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Just a couple random thoughts here. One, I could not figure out from your
message where exactly you ended up putting the electric pump. My
understanding is most electric pumps like to push better than the like to
pull, MG and Healey pumps are mounted close to the tank and low in back,
that would be a good place for the new TR electric pump. You seem somewhat
concerned about originality.
Second, mechanical pump rebuild kits are readily available and not too hard
to fit. There are lots of things I remember about rebuilding my TR ten
years ago, rebuilding the pump is not one of them, so it must have been
fairly easy to do and worked (and has been working fine for ten years).
Good Luck
Greg Lemon
TR250
On Mon, Aug 10, 2020, 10:43 PM staffel <staffel@comcast.net> wrote:
>
> Several years ago on an evening club drive in the Catoctin Mts of
> Maryland my TR4 developed running/ hesitation issues. Then it got dark &
> started to rain. Could not drive the car steady over 45mph. Typical fuel
> flow clogging issue symptoms. Fortunately we made it into Fredericksburg
> and a Motel.
>
> Next morning, still raining, the issue was apparent: in the bottom of the
> Glass fuel bowl- a pile of 'rust dust'. Cleaned the bowl & nursed the car
> home 30 miles, but it kept dying. Fortunately a Jag club friend came by and
> got his trailer & towed me home.
>
> Further examination determined sediment also in the CD carbs fuel bowls.
> So much for the fuel pump 'screen' being 'effective'.
>
> Also examination of the fuel pump (original) revealed a weak diaphragm, so
> while working on the carbs, ordered a new pump from TRF.
>
> A few months later got everything back together. The engine started right
> up & ran fine. But no matter how I tried to seal the threads on fuel feed
> of the original curved pipe inlet 'nut' to the new pump ( pipe dope,
> teflon tape, rtv) the leak wouldn't stop.
>
> Magnifying glass exam of the original Triumph Male pipe 'nut' and the
> female threaded bore of the new TRF pump revealed a slight thread mismatch
> - Chinese machining. It was not Metric either.
>
> So after talking with TRF, I decided to forget the mechanical pump and
> install an electric pump, ala Jaguar V12s & Jensen Healey / GTs (Lotus 907).
>
> Well, I installed a couple of different new electric pumps adjacent to
> the mechanical pump.
>
> They would never 'self prime'.
>
> Now, returning to the project. I removed the mechanical pump, & DRAINED
> the tank of the old fuel. It seems that the gravity feed when the tank is
> less than 1/2 full requires the elec pump to be very low ( like the
> original input height of the original pump, to receive fuel.
>
> So I am redetailing the frame (cleaning & new paint) and securing the new
> fuel line, inline glass Filter & elec pump right on the frame. This allows
> the steel feed line from the tank ( after Dremel Tool cutting) to match the
> new location of the electric pump.
>
> Next will be modifying a new copper fuel line ( semblance of originality)
> to meet the elec pump feed right behind & adjacent to the Water pump. The
> original copper pipe mated to the back of the mechanical pump , ran up and
> forward along the engine at the cylinder head level to the front of the
> engine & then across to the carburetor feeds.
>
> Finally hope this resolves the fuel delivery issue.
>
> I wanted to share a warning about the TRF pump supplier manufacturing
> glitch. So others can not waste years getting their TRs back to Roadworthy
> status.
>
> Obviously not going to drive a car with weeping fuel near a hot engine. At
> least on the TR4 & 6s, ( unlike Jaguar 6s ( have 2) or V12s ( have 3),
> Jensen GTs ( have 3) ; the exhaust Manifolds are on the opposite side of
> the engine.
