Subject: Re: [TR] manual gearbox alignment bolts TR6 /Stag

From: Jack McGahey <[email-masked]>
Date: Thu, 14 Feb 2019 19:53:54 -0500

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Dowel bolt
TRF part #132872
Moss part # 322-545
Rimmer part # GHF106

These were originally dowels - not dowel bolts - I=E2=80=99m surprised to no=
w not find the dowels listed anywhere - glad I still have some

Not using the dowels or dowel bolts can result in all sorts of premature clu=
tch and throw out bearing wear - degree of premature wear can range from lit=
tle to none up to very severe - depending on how far off alignment of parts i=
s without them.

Cheers,
Jack Mc

Sent from my iPad

> On Feb 14, 2019, at 2:12 PM, Sujit Roy <[email-masked]> wrote:
>=20
> Im aware the TR6 gearbox uses two special machined bolts to align the box t=
o engine plate.
> They are positioned about 11pm and 2pm on the bell housing.
>=20
> Someone on that  forum used one at the bottom as well (slightly smaller di=
ameter bolt.)
>=20
> Has anyone else tried this and if so, where did you get the bolt?
> The Stag and TR6 bell housing are similar.
>=20
> Does anyone know if the Dolomite Sprint used the same bell housing as the T=
R6?
>=20
> Sujit
>=20
>=20
> =20
>=20
> --=20
> Sujit Roy
> Cupertino, California
>=20
> https://triumphstagblog.wordpress.com/
>=20
> ** [email-masked] **
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/triumphs  http://www.team.net/archi=
ve
>=20
> Unsubscribe/Manage: http://autox.team.net/mailman/options/triumphs/mcgahey=
[email-masked]

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">Dowel bolt<div>TRF part #132872</div><div>M=
oss part # 322-545</div><div>Rimmer part # GHF106</div><div><br></div><div>T=
hese were originally dowels - not dowel bolts - I=E2=80=99m surprised to now=
 not find the dowels listed anywhere - glad I still have some</div><div><br>=
</div><div>Not using the dowels or dowel bolts can result in all sorts of pr=
emature clutch and throw out bearing wear - degree of premature wear can ran=
ge from little to none up to very severe - depending on how far off alignmen=
t of parts is without them.</div><div><br></div><div>Cheers,</div><div>Jack M=
c<br><br><div id=3D"AppleMailSignature" dir=3D"ltr">Sent from my iPad</div><=
div dir=3D"ltr"><br>On Feb 14, 2019, at 2:12 PM, Sujit Roy &lt;<a href=3D"ma=
ilto:[email-masked]">[email-masked]</a>&gt; wrote:<br><br></di=
v><blockquote type=3D"cite"><div dir=3D"ltr"><div dir=3D"ltr">Im aware the T=
R6 gearbox uses two special machined bolts to align the box to engine plate.=
<div>They are positioned about 11pm and 2pm on the bell housing.</div><div><=
br></div><div>Someone on that&nbsp; forum used one at the bottom as well (sl=
ightly smaller diameter bolt.)</div><div><br></div><div>Has anyone else trie=
d this and if so, where did you get the bolt?</div><div>The Stag and TR6 bel=
l housing are similar.</div><div><br></div><div>Does anyone know if the Dolo=
mite Sprint used the same bell housing as the TR6?</div><div><br></div><div>=
Sujit</div><div><br></div><div><br></div><div>&nbsp;<br clear=3D"all"><div><=
br></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D=
"gmail_signature"><div dir=3D"ltr"><div>Sujit Roy<br>Cupertino, California</=
div><div><br><a href=3D"https://triumphstagblog.wordpress.com/" target=3D"_b=
lank">https://triumphstagblog.wordpress.com/</a><br><br></div></div></div></=
div></div>
</div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr"><span>** <a hr=
ef=3D"mailto:[email-masked]">[email-masked]</a> **</span><=
br><span></span><br><span>Donate: <a href=3D"http://www.team.net/donate.html=
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kquote></div></body></html>=

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Archive: http://www.team.net/pipermail/triumphs  http://www.team.net/archive

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From: Sujit Roy <[email-masked]>
Date: Fri, 15 Feb 2019 10:50:06 -0800

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Hi Jack. Thanks.
I was under the impression that the plain shank should ideally be long
enough to clear the box and engine plate, but from the Moss photo, this may
not be so.

TRF no longer carries this. I think Moss has a $10 min. purchase. But this
is better than a regular bolt.

Regards, Sujit

On Thu, Feb 14, 2019 at 4:53 PM Jack McGahey <[email-masked]> wrote:

> Dowel bolt
> TRF part #132872
> Moss part # 322-545
> Rimmer part # GHF106
>
> These were originally dowels - not dowel bolts - I=E2=80=99m surprised to=
 now not
> find the dowels listed anywhere - glad I still have some
>
> Not using the dowels or dowel bolts can result in all sorts of premature
> clutch and throw out bearing wear - degree of premature wear can range fr=
om
> little to none up to very severe - depending on how far off alignment of
> parts is without them.
>
> Cheers,
> Jack Mc
>
> Sent from my iPad
>
> Im aware the TR6 gearbox uses two special machined bolts to align the box
> to engine plate.
> Someone on that  forum used one at the bottom as well (slightly smaller
> diameter bolt.)
>
> Does anyone know if the Dolomite Sprint used the same bell housing as the
> TR6?
>
> Sujit
>
>
>
>
> --
> Sujit Roy
> Cupertino, California
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/triumphs/[email-masked]
>
>

