
yle=3D'mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0=
pt;padding:3.0pt 0in 0in 0in'><p class=3DMsoNormal style=3D'border:none;pad=
ding:0in'><b>From: </b><a href=3D"mailto:michaelsalter@gmail.com";>Michael S=
alter</a><br><b>Subject: </b>Re: [Healeys] Motor Mout Bolts</p></div><p cla=
ss=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal><b><i><s=
pan style=3D'font-size:12.0pt;font-family:"Comic Sans MS"'>"So, now I =
can run a 3/8 - 20 UNF tap through the hole to clean it up. So, I take it a=
ll threaded holes in the engine bay are UNF."</span></i></b><span styl=
e=3D'font-size:12.0pt;font-family:"Comic Sans MS"'><o:p></o:p></span></p></=
div><div><p class=3DMsoNormal><span style=3D'font-size:12.0pt;font-family:"=
Comic Sans MS"'>I think that may be a stretch Mike ... I know, for example,=
that the nuts welded into the frame for the battery hold down rods changed=
from BSF to UNF as C.#156839. I would bet that there are other instances o=
f this.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span style=3D=
'font-size:12.0pt;font-family:"Comic Sans MS"'>I would always recommend che=
cking your parts book for the correct thread for your car before running a =
tap through any.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span=
style=3D'font-size:12.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></=
span></p></div><div><p class=3DMsoNormal><span style=3D'font-size:12.0pt;fo=
nt-family:"Comic Sans MS"'>M<o:p></o:p></span></p></div></div><p class=3DMs=
oNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On Sun, May 10,=
2020 at 12:50 PM Michael MacLean <<a href=3D"mailto:rrengineer.mike@att=
.net">rrengineer.mike@att.net</a>> wrote:</p></div><blockquote style=3D'=
border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margi=
n-left:4.8pt;margin-right:0in'><p class=3DMsoNormal>The only reason I asked=
this question in the first place was because a 3/8" UNF bolt screwed =
into all eight holes for a few threads and stopped. Because it was th=
e same in all eight holes I did not want to force it. So, now I can r=
un a 3/8 - 20 UNF tap through the hole to clean it up. So, I take it all th=
readed holes in the engine bay are UNF. Certainly simplifies it.</p><=
div id=3D"gmail-m_-5974905000147687713yMail_cursorElementTracker_1589129381=
257"><p class=3DMsoNormal style=3D'margin-bottom:12.0pt'>Mike MacLean</p><b=
lockquote style=3D'margin-left:0in;margin-right:0in;margin-bottom:15.0pt'><=
div><div><p class=3DMsoNormal><span style=3D'font-family:"Arial",sans-serif=
;color:#6D00F6'>On Sun, May 10, 2020 at 8:51 AM, Curtis Arndt<o:p></o:p></s=
pan></p></div><div><p class=3DMsoNormal><span style=3D'font-family:"Arial",=
sans-serif;color:#6D00F6'><<a href=3D"mailto:cnaarndt@gmail.com"; target=
=3D"_blank">cnaarndt@gmail.com</a>> wrote:<o:p></o:p></span></p></div></=
div><div style=3D'border:none;border-left:solid #6D00F6 1.0pt;padding:0in 0=
in 0in 15.0pt;margin-top:7.5pt'><div id=3D"gmail-m_-5974905000147687713yiv7=
438463404"><div><p class=3DMsoNormal>They are UNF on my BN1 built 11 Jan. '=
55. If they ever were BSF, it was very early in BN1 production. =
<o:p></o:p></p></div><p class=3DMsoNormal><o:p> </o:p></p><div><div><p=
class=3DMsoNormal>On Sat, May 9, 2020, 16:54 Perry via Healeys <<a href=
=3D"mailto:healeys@autox.team.net"; target=3D"_blank">healeys@autox.team.net=
</a>> wrote:</p></div><blockquote style=3D'border:none;border-left:solid=
#CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in=
'><div><div><p>Michael</p><p>There was a slow switch from BSF to UNF fasten=
ers used and threads on some parts starting about mid 1954 through the end =
of 1955 at several locations on the 100. However I can not speak to the eng=
ine mount to chassis fasteners. </p><p>Its one of those areas of the car th=
at if I ended up with damage to the welded nut threads that could not be cl=
eaned up with a tap I would do what was necessary to secure the engine moun=
t short of replacing the welded nut. </p><p>Perry</p><p> </p><div styl=
e=3D'border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0in 0in 0i=
n;border-color:currentcolor currentcolor'><p><b>From: </b><a href=3D"mailto=
:rrengineer.mike@att.net" target=3D"_blank">Michael MacLean</a><br><br></p>=
</div><p> </p><p>Are the bolts that fasten the motor mounts to the fra=
me different threads between the BN1 and the BN2?</p><div id=3D"gmail-m_-59=
74905000147687713yiv7438463404m_8389926694834509769yMail_cursorElementTrack=
er_1589058832618"><p style=3D'margin-bottom:12.0pt'>Mike MacLean</p></div><=
/div></div></blockquote></div></div></div></blockquote></div></blockquote><=
/div><p class=3DMsoNormal><o:p> </o:p></p></div></body></html>=
--_EE3960A3-5233-4B86-9045-F9CC11A95BCD_--
--===============8104311038905273704==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============8104311038905273704==--
|