>
> Sherman D Taffel
> Columbia MD and Goldvein VA
> 65 TR4 CT 50054L
> ( per VTR the last known TR4 produced & shipped to USA)
>
>
> Sent via the Samsung Galaxy S10, an AT&T 5G Evolution capable smartphone
>
>
> Sent via the Samsung Galaxy S10, an AT&T 5G Evolution capable smartphone
>
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/triumphs
> http://www.team.net/archive
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/triumphs/grglmn@gmail.com
>
--00000000000007e22505ac9213b5
Content-Transfer-Encoding: quoted-printable
<div dir=3D"auto">Just a couple random thoughts here.=C2=A0 One, I could no=
t figure out from your message where exactly you ended up putting the elect=
ric pump.=C2=A0 My understanding is most electric pumps like to push better=
than the like to pull, MG and Healey pumps are mounted close to the tank a=
nd low in back, that would be a good place for the new TR electric pump.=C2=
=A0 You seem somewhat concerned about originality.=C2=A0=C2=A0<div dir=3D"a=
uto"><br></div><div dir=3D"auto">Second, mechanical pump rebuild kits are r=
eadily available and not too hard to fit.=C2=A0 There are lots of things I =
remember about rebuilding my TR ten years ago, rebuilding the pump is not o=
ne of them, so it must have been fairly easy to do and worked (and has been=
working fine for ten years).</div><div dir=3D"auto"><br></div><div dir=3D"=
auto">Good Luck</div><div dir=3D"auto"><br></div><div dir=3D"auto">Greg Lem=
on</div><div dir=3D"auto">TR250<br><div dir=3D"auto"><br></div><div dir=3D"=
auto"><br></div></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr"=
class=3D"gmail_attr">On Mon, Aug 10, 2020, 10:43 PM staffel <<a href=3D=
"mailto:staffel@comcast.net";>staffel@comcast.net</a>> wrote:<br></div><b=
lockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px =
#ccc solid;padding-left:1ex"><div dir=3D"auto">
<div dir=3D"auto"><br></div><div dir=3D"auto"><div dir=3D"auto"><font face=
=3D"sans-serif">Several years ago on an evening=C2=A0 club drive in the Cat=
octin Mts of Maryland my TR4 developed running/ hesitation issues. Then it =
got dark & started to rain. Could not drive the car steady over 45mph. =
Typical fuel flow clogging issue symptoms. Fortunately we made it into Fred=
ericksburg and a Motel.</font></div><div dir=3D"auto"><font face=3D"sans-se=
rif"><br></font></div><div dir=3D"auto"><font face=3D"sans-serif">Next morn=
ing, still raining,=C2=A0 the issue was apparent: in the bottom of the Glas=
s fuel bowl- a pile of 'rust dust'.=C2=A0 Cleaned the bowl & nu=
rsed the car home 30 miles, but it kept dying. Fortunately a Jag club frien=
d came by and got his trailer & towed me home.</font></div><div dir=3D"=
auto"><font face=3D"sans-serif"><br></font></div><div dir=3D"auto"><font fa=
ce=3D"sans-serif">Further examination determined sediment also in the CD ca=
rbs fuel bowls. So much for the fuel pump 'screen' being 'effec=
tive'.</font></div><div dir=3D"auto"><font face=3D"sans-serif"><br></fo=
nt></div><div dir=3D"auto"><font face=3D"sans-serif">Also examination of th=
e fuel pump (original) revealed a weak diaphragm, so while working on the c=
arbs, ordered a new pump from TRF.=C2=A0</font></div><div dir=3D"auto"><fon=
t face=3D"sans-serif"><br></font></div><div dir=3D"auto"><font face=3D"sans=
-serif">A few months later got everything back together.=C2=A0 The engine s=
tarted right up & ran fine. But no matter how I tried to seal the threa=
ds on fuel feed of the original=C2=A0 curved pipe inlet 'nut' to th=
e new pump ( pipe dope, teflon tape, rtv) the leak wouldn't stop.=C2=A0=
</font></div><div dir=3D"auto"><font face=3D"sans-serif"><br></font></div><=
div dir=3D"auto"><font face=3D"sans-serif">Magnifying glass exam of the ori=
ginal Triumph=C2=A0 Male pipe 'nut' and the female threaded bore of=
the new TRF pump revealed a slight thread mismatch - Chinese machining. It=
was not Metric either.=C2=A0</font></div><div dir=3D"auto"><font face=3D"s=
ans-serif"><br></font></div><div dir=3D"auto"><font face=3D"sans-serif">So =
