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Joe,
The Roadster Factory has a higher quality, stock type tensioner for
the TR3/4 (and also versions for the TR6/GT6/Spitfires). These have
worked well for me.
https://www.trfbasic.com/shop/p/43404-tensioner
Jason Sukey
JS Performance Motoring, LLC
440.984.7720
jason@jsperformancemotoring.com
www.jspmparts.com
https://www.facebook.com/JSPerformanceMotoring/
On Tue, Aug 11, 2026 at 6:26=E2=80=AFPM Joe Boruch <jaboruch@yahoo.com> wro=
te:
> Amici, my TR3 engine seized at Lime Rock back in June. Finally got aroun=
d
> to pulling the engine and tearing it down. Found a broken timing chain
> along with pieces of the tensioner and that the retaining pin for the
> tensioner was broken off of the front plate. The chain had many laps on =
it
> - I probably should just change it with each refresh, rather than reusing
> it.
>
> Any suggestions on better chains and tensioners? I see that Moss sells a=
n
> "uprated" chain for about $70 compared to under $15 for other chains. It=
's
> worth the $70 if it lasts, but is it really better?
>
> Also need an adjustable cam gear. I had been using one from Cambridge
> Motorsports that I had for many years. Any suggestions?
>
> I have found broken tensioners in previous tear downs, but they were
> caught before causing anything worse. Does anyone sell or fabricate and
> uprated tensioner similar to what MGs use? I see that Racetorations make=
s
> one for TR5/6s.
>
> Joe(B)
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage <http://www.team.net/pipermail/fotUnsubscribe/Manage>:
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>
>
>
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<div dir=3D"ltr"><div>Joe,</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0The Roadste=
r Factory has a higher quality, stock type tensioner for the TR3/4 (and als=
o=C2=A0 versions for the TR6/GT6/Spitfires).=C2=A0 These have worked well f=
or me.</div><div><a href=3D"https://www.trfbasic.com/shop/p/43404-tensioner=
">https://www.trfbasic.com/shop/p/43404-tensioner</a></div><div><br></div><=
div><br></div><div><div dir=3D"ltr" class=3D"gmail_signature" data-smartmai=
l=3D"gmail_signature"><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=
=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div>Jason Sukey</div><div><span=
></span><span></span>JS Performance Motoring, LLC<br></div><div>440.984.772=
0</div><div><a href=3D"mailto:jason@jsperformancemotoring.com"; target=3D"_b=
lank">jason@jsperformancemotoring.com</a><br></div><div><a href=3D"http://w=
ww.jspmparts.com" target=3D"_blank">www.jspmparts.com</a></div><div><a href=
=3D"https://www.facebook.com/JSPerformanceMotoring/"; target=3D"_blank">http=
s://www.facebook.com/JSPerformanceMotoring/</a><br></div></div></div></div>=
</div></div></div></div></div></div><br></div><br><div class=3D"gmail_quote=
gmail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Aug 1=
1, 2026 at 6:26=E2=80=AFPM Joe Boruch <<a href=3D"mailto:jaboruch@yahoo.=
com">jaboruch@yahoo.com</a>> 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><div style=3D"font-family:"Helvetica Neue&=
quot;,Helvetica,Arial,sans-serif;font-size:13px"><div dir=3D"ltr">Amici, my=
TR3 engine seized at Lime Rock back in June.=C2=A0 Finally got around to p=
ulling the engine and tearing it down.=C2=A0 Found a broken timing chain al=
ong with pieces of the tensioner and that the retaining pin for the tension=
er was broken off of the front plate.=C2=A0 The chain had many laps on it -=
I probably should just change it with each refresh, rather than reusing it=
.</div><div dir=3D"ltr"><br></div><div dir=3D"ltr">Any suggestions on bette=
r chains and tensioners?=C2=A0 I see that Moss sells an "uprated"=
chain for about $70 compared to under $15 for other chains.=C2=A0 It's=
worth the $70 if it lasts, but is it really better?</div><div dir=3D"ltr">=
<br></div><div dir=3D"ltr">Also need an adjustable cam gear.=C2=A0 I had be=
en using one from Cambridge Motorsports that I had for many years.=C2=A0 An=
y suggestions?</div><div dir=3D"ltr"><br></div><div dir=3D"ltr">I have foun=
d broken tensioners in previous tear downs, but they were caught before cau=
sing anything worse.=C2=A0 Does anyone sell or fabricate and uprated tensio=
ner similar to what MGs use?=C2=A0 I see that Racetorations makes one for T=
R5/6s. =C2=A0</div><div dir=3D"ltr"><br></div><div dir=3D"ltr">Joe(B)</div>=
</div></div>_______________________________________________<br>
<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net<=
/a><br>
<br>
<a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" target=3D"_blank">=
http://www.fot-racing.com</a><br>
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et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" targe=
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et/pipermail/fotUnsubscribe/Manage" rel=3D"noreferrer" target=3D"_blank">ht=
tp://www.team.net/pipermail/fot<br>
t/jason@jsperformancemotoring.com" rel=3D"noreferrer" target=3D"_blank">htt=
p://autox.team.net/mailman/options/fot/jason@jsperformancemotoring.com</a><=
br>
<br>
<br>
</blockquote></div>
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_______________________________________________
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Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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