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Re: [TR] Manual gearbox with J type OD

To: "'Sujit Roy'" <triumphstag@gmail.com>
Subject: Re: [TR] Manual gearbox with J type OD
From: "John Macartney" <john.macartney@ukpips.org.uk>
Date: Tue, 30 Jun 2020 19:04:32 +0100
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Hi, Sujit

 

In answer to your query, very likely. I never got really close to engineeri=
ng variances because I was in Export Sales but part of the job was to study=
 and remember all the Engineering Change Bulletins and Service campaign cha=
nges. It makes sense to have an engine plate that would cover both engines =
and especially for Stag. What many people don=E2=80=99t know is that the St=
ag was originally going to have the TR6 2498cc engine as standard for all m=
arkets except North America where the V8 was to be a standard fitting with =
the V8 also being optional for all other markets. The decision to fit the V=
8 for all markets was taken very late in the day. I doubt there would be di=
fferent engine mounts for the in-line or V8 because quite a large number of=
 Stags in the UK have been retro fitted with the 2498cc engine, suitably tu=
ned with twin SU carbs, a. TR5 cylinder head and camshaft and they are just=
 a quick as the V8. The only thing missing is the V8 noise. Upgrading the a=
xle ratio from the original 3.7:1 unit in favour of one from the fuel injec=
ted saloon of 3.45:1 is another improvement, especially with a four speed B=
org Warner or ZF slush box from a Volvo or BMW.

 

As you may know, the Stag body was a shorter version of the larger saloon c=
ar whose monocoque body was exceptionally rigid. I do clearly recall the to=
rsional rigidity of the saloon was exceptional for its day, requiring 6,500=
 lbs/ft of torque to twist it one degree. By Michelotti revamping the saloo=
n into an open top tourer, much of that rigidity would be lost and that is =
why the =E2=80=98T=E2=80=99 bar was fitted. It wasn=E2=80=99t quite as twis=
t resistant as the saloon, but good enough. At least you didn=E2=80=99t hav=
e to call on brute strength to line up the soft or hard top to engage the l=
ocking pegs on the screen rail.  

 

Hope this helps. 

 

Jonmac

 

From: Sujit Roy <triumphstag@gmail.com> 
Sent: 30 June 2020 17:27
To: John Macartney <John.Macartney@ukpips.org.uk>
Cc: Triumphs <triumphs@autox.team.net>
Subject: Re: [TR] Manual gearbox with J type OD

 

Hello Jonmac,

Thanks for your email. On the Stag, the engine appears level. The offset is=
 taken up by the engine plate. I dont have my parts book with me but was th=
at engine plate repurposed from a Triumph 2000, 2.5 as there are some oddit=
ies on it which don't match up with the bell housing on the Stag.

Regards, Sujit

 

On Tue, Jun 30, 2020 at 4:19 AM John Macartney <John.Macartney@ukpips.org.u=

The in line six engine was tilted by six degrees on the Triumph 2000 and 25=
00 to achieve a low bonnet line. As the Stag was originally planned to have=
 two engines - the 2500 six and the V8, the position of the engine mounts w=
as clearly never changed.

 

Jonmac

At the Battle of Waterloo, 1815:

Lord Uxbridge:  =E2=80=9CBy God, Sir - I=E2=80=99ve lost my leg=E2=80=9D

Duke of Wellington: =E2=80=9CBy God, Sir - so you have!=E2=80=9D

 


tag@gmail.com> > wrote:


 


While installing the gearbox this weekend on a Stag, I noticed the gearbox =
is very slightly tilted to the right. I'm wondering if the TR6 which shares=
 a similar looking box is also tilted?

If it is does anyone know why?

Sujit

Sujit Roy
Cupertino, California


https://triumphstagblog.wordpress.com/


Archive: http://www.team.net/pipermail/triumphs  http://www.team.net/archiv=
e

artney@ukpips.org.uk




 