after talking with TRF, I decided to forget the mechanical pump and install=
an electric pump, ala=C2=A0Jaguar V12s & Jensen Healey / GTs (Lotus 90=
7).</font></div><div dir=3D"auto"><font face=3D"sans-serif"><br></font></di=
v><div dir=3D"auto"><font face=3D"sans-serif">Well, I installed a couple of=
=C2=A0 different new electric=C2=A0 pumps=C2=A0 adjacent to the mechanical =
pump.</font></div><div dir=3D"auto"><font face=3D"sans-serif"><br></font></=
div><div dir=3D"auto"><font face=3D"sans-serif">They would never 'self =
prime'.=C2=A0</font></div><div dir=3D"auto"><font face=3D"sans-serif"><=
br></font></div><div dir=3D"auto"><font face=3D"sans-serif">Now, returning =
to the project. I removed the mechanical pump, & DRAINED the tank of th=
e old fuel. It seems that the gravity feed when the tank is less than 1/2 f=
ull requires the elec pump to be very low ( like the original input height =
of the original pump, to receive fuel.=C2=A0</font></div><div dir=3D"auto">=
<font face=3D"sans-serif"><br></font></div><div dir=3D"auto"><font face=3D"=
sans-serif">So I am redetailing the frame (cleaning & new paint) and se=
curing the new fuel line, inline glass Filter & elec pump=C2=A0 right o=
n the frame. This allows the steel feed line from the tank ( after Dremel T=
ool cutting) to match the new location of the electric pump.</font></div><d=
iv dir=3D"auto"><font face=3D"sans-serif"><br></font></div><div dir=3D"auto=
"><font face=3D"sans-serif">Next will be modifying a new copper fuel line (=
semblance of originality) to meet the elec pump feed right behind & ad=
jacent to the Water pump. The original copper pipe mated to the back of the=
mechanical pump , ran up and forward along the engine at the cylinder head=
level to the front of the engine & then across to the carburetor feeds=
.</font></div><div dir=3D"auto"><font face=3D"sans-serif"><br></font></div>=
<div dir=3D"auto"><font face=3D"sans-serif">Finally hope this resolves the =
fuel delivery issue.</font></div><div dir=3D"auto"><font face=3D"sans-serif=
"><br></font></div><div dir=3D"auto"><font face=3D"sans-serif">I=C2=A0 want=
ed to share a warning about the TRF pump supplier manufacturing glitch. So =
others can not waste years getting their TRs back to Roadworthy status.</fo=
nt></div><div dir=3D"auto"><font face=3D"sans-serif"><br></font></div><div =
dir=3D"auto"><font face=3D"sans-serif">Obviously not going to drive a car w=
ith weeping fuel near a hot engine. At least on the TR4 & 6s, ( unlike =
Jaguar 6s ( have 2) or V12s ( have 3), Jensen GTs ( have 3) ; the exhaust M=
anifolds are on the opposite side of the engine.=C2=A0</font></div><div dir=
=3D"auto"><font face=3D"sans-serif"><br></font></div><div dir=3D"auto">Sher=
man D Taffel=C2=A0</div><div dir=3D"auto">Columbia MD and Goldvein VA=C2=A0=
</div><div dir=3D"auto">65 TR4 CT 50054L</div><div dir=3D"auto">( per VTR t=
he last known TR4 produced & shipped to USA)</div><div dir=3D"auto"><br=
></div><div dir=3D"auto"><br></div><div id=3D"m_-6070975799002559859compose=
r_signature" dir=3D"auto"><div style=3D"font-size:85%;color:#575757" dir=3D=
"auto">Sent via the Samsung Galaxy S10, an AT&T 5G Evolution capable sm=
artphone</div></div><div dir=3D"auto"></div></div><div dir=3D"auto"><br></d=
iv><div dir=3D"auto"><br></div><div id=3D"m_-6070975799002559859composer_si=
gnature" dir=3D"auto"><div style=3D"font-size:85%;color:#575757" dir=3D"aut=
o">Sent via the Samsung Galaxy S10, an AT&T 5G Evolution capable smartp=
hone</div></div><div dir=3D"auto"><br></div></div>** <a href=3D"mailto:triu=
mphs@autox.team.net" target=3D"_blank" rel=3D"noreferrer">triumphs@autox.te=
am.net</a> **<br>
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errer" target=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; rel=3D"noreferr=
er noreferrer" target=3D"_blank">http://www.team.net/pipermail/triumphs</a>=
=C2=A0 <a href=3D"http://www.team.net/archive"; rel=3D"noreferrer noreferrer=
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</blockquote></div>
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