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Good for you tuning the carbs at 93 degrees!
I can=E2=80=99t face getting into my Healey today=E2=80=A6maybe in the =
evening!
Stephen, BJ8
> On Jul 7, 2020, at 4:52 PM, warthodson--- via Healeys =
<healeys@autox.team.net> wrote:
>=20
> I just performed the piston lift pin test on my tri-carbs. FYI, I have =
3 SU HS6 carbs & an mid-aggressive cam. I cannot recall the specs. About =
a 9.5:1 compression & run premium pump gas. To keep my engine running =
(idling) at stop lights I need to set the idle at 1000rpm. It will drop =
to 600-800rpm when I depress the clutch.
> It is 93degrees here today when I performed the lift test. All three =
carbs performed similarly. With the piston lifted the rpm dropped & the =
engine ran rougher but did not die. But each time it was on the verge of =
dying. After releasing the lift pin the rpm did not return to 1000, =
until I cleared the carbs by revving the engine. My carbs have a stock =
balance pipe. I understand that there were 2 different original balance =
pipes. I believe mine is the later style.
> I hope this is some help.
> Gary
>=20
>=20
> -----Original Message-----
> From: John Spaur <jmsdarch@sbcglobal.net =
> Sent: Tue, Jul 7, 2020 11:51 am
> Subject: RE: [Healeys] HS4 Tri-carb tuning
>=20
> Gary,
> =20
> You understand my question! J Yes, disconnected the linkages and tuned =
them by the book. They are working great although I have not taken the =
car on a long drive or connected the choke cables yet. With the tuning =
kit I can easily see that the pistons rise equally at different throttle =
settings. Incidentally, the jet nut settings on each carb are almost =
identical to what the old ones were.
> =20
> Let me know what you find out when you test the pins on your carb. It =
would be very helpful.
> =20
> TIA,
> John Spaur
> =20
> From: Healeys [mailto:healeys-bounces@autox.team.net =
Healeys
> Sent: Tuesday, July 7, 2020 7:27 AM
> Subject: Re: [Healeys] HS4 Tri-carb tuning
> =20
> John,=20
> Are all 3 carb interconnecting throttle linkages disconnected during =
all the tuning steps?=20
> I have never seen this test before in any literature, so I have never =
tried the test on my tri-carb setup. I will give it a try later today & =
let you know what I find.
> If your 3 carbs all perform the same on all the other tests, I think =
they will perform correctly together. I am assuming you have confirmed =
that all 3 carbs have the same needle. Also, when you say the "piston is =
lifted all the way up" you are referring to lifting the piston by the =
pin, (approximately 1/2" pin travel), not by literally lifting the =
piston all the way up.
> Gary Hodson
>=20
>=20
> _______________________________________________
> Support Team.Net <http://team.net/> http://www.team.net/donate.html =
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> Suggested annual donation $12.75
>=20
> Archive: http://www.team.net/pipermail/healeys =
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>=20
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>=20
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">Good =
for you tuning the carbs at 93 degrees!<div class=3D"">I can=E2=80=99t =
face getting into my Healey today=E2=80=A6maybe in the =
evening!</div><div class=3D""><br class=3D""></div><div =
class=3D"">Stephen, BJ8<br class=3D""><div><br class=3D""><blockquote =
type=3D"cite" class=3D""><div class=3D"">On Jul 7, 2020, at 4:52 PM, =
warthodson--- via Healeys <<a href=3D"mailto:healeys@autox.team.net"; =
class=3D"">healeys@autox.team.net</a>> wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
style=3D"font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; font-stretch: =
normal; font-size: 12pt; line-height: normal; font-family: "Comic =
Sans MS", sans-serif;" class=3D"">I just performed the piston lift =
pin test on my tri-carbs. FYI, I have 3 SU HS6 carbs & an =
mid-aggressive cam. I cannot recall the specs. About a 9.5:1 compression =
& run premium pump gas. To keep my engine running (idling) at stop =
lights I need to set the idle at 1000rpm. It will drop to 600-800rpm =
when I depress the clutch.<div class=3D"">It is 93degrees here today =
when I performed the lift test. All three carbs performed similarly. =
With the piston lifted the rpm dropped & the engine ran rougher but =
did not die. But each time it was on the verge of dying. After releasing =
the lift pin the rpm did not return to 1000, until I cleared the carbs =
by revving the engine. My carbs have a stock balance pipe. I understand =
that there were 2 different original balance pipes. I believe mine is =
the later style.</div><div class=3D"">I hope this is some =
help.</div><div class=3D"">Gary<br class=3D""><br class=3D""><br =
class=3D""><div style=3D"font-family: arial, helvetica; font-size: =
10pt;" class=3D"">-----Original Message-----<br class=3D"">From: John =
Spaur <<a href=3D"mailto:jmsdarch@sbcglobal.net"; =
class=3D"">jmsdarch@sbcglobal.net</a>><br class=3D"">To:<span =
class=3D"Apple-converted-space"> </span><a =
href=3D"mailto:warthodson@aol.com"; class=3D"">warthodson@aol.com</a><br =
class=3D"">Sent: Tue, Jul 7, 2020 11:51 am<br class=3D"">Subject: RE: =
[Healeys] HS4 Tri-carb tuning<br class=3D""><br class=3D""><div =
id=3D"yiv5757757009" class=3D""><div class=3D""><div =
class=3D"yiv5757757009WordSection1"><div class=3D"yiv5757757009MsoNormal" =
style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: =
"New serif";"><span style=3D"font-size: 11pt; font-family: =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Gary,</span></div><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: "New serif";"><span =