-- 

Sujit Roy
Cupertino, California


https://triumphstagblog.wordpress.com/



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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue vli=
nk=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span style=3D'f=
ont-size:12.0pt;mso-fareast-language:EN-US'>Hi, Sujit<o:p></o:p></span></p>=
<p class=3DMsoNormal><span style=3D'font-size:12.0pt;mso-fareast-language:E=
N-US'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span style=3D'font-=
size:12.0pt;mso-fareast-language:EN-US'>In answer to your query, very likel=
y. I never got really close to engineering variances because I was in Expor=
t Sales but part of the job was to study and remember all the Engineering C=
hange Bulletins and Service campaign changes. It makes sense to have an eng=
ine plate that would cover both engines and especially for Stag. What many =
people don=E2=80=99t know is that the Stag was originally going to have the=
 TR6 2498cc engine as standard for all markets except North America where t=
he V8 was to be a standard fitting with the V8 also being optional for all =
other markets. The decision to fit the V8 for all markets was taken very la=
te in the day. I doubt there would be different engine mounts for the in-li=
ne or V8 because quite a large number of Stags in the UK have been retro fi=
tted with the 2498cc engine, suitably tuned with twin SU carbs, a. TR5 cyli=
nder head and camshaft and they are just a quick as the V8. The only thing =
missing is the V8 noise. Upgrading the axle ratio from the original 3.7:1 u=
nit in favour of one from the fuel injected saloon of 3.45:1 is another imp=
rovement, especially with a four speed Borg Warner or ZF slush box from a V=
olvo or BMW.<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-=
size:12.0pt;mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><p clas=
s=3DMsoNormal><span style=3D'font-size:12.0pt;mso-fareast-language:EN-US'>A=
s you may know, the Stag body was a shorter version of the larger saloon ca=
r whose monocoque body was exceptionally rigid. I do clearly recall the tor=
sional rigidity of the saloon was exceptional for its day, requiring 6,500 =
lbs/ft of torque to twist it one degree. By Michelotti revamping the saloon=
 into an open top tourer, much of that rigidity would be lost and that is w=
hy the =E2=80=98T=E2=80=99 bar was fitted. It wasn=E2=80=99t quite as twist=
 resistant as the saloon, but good enough. At least you didn=E2=80=99t have=
 to call on brute strength to line up the soft or hard top to engage the lo=
cking pegs on the screen rail. =C2=A0<o:p></o:p></span></p><p class=3DMsoNo=
rmal><span style=3D'font-size:12.0pt;mso-fareast-language:EN-US'><o:p>&nbsp=
;</o:p></span></p><p class=3DMsoNormal><span style=3D'font-size:12.0pt;mso-=
fareast-language:EN-US'>Hope this helps. <o:p></o:p></span></p><p class=3DM=
soNormal><span style=3D'font-size:12.0pt;mso-fareast-language:EN-US'><o:p>&=
nbsp;</o:p></span></p><p class=3DMsoNormal><span style=3D'font-size:12.0pt;=
mso-fareast-language:EN-US'>Jonmac<o:p></o:p></span></p><p class=3DMsoNorma=
l><span style=3D'mso-fareast-language:EN-US'><o:p>&nbsp;</o:p></span></p><d=
iv style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0c=
m 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US>From:</span></b><span lan=
g=3DEN-US> Sujit Roy &lt;triumphstag@gmail.com&gt; <br><b>Sent:</b> 30 June=
 2020 17:27<br><b>To:</b> John Macartney &lt;John.Macartney@ukpips.org.uk&g=
t;<br><b>Cc:</b> Triumphs &lt;triumphs@autox.team.net&gt;<br><b>Subject:</b=
> Re: [TR] Manual gearbox with J type OD<o:p></o:p></span></p></div><p clas=
s=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>Hello Jonmac,<=
o:p></o:p></p><div><p class=3DMsoNormal>Thanks for your email. On the Stag,=
 the engine appears level. The offset&nbsp;is taken up by the engine plate.=
 I dont&nbsp;have my parts book with me but was that engine&nbsp;plate repu=
rposed from a Triumph 2000, 2.5 as there&nbsp;are some oddities on it which=
 don't&nbsp;match up with the&nbsp;bell housing on the Stag.<o:p></o:p></p>=
</div><div><p class=3DMsoNormal>Regards, Sujit<o:p></o:p></p></div></div><p=
 class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On T=
ue, Jun 30, 2020 at 4:19 AM John Macartney &lt;<a href=3D"mailto:John.Macar=
tney@ukpips.org.uk">John.Macartney@ukpips.org.uk</a>&gt; wrote:<o:p></o:p><=
/p></div><blockquote style=3D'border:none;border-left:solid #CCCCCC 1.0pt;p=
adding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><p class=
=3DMsoNormal>The in line six engine was tilted by six degrees on the Triump=
h 2000 and 2500 to achieve a low bonnet line. As the Stag was originally pl=
anned to have two engines - the 2500 six and the V8, the position of the en=
gine mounts was clearly never changed.<o:p></o:p></p><div><p class=3DMsoNor=
mal><o:p>&nbsp;</o:p></p></div><div><p class=3DMsoNormal style=3D'margin-bo=
ttom:12.0pt'>Jonmac<o:p></o:p></p><div id=3D"gmail-m_1436546667506141566App=
leMailSignature"><p class=3DMsoNormal>At the Battle of Waterloo, 1815:<o:p>=
</o:p></p><div><p class=3DMsoNormal>Lord Uxbridge: &nbsp;=E2=80=9CBy God, S=
ir - I=E2=80=99ve lost my leg=E2=80=9D<o:p></o:p></p></div><div><p class=3D=
MsoNormal>Duke of Wellington: =E2=80=9CBy God, Sir - so you have!=E2=80=9D<=
o:p></o:p></p></div><div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></=
div><div><p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><br>On 30 Jun =
2020, at 00:50, Sujit Roy &lt;<a href=3D"mailto:triumphstag@gmail.com"; targ=
et=3D"_blank">triumphstag@gmail.com</a>&gt; wrote:<o:p></o:p></p></div><blo=
ckquote style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><div><div><h2 s=
tyle=3D'margin:0cm;margin-bottom:.0001pt;background:#EBF4F9;vertical-align:=
baseline;font-size:1.6rem'><span style=3D'font-family:"Arial",sans-serif;co=
lor:#111111'><o:p>&nbsp;</o:p></span></h2></div><p class=3DMsoNormal>While =
installing the gearbox this weekend on a Stag, I noticed the gearbox is ver=
y slightly tilted to the right. I'm wondering if the TR6 which shares a sim=
ilar looking box is also tilted?<o:p></o:p></p><div><p class=3DMsoNormal>If=
 it is does anyone know why?<o:p></o:p></p></div><div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>Sujit<o:p></o:p></p><div><div><div><p class=
=3DMsoNormal>Sujit Roy<br>Cupertino, California<o:p></o:p></p></div><div><p=
 class=3DMsoNormal style=3D'margin-bottom:12.0pt'><br><a href=3D"https://tr=
iumphstagblog.wordpress.com/" target=3D"_blank">https://triumphstagblog.wor=
dpress.com/</a><o:p></o:p></p></div></div></div></div></div></div></blockqu=
ote><blockquote style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p clas=
s=3DMsoNormal>** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blan=
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iv><p class=3DMsoNormal>-- <o:p></o:p></p><div><div><div><p class=3DMsoNorm=
al>Sujit Roy<br>Cupertino, California<o:p></o:p></p></div><div><p class=3DM=
soNormal style=3D'margin-bottom:12.0pt'><br><a href=3D"https://triumphstagb=
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