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I found the opposite response with my CD175 Strombergs. If the piston
rises too quickly the venturi effect is reduced and adequate fuel is not
drawn through the jet causing a lean mixture. I use marvel mystery oil.
On Tue, Nov 24, 2020 at 3:19 AM Rocky Entriken via Fot <fot@autox.team.net>
wrote:
> Re Oil:
> I once did a race at Woody Creek Raceway, Aspen, CO (8000 feet) and could
> not get the car to rev over 5000 rpm. A friend diagnosed the problem ...
> got out his wire cutters and snipped the posts off the rods in the SU cap=
s.
> Never had a problem again!
>
> He about gave me a heart attack when he did it. Thing is, the purpose of
> the oil in the SUs is to retard the piston going up and down, mostly up. =
It
> was explained to me, you don=E2=80=99t WANT to retard the carb piston on =
a race
> engine. You hit the gas you want it WOT. RIGHT NOW! Street car, sure. Rac=
e
> car, no.
>
> But a tip: Clean the inside of the carb, piston & cylinder, regularly.
> Before each race. Brakleen. Fuel residue will gum it up if you don=E2=80=
=99t.
>
> --Rocky
>
> *From:* Henry Giffin via Fot
> *Sent:* Tuesday, November 24, 2020 12:58 AM
> *To:* fot@autox.team.net ; fot-bounces@autox.team.net
> *Subject:* [Fot] SU oil/refurbishing race suit?
>
>
> FOTs, I have two questions for the knowledgeable ones.
>
> Do you use light oil in your SUs on your racing engines? I have hear=
d
> both sides of this. I have not been using any oil, but have heard from
> friends I should be.
>
> A number of years ago when my son-in-law started racing we sent my
> old racing suit to someone to be refurbished. It came back in great
> condition. My current suit could use some work. We lost the name of the
> company who did the work. Can anyone recommend a source for refurbishing
> my suit?
>
> Thanks, Hank
>
>
>
> Hank Giffin
>
> 757-375-1491
>
>
>
> ------------------------------
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
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>
> http://www.fot-racing.com
>
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>
>
>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">I f=
ound the opposite response with my CD175 Strombergs.=C2=A0 If the piston ri=
ses too quickly the venturi effect is reduced and adequate fuel is not draw=
n through the jet causing a lean mixture.=C2=A0 I use marvel mystery oil.</=
div><div class=3D"gmail_default" style=3D"font-size:small"><br></div></div>=
<br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue=
, Nov 24, 2020 at 3:19 AM Rocky Entriken via Fot <<a href=3D"mailto:fot@=
autox.team.net">fot@autox.team.net</a>> wrote:<br></div><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid r=
gb(204,204,204);padding-left:1ex">
<div lang=3D"EN-US" style=3D"overflow-wrap: break-word;" dir=3D"ltr">
<div dir=3D"ltr">
<div style=3D"font-size:12pt;font-family:Calibri;color:rgb(0,0,0)">
<div>Re Oil:</div>
<div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline">I=20
once did a race at Woody Creek Raceway, Aspen, CO (8000 feet) and could not=
get=20
the car to rev over 5000 rpm. A friend diagnosed the problem ... got out hi=
s=20
wire cutters and snipped the posts off the rods in the SU caps. Never had a=
=20
problem again! </div></div>
<div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline">=C2=A0</d=
iv></div>
<div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline">He=20
about gave me a heart attack when he did it. Thing is, the purpose of the o=
il in=20
the SUs is to retard the piston going up and down, mostly up. It was explai=
ned=20
to me, you don=E2=80=99t WANT to retard the carb piston on a race engine. Y=
ou hit the=20
gas you want it WOT. RIGHT NOW! Street car, sure. Race car, no. </div></div=
>
<div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline">=C2=A0</d=
iv></div>
<div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline">But=20
a tip: Clean the inside of the carb, piston & cylinder, regularly. Befo=
re=20
each race. Brakleen. Fuel residue will gum it up if you don=E2=80=99t. </di=
v></div>
<div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline">=C2=A0</d=
iv></div>
<div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline">--Rocky</=
div></div>
<div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline">=C2=A0</d=
iv></div>
<div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline"></div>
<div style=3D"font:10pt tahoma">
<div style=3D"background:rgb(245,245,245)">
<div><b>From:</b> <a title=3D"fot@autox.team.net">Henry=20
Giffin via Fot</a> </div>
<div><b>Sent:</b> Tuesday, November 24, 2020 12:58 AM</div>
<div><b>To:</b> <a title=3D"fot@autox.team.net">fot@autox.team.net</a> ; <a=
title=3D"fot-bounces@autox.team.net">fot-bounces@autox.team.net</a> </div>
<div><b>Subject:</b> [Fot] SU oil/refurbishing race suit?</div></div></div>
<div>=C2=A0</div></div>
<div style=3D"font-size:small;text-decoration:none;font-family:Calibri;font=
-weight:normal;color:rgb(0,0,0);font-style:normal;display:inline">
<div class=3D"gmail-m_-3160393410014083921WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:14pt">FOTs, I have two ques=
tions for=20
the knowledgeable ones.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:14pt">=C2=A0=C2=A0=C2=A0 Do=
you use=20
light oil in your SUs on your racing engines?=C2=A0 I have heard both sides=
of=20
this.=C2=A0 I have not been using any oil, but have heard from friends I sh=
ould=20
be.=C2=A0 <u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:14pt">=C2=A0=C2=A0=C2=A0=C2=
=A0 A=20
number of years ago when my son-in-law started racing we sent my old racing=
suit=20
to someone to be refurbished.=C2=A0 It came back in great condition.=C2=A0 =
My=20
current suit could use some work.=C2=A0 We lost the name of the company who=
did=20
the work.=C2=A0 Can anyone recommend a source for refurbishing my=20
suit?<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:14pt">=C2=A0=C2=A0=C2=A0=C2=
=A0=20
Thanks, Hank<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:14pt"><u></u><u></u></span>=
=C2=A0</p>
<p class=3D"MsoNormal">Hank Giffin<u></u><u></u></p>
<p class=3D"MsoNormal">757-375-1491<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u><u></u>=C2=A0</p></div>
<p>
</p><hr>
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</blockquote></div>
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