style=3D"font-size: 11pt; font-family: sans-serif; color: rgb(31, 73, =
125);" class=3D""> </span></div><div class=3D"yiv5757757009MsoNormal"=
style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: =
"New serif";"><span style=3D"font-size: 11pt; font-family: =
sans-serif; color: rgb(31, 73, 125);" class=3D"">You understand my =
question!<span class=3D"Apple-converted-space"> </span></span><span =
style=3D"font-size: 11pt; font-family: Wingdings; color: rgb(31, 73, =
125);" class=3D"">J</span><span style=3D"font-size: 11pt; font-family: =
sans-serif; color: rgb(31, 73, 125);" class=3D""><span =
class=3D"Apple-converted-space"> </span>Yes, disconnected the =
linkages and tuned them by the book. They are working great although I =
have not taken the car on a long drive or connected the choke cables =
yet. With the tuning kit I can easily see that the pistons rise equally =
at different throttle settings. Incidentally, the jet nut settings on =
each carb are almost identical to what the old ones =
were.</span></div><div class=3D"yiv5757757009MsoNormal" style=3D"margin: =
0in 0in 0.0001pt; font-size: 12pt; font-family: "New =
serif";"><span style=3D"font-size: 11pt; font-family: sans-serif; =
color: rgb(31, 73, 125);" class=3D""> </span></div><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: "New serif";"><span =
style=3D"font-size: 11pt; font-family: sans-serif; color: rgb(31, 73, =
125);" class=3D"">Let me know what you find out when you test the pins =
on your carb. It would be very helpful.</span></div><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: "New serif";"><span =
style=3D"font-size: 11pt; font-family: sans-serif; color: rgb(31, 73, =
125);" class=3D""> </span></div><div class=3D"yiv5757757009MsoNormal"=
style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: =
"New serif";"><span style=3D"font-size: 11pt; font-family: =
sans-serif; color: rgb(31, 73, 125);" class=3D"">TIA,</span></div><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: "New serif";"><span =
style=3D"font-size: 11pt; font-family: sans-serif; color: rgb(31, 73, =
125);" class=3D"">John Spaur</span></div><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: "New serif";"><span =
style=3D"font-size: 11pt; font-family: sans-serif; color: rgb(31, 73, =
125);" class=3D""> </span></div><div =
class=3D"yiv5757757009yqt3141372578" id=3D"yiv5757757009yqt64379"><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: "New serif";"><b class=3D""><span =
style=3D"font-size: 11pt; font-family: sans-serif;" =
class=3D"">From:</span></b><span style=3D"font-size: 11pt; font-family: =
sans-serif;" class=3D""><span =
class=3D"Apple-converted-space"> </span>Healeys [<a =
href=3D"mailto:healeys-bounces@autox.team.net"; style=3D"color: purple; =
text-decoration: underline;" =
class=3D"">mailto:healeys-bounces@autox.team.net</a>]<span =
class=3D"Apple-converted-space"> </span><b class=3D"">On Behalf =
Of<span class=3D"Apple-converted-space"> </span></b>warthodson--- =
via Healeys<br clear=3D"none" class=3D""><b class=3D"">Sent:</b><span =
class=3D"Apple-converted-space"> </span>Tuesday, July 7, 2020 7:27 =
AM<br clear=3D"none" class=3D""><b class=3D"">To:</b><span =
class=3D"Apple-converted-space"> </span><a =
href=3D"mailto:healeys@autox.team.net"; style=3D"color: purple; =
text-decoration: underline;" class=3D"">healeys@autox.team.net</a><br =
clear=3D"none" class=3D""><b class=3D"">Subject:</b><span =
class=3D"Apple-converted-space"> </span>Re: [Healeys] HS4 Tri-carb =
tuning</span></div><div class=3D"yiv5757757009MsoNormal" style=3D"margin: =
0in 0in 0.0001pt; font-size: 12pt; font-family: "New =
serif";"> </div><div class=3D""><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: "New serif";"><span =
style=3D"font-family: Sans;" class=3D"">John,<span =
class=3D"Apple-converted-space"> </span></span></div><div =
class=3D""><div class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in =
0in 0.0001pt; font-size: 12pt; font-family: "New =
serif";"><span style=3D"font-family: Sans;" class=3D"">Are all 3 =
carb interconnecting throttle linkages disconnected during all the =
tuning steps? </span></div></div><div class=3D""><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: "New serif";"><span =
style=3D"font-family: Sans;" class=3D"">I have never seen this test =
before in any literature, so I have never tried the test on my tri-carb =
setup. I will give it a try later today & let you know what I =
find.</span></div></div><div class=3D""><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: "New serif";"><span =
style=3D"font-family: Sans;" class=3D"">If your 3 carbs all perform the =
same on all the other tests, I think they will perform correctly =
together. I am assuming you have confirmed that all 3 carbs have the =
same needle. Also, when you say the "piston is lifted all the way up" =
you are referring to lifting the piston by the pin, (approximately 1/2" =
pin travel), not by literally lifting the piston all the way =
up.</span></div></div><div class=3D""><div =
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 12pt; =
font-size: 12pt; font-family: "New serif";"><span =
style=3D"font-family: Sans;" class=3D"">Gary Hodson<br clear=3D"none" =
class=3D""><br clear=3D"none" class=3D""></span></div><div class=3D""><div=
class=3D"yiv5757757009MsoNormal" style=3D"margin: 0in 0in 12pt; =
font-size: 12pt; font-family: "New serif";"><br =
class=3D""></div></div></div></div></div></div></div></div></div></div></d=
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