[6pack] Engine restoration, abbreviated

[Richard Lindsay via 6pack <6pack@autox.team.net>]

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Hello again Friends,
   The following is an abbreviated story, with pictures, of the
resurrection of my TR6 engine. The car hadn't run in decades, I am told,
but the engine looked pretty good. Here's a first look.

http://aubard.us/75_Triumph/P1000408.JPG

   First step was to pull the plugs, squirt in about 1cc of oil, and turn
the engine over by hand. Everything turned smoothly. I next changed the oil
and filter, connected a battery, pulled the fuses out, and spun the engine
for a second or two on the starter. Everything turned smoothly.
   Next step, a compression test. Given a 1975 U.S. specification engine
with a compression ratio of 7.75:1, the perfect static pressure would be
about 114psi. My engine's initial (cold) compression readings are:






*1  115 psi 2  106 psi 3  103 psi 4  111 psi 5  102 psi 6  111 psi*

   Considering that this engine hadn't run in ages and the condition of the
valve and their seats was unknown, I decided to *not* open the engine
unless further tests indicated that doing so was warranted.
   I next removed the valve cover and found a clean rocker shaft and
springs. And with the cover of off, I cleaned and refinished it. Lots of
other bits got cleaned and refinished at the same time.
   The waterpump and thermostat were replaced. All hoses are new. The
radiator was flushed and pressure tested. A new fan belt was installed and
the cooling system was flushed.
   The Z-S carbs were rebuilt and reinstalled on new gaskets. The fuel line
was disconnected and flushed clean. The tank was boiled out and no
corrosion was found.
   Earlier I posted a picture or two of the electric fuel pump I used.
Here's one of the pictures again.

http://aubard.us/75_Triumph/20190722_091448.jpg

   I removed all the non-functional emissions bits including the air
injection plumbing. The pipe fittings on the manifold were not coming off
by any means known to man so...I sawed off the pipes and plugged them with
bolts and ultra high temperature cement. Here's how they looked before
'surgery'.

http://aubard.us/75_Triumph/20190514_091212.jpg

   Before going on and on, as I am want to do, here is the engine and it's
bay. This is before balancing the carbs and installing the refinished air
cleaner with a new element. It now starts easily and runs great!

http://aubard.us/75_Triumph/20190515_120747.jpg

   I've left out the bit about omitting a waterpump bolt and causing a
leak. And probably other little issues like a new alternator, but you get
the gist.

Rick

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<div dir=3D"auto">Hello again Friends,<div dir=3D"auto">=C2=A0 =C2=A0The fo=
llowing is an abbreviated story, with pictures, of the resurrection of my T=
R6 engine. The car hadn&#39;t run in decades, I am told, but the engine loo=
ked pretty good. Here&#39;s a first look.=C2=A0</div><div dir=3D"auto"><br>=
</div><div dir=3D"auto"><a href=3D"http://aubard.us/75_Triumph/P1000408.JPG=
" target=3D"_blank" rel=3D"noreferrer">http://aubard.us/75_Triumph/P1000408=
.JPG</a><br></div><div dir=3D"auto"><br></div><div dir=3D"auto">=C2=A0 =C2=
=A0First step was to pull the plugs, squirt in about 1cc of oil, and turn t=
he engine over by hand. Everything turned smoothly. I next changed the oil =
and filter, connected a battery, pulled the fuses out, and spun the engine =
for a second or two on the starter. Everything turned smoothly.=C2=A0</div>=
<div dir=3D"auto">=C2=A0 =C2=A0Next step, a compression test. Given a 1975 =
U.S. specification engine with a compression ratio of 7.75:1, the perfect s=
tatic pressure would be about 114psi. My engine&#39;s=C2=A0<span style=3D"f=
ont-family:sans-serif">initial (cold) compression readings are:</span></div=
><div dir=3D"auto"><br>
</div><div dir=3D"auto"><font color=3D"#f44336"><b>1 =C2=A0115 psi<br>
2 =C2=A0106 psi<br>
3 =C2=A0103 psi<br>
4 =C2=A0111 psi<br>
5 =C2=A0102 psi<br>
6 =C2=A0111 psi</b></font><br></div><div dir=3D"auto"><font color=3D"#f4433=
6"><b><br></b></font></div><div dir=3D"auto">=C2=A0 =C2=A0Considering that =
this engine hadn&#39;t run in ages and the condition of the valve and their=
 seats was unknown, I decided to <u>not</u> open the engine unless further =
tests indicated that doing so was warranted.=C2=A0</div><div dir=3D"auto">=
=C2=A0 =C2=A0I next removed the valve cover and found a clean rocker shaft =
and springs. And with the cover of off, I cleaned and refinished it. Lots o=
f other bits got cleaned and refinished at the same time.</div><div dir=3D"=
auto">=C2=A0 =C2=A0The waterpump and thermostat were replaced. All hoses ar=
e new. The radiator was flushed and pressure tested. A new fan belt was ins=
talled and the cooling system was flushed.</div><div dir=3D"auto">=C2=A0 =
=C2=A0The Z-S carbs were rebuilt and reinstalled on new gaskets. The fuel l=
ine was disconnected and flushed clean. The tank was boiled out and no corr=
osion was found.</div><div dir=3D"auto">=C2=A0 =C2=A0Earlier I posted a pic=
ture or two of the electric fuel pump I used. Here&#39;s one of the picture=
s again.</div><div dir=3D"auto"><br></div><div dir=3D"auto"><a href=3D"http=
://aubard.us/75_Triumph/20190722_091448.jpg" target=3D"_blank" rel=3D"noref=
errer">http://aubard.us/75_Triumph/20190722_091448.jpg</a><br></div><div di=
r=3D"auto"><br></div><div dir=3D"auto">=C2=A0 =C2=A0I removed all the non-f=
unctional emissions bits including the air injection plumbing. The pipe fit=
tings on the manifold were not coming off by any means known to man so...I =
sawed off the pipes and plugged them with bolts and ultra high temperature =
cement. Here&#39;s how they looked before=C2=A0 &#39;surgery&#39;.</div><di=
v dir=3D"auto"><br></div><div dir=3D"auto"><a href=3D"http://aubard.us/75_T=
riumph/20190514_091212.jpg" target=3D"_blank" rel=3D"noreferrer">http://aub=
ard.us/75_Triumph/20190514_091212.jpg</a><br></div><div dir=3D"auto"><br></=
div><div dir=3D"auto">=C2=A0 =C2=A0Before going on and on, as I am want to =
do, here is the engine and it&#39;s bay. This is before balancing the carbs=
 and installing the refinished air cleaner with a new element. It now start=
s easily and runs great!</div><div dir=3D"auto"><br></div><div dir=3D"auto"=
><a href=3D"http://aubard.us/75_Triumph/20190515_120747.jpg"; target=3D"_bla=
nk" rel=3D"noreferrer">http://aubard.us/75_Triumph/20190515_120747.jpg</a><=
br></div><div dir=3D"auto"><br></div><div dir=3D"auto">=C2=A0 =C2=A0I&#39;v=
e left out the bit about omitting a waterpump bolt and causing a leak. And =
probably other little issues like a new alternator, but you get the gist.</=
div><div dir=3D"auto"><br></div><div dir=3D"auto">Rick</div></div>

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