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Re: [Fot] TR4 spitting thru Webers - haaaalp!

To: "J.C. Hassall" <jhassall@gmail.com>
Subject: Re: [Fot] TR4 spitting thru Webers - haaaalp!
From: Chuck Gee <chasgee22@gmail.com>
Date: Sun, 23 Aug 2015 18:09:09 -0700
Cc: 'Friends of Triumph' Triumph <fot@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <CAO=iLWaF5+t_LZ9otc_t2avaMoU3gzU04vobjvfx9PqKKfFWZg@mail.gmail.com> <20150824004125.2539315EFF8B@barracuda.supercp.com> <0CAF9E0A-C171-4319-B02D-783E84B33AE3@gmail.com>
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Plugs too hot?
On Aug 23, 2015 6:01 PM, "J.C. Hassall" <jhassall@gmail.com> wrote:

> Tnx Tony.  I neglected to say that the Isky 777 was degrees bang-on.  My
> first thought was the cam but am sure it's ok.
>
> It's only had the Webers and I don't have SUs to try.  I am running short=
y
> air horns (to fit inside the filters).
>
> Valves are set right and no manifold leak detected by spraying carb
> cleaner around the manifold.
>
> jim
>
> Fat-thumbed from my iPhone
>
> > On Aug 23, 2015, at 8:41 PM, Tony Drews <tony@tonydrews.com> wrote:
> >
> > I run slightly larger mains and smaller air correction - 36 chokes.  I
> think you're in the range on mains.
> >
> > New engine?  Run OK with other carbs but not with the Webers?  Are you
> sure your cam is timed right (that's the first thing that came to mind -
> mis-timed cam)?  Intake manifold properly seated?  Valve adjustment OK?
> >
> > There will be a certain amount of "standoff" where there's an atomized
> fuel cloud at the entrance to the carb and that's not abnormal.
> >
> > I run air horns to manage the air flow and try to keep that cloud of ga=
s
> in the carb.
> >
> > Cheers, Tony Drews
> >
> > At 07:14 PM 8/23/2015, J.C. Hassall wrote:
> >> My TR4 spits thru the 40DCOEs at idle and speed.=C3=82  Timing is set =
to 32
> degrees at 3K RPM, so idle is about 12 degrees.=C3=82  I thought that spi=
tting
> thru the carbs meant too much advance, but I believe timing is ok.
> >>
> >> The AFR (sensor is in the 4-1 collector - bad idea) at idle jumps
> between 13.8 and 15.3 (seems like an enormous swing!).=C3=82  Spitting do=
esn't
> seem to coincide with any specific AFR.=C3=82  The carbs have been synche=
d, etc.
> =C3=82 34 chokes, 50F9 idle jets, mains are 120 with 200 air correctors.=
=C3=82  The
> mains seem awfully small.=C3=82  Even so, the AFR at speed is 12.8-13.5.=
=C3=82  Plugs
> are NGK BP6HS, which are sooty; the ground lug burns clean about half way=
.
> >>
> >> What am I doing wrong???=C3=82  I'm at the end of my wit (you're right
> Craig, it's a very short walk)
> >>
> >> tnx
> >>
> >> jim
> >>
> >> 63 TR4 in autox prep, 99.5% finished, 90% to go
> >> _______________________________________________
> >> fot@autox.team.net
> >>
> >> http://www.fot-racing.com
> >>
> >> Donate: http://www.team.net/donate.html
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> >
> >
> _______________________________________________
> fot@autox.team.net
>
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>
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>

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<p dir=3D"ltr">Plugs too hot?</p>
<div class=3D"gmail_quote">On Aug 23, 2015 6:01 PM, &quot;J.C. Hassall&quot=
; &lt;<a href=3D"mailto:jhassall@gmail.com";>jhassall@gmail.com</a>&gt; wrot=
e:<br type=3D"attribution"><blockquote class=3D"gmail_quote" style=3D"margi=
n:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Tnx Tony.=C2=A0 I=
 neglected to say that the Isky 777 was degrees bang-on.=C2=A0 My first tho=
ught was the cam but am sure it&#39;s ok.<br>
<br>
It&#39;s only had the Webers and I don&#39;t have SUs to try.=C2=A0 I am ru=
nning shorty air horns (to fit inside the filters).<br>
<br>
Valves are set right and no manifold leak detected by spraying carb cleaner=
 around the manifold.<br>
<br>
jim<br>
<br>
Fat-thumbed from my iPhone<br>
<br>
&gt; On Aug 23, 2015, at 8:41 PM, Tony Drews &lt;<a href=3D"mailto:tony@ton=
ydrews.com">tony@tonydrews.com</a>&gt; wrote:<br>
&gt;<br>
&gt; I run slightly larger mains and smaller air correction - 36 chokes.=C2=
=A0 I think you&#39;re in the range on mains.<br>
&gt;<br>
&gt; New engine?=C2=A0 Run OK with other carbs but not with the Webers?=C2=
=A0 Are you sure your cam is timed right (that&#39;s the first thing that c=
ame to mind - mis-timed cam)?=C2=A0 Intake manifold properly seated?=C2=A0 =
Valve adjustment OK?<br>
&gt;<br>
&gt; There will be a certain amount of &quot;standoff&quot; where there&#39=
;s an atomized fuel cloud at the entrance to the carb and that&#39;s not ab=
normal.<br>
&gt;<br>
&gt; I run air horns to manage the air flow and try to keep that cloud of g=
as in the carb.<br>
&gt;<br>
&gt; Cheers, Tony Drews<br>
&gt;<br>
&gt; At 07:14 PM 8/23/2015, J.C. Hassall wrote:<br>
&gt;&gt; My TR4 spits thru the 40DCOEs at idle and speed.=C3=82=C2=A0 Timin=
g is set to 32 degrees at 3K RPM, so idle is about 12 degrees.=C3=82=C2=A0 =
I thought that spitting thru the carbs meant too much advance, but I believ=
e timing is ok.<br>
&gt;&gt;<br>
&gt;&gt; The AFR (sensor is in the 4-1 collector - bad idea) at idle jumps =
between 13.8 and 15.3 (seems like an enormous swing!).=C3=82=C2=A0 Spitting=
 doesn&#39;t seem to coincide with any specific AFR.=C3=82=C2=A0 The carbs =
have been synched, etc. =C3=82 34 chokes, 50F9 idle jets, mains are 120 wit=
h 200 air correctors.=C3=82=C2=A0 The mains seem awfully small.=C3=82=C2=A0=
 Even so, the AFR at speed is 12.8-13.5.=C3=82=C2=A0 Plugs are NGK BP6HS, w=
hich are sooty; the ground lug burns clean about half way.<br>
&gt;&gt;<br>
&gt;&gt; What am I doing wrong???=C3=82=C2=A0 I&#39;m at the end of my wit =
(you&#39;re right Craig, it&#39;s a very short walk)<br>
&gt;&gt;<br>
&gt;&gt; tnx<br>
&gt;&gt;<br>
&gt;&gt; jim<br>
&gt;&gt;<br>
&gt;&gt; 63 TR4 in autox prep, 99.5% finished, 90% to go<br>
&gt;&gt; _______________________________________________<br>
&gt;&gt; <a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a><br>
&gt;&gt;<br>
&gt;&gt; <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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&gt;<br>
&gt;<br>
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</blockquote></div>

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