--=20
Sujit Roy
Cupertino, California

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<div dir=3D"ltr">Hi Jack. Thanks.<div>I was under the impression that the p=
lain shank should ideally be long enough to clear the box and engine plate,=
 but from the Moss photo, this may not be so.</div><div><br></div><div>TRF =
no longer carries this. I think Moss has a $10 min. purchase. But this is b=
etter than a regular bolt.=C2=A0</div><div><br></div><div><br></div><div>Re=
gards, Sujit</div><div><br></div><div><br></div></div><br><div class=3D"gma=
il_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Feb 14, 2019 at 4:5=
3 PM Jack McGahey &lt;<a href=3D"mailto:[email-masked]">[email-masked]=
m</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin=
:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"=
><div dir=3D"auto">Dowel bolt<div>TRF part #132872</div><div>Moss part # 32=
2-545</div><div>Rimmer part # GHF106</div><div><br></div><div>These were or=
iginally dowels - not dowel bolts - I=E2=80=99m surprised to now not find t=
he dowels listed anywhere - glad I still have some</div><div><br></div><div=
>Not using the dowels or dowel bolts can result in all sorts of premature c=
lutch and throw out bearing wear - degree of premature wear can range from =
little to none up to very severe - depending on how far off alignment of pa=
rts is without them.</div><div><br></div><div>Cheers,</div><div>Jack Mc<br>=
<br><div id=3D"gmail-m_4838086873557469707AppleMailSignature" dir=3D"ltr">S=
ent from my iPad</div><div dir=3D"ltr"><br>On Feb 14, 2019, at 2:12 PM, Suj=
it Roy &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">trium=
[email-masked]</a>&gt; wrote:<br><br></div><blockquote type=3D"cite"><div=
 dir=3D"ltr"><div dir=3D"ltr">Im aware the TR6 gearbox uses two special mac=
hined bolts to align the box to engine plate.<div>They are positioned about=
 11pm and 2pm on the bell housing.</div><div><br></div><div>Someone on that=
=C2=A0 forum used one at the bottom as well (slightly smaller diameter bolt=
.)</div><div><br></div><div>Has anyone else tried this and if so, where did=
 you get the bolt?</div><div>The Stag and TR6 bell housing are similar.</di=
v><div><br></div><div>Does anyone know if the Dolomite Sprint used the same=
 bell housing as the TR6?</div><div><br></div><div>Sujit</div><div><br></di=
v><div><br></div><div>=C2=A0<br clear=3D"all"><div><br></div>-- <br><div di=
r=3D"ltr" class=3D"gmail-m_4838086873557469707gmail_signature"><div dir=3D"=
ltr"><div>Sujit Roy<br>Cupertino, California</div><div><br><a href=3D"https=
://triumphstagblog.wordpress.com/" target=3D"_blank">https://triumphstagblo=
g.wordpress.com/</a><br><br></div></div></div></div></div>
</div></blockquote><blockquote type=3D"cite"><div dir=3D"ltr"><span>** <a h=
ref=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
m.net</a> **</span><br><span></span><br><span>Donate: <a href=3D"http://www=
.team.net/donate.html" target=3D"_blank">http://www.team.net/donate.html</a=
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s" target=3D"_blank">http://www.team.net/pipermail/triumphs</a> =C2=A0<a hr=
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chive</a></span><br><span></span><br><span>Unsubscribe/Manage: <a href=3D"h=
ttp://autox.team.net/mailman/options/triumphs/[email-masked]" target=3D"=
_blank">http://autox.team.net/mailman/options/triumphs/[email-masked]</a=
></span><br></div></blockquote></div></div></blockquote></div><br clear=3D"=
all"><div><br></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature"><div =
dir=3D"ltr"><div>Sujit Roy<br>Cupertino, California</div><div><br><a href=
=3D"https://triumphstagblog.wordpress.com/" target=3D"_blank">https://trium=
phstagblog.wordpress.com/</a><br><br></div></div></div>

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From: "Randall" <[email-masked]>
Date: Fri, 15 Feb 2019 12:38:48 -0800 boundary="----=_NextPart_000_0211_01D4C52B.67C50DE0"

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The TR6 parts catalog is somewhat confusing, as it has both listed.  Make of
that what you will; but since TR2-4A did use a dowel, it seems likely to me
that someone deliberately added the dowel bolt and missed removing the
earlier dowel entry.  (One is under the engine section, the other in the
gearbox section.)  My take is that changing to the bolt was part of the
changes to make that joint stronger (the casting also got beefed up in that
area).

Although the bellhousing is similar between TR6 and Stag, on the TR6 those
bolts go through the steel engine back plate; while the Stag has a thicker
alloy "flywheel housing".  Thus, the Stag dowel bolts are supposed to be
slightly longer than TR6.

I couldn't locate any at the time (except for vendors trying to sell
ordinary bolts instead of the precision shank ones), so I made my own.  3/8"
precision "drill rod" is readily available from sources like McMaster-Carr
and not terribly expensive.  (A 3' section of 3/8" O1 drill rod is under $10
at MMC.)  I just cut some sections to length, and threaded both ends for
nuts.  The rod is supplied annealed, so it's not too difficult to thread.
You'll want a good sharp die, though, even annealed that tool steel is tough
stuff.

If you want, you can then harden it; but I didn't bother.

Dowels are still readily available, from the usual suspects or from MMC.
TRF P/N DP612

-- Randall 
56 TR3 TS13571L once and future daily driver
71 Stag LE1473 - awaiting engine rebuild
71-2-3 Stag - awaiting gearbox rebuild 

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