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Thanks Kas,
The idea of starting high and backing off the timing until no detonation =
just didn=92t seem like a good idea to me at all. Why do that to an =
engine? Thanks for affirming that is a bad idea.
I=92m running 110 Sunoco, no domed pistons, and about 11.57 CR. I=92ve =
got a dyno test setup so that will get it where the car runs best.
Thanks
Bud
Extreme Parts Racing (more than just a haircut)
71TR6 CC57365 (Good 6)
71 Spitfire MK IV Race Car #3
69 Spitfire MK III (back up FE engine/dinghy car)
93 Minnie Winnie Race Support Vehicle=20
77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)
On Jun 2, 2015, at 5:13 PM, Kas Kastner <kaskastner@gmail.com> wrote:
> Ignition timing is decided by the quality of the gasoline provided to =
the engine and the elimination of detonation. With 100 octane you would =
not dare use more than 30 degrees with a TR-3,4 full race engine, but =
with 110-113 generally provided by the race management for sale (be sure =
to ask) then another couple degrees is certainly reasonable and there =
will be a power improvement. Maybe even a little more timing than that =
if you have not yet optimized your compression ratio. If you wait to =
hear detonation, chances are you will be to late to save the engine from =
some damage.
>=20
> Detonation occurrence is the determination of how much ignition =
advance you can safely use regardless of the engine type, style or =
manufacture. CLEAN spark plugs and a high rev shut off will tell you =
about all that.
>=20
> Oh yeah, here is old Kas again ranting on about checking the spark =
plugs.
>=20
> Never be beaten by equipment.
>=20
>=20
> On Tue, Jun 2, 2015 at 3:53 PM, Duncan Charlton =
<duncan.charlton54@gmail.com> wrote:
> I assume that includes vacuum advance, which many racers would not =
use. I have always assumed that the vacuum advance is really a fuel =
economy improvement device and that it would not ever come into play at =
full throttle.
>=20
> Duncan
> (Texas)
>=20
> > On Jun 2, 2015, at 5:01 PM, Greg And Alison Blake =
<ablake2@austin.rr.com> wrote:
> >
> > Not a spitfire guy but 48???? WOW that seems really high.
> >
> > My TR3 race motor likes 30. It's never been on a Dyno so I am sure I =
am leaving some power unused, but I don't melt Pistons or hammer =
bearings either.
> >
> >
> >> On Jun 2, 2015, at 12:57 PM, Bud Rolofson <levilevi@comcast.net> =
wrote:
> >>
> >> Amici,
> >>
> >> What timing setting are you Spitfire racers using? I've seen =
suggestions from 32 degrees total advance to 48.
> >> Thanks
> >> Bud
> >>
> >> Sent from Vail pass 10881 ft elevation. Will be back home in a =
couple hours from our Utah National Park tour in the RV.
> >>
> >>
> >> Sent from my Commodore 64
> >> _______________________________________________
> >> fot@autox.team.net
> >>
> >> http://www.fot-racing.com
> >>
> >> Donate: http://www.team.net/donate.html
> >> Archive: http://www.team.net/archive
> >> Forums: http://www.team.net/forums
> >> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/ablake2@austin.rr.com
> >>
> >>
> > _______________________________________________
> > fot@autox.team.net
> >
> > http://www.fot-racing.com
> >
> > Donate: http://www.team.net/donate.html
> > Archive: http://www.team.net/archive
> > Forums: http://www.team.net/forums
> > Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/duncan.charlton54@gmail.com
> >
> >
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/kaskastner@gmail.com
>=20
>=20
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/levilevi@comcast.net
>=20
>=20
--Apple-Mail=_6F9ED575-BFD6-4C92-ACE1-841D27FE1F7D
Content-Transfer-Encoding: quoted-printable
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dwindows-1252"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Thanks =
Kas,<div><br></div><div>The idea of starting high and backing off the =
timing until no detonation just didn=92t seem like a good idea to me at =
all. Why do that to an engine? Thanks for affirming that is a bad =
idea.</div><div>I=92m running 110 Sunoco, no domed pistons, and about =
11.57 CR. I=92ve got a dyno test setup so that will get it where the car =
runs best.</div><div><br></div><div>Thanks</div><div>Bud<br><div =
apple-content-edited=3D"true">
<span class=3D"Apple-style-span" style=3D"color: rgb(0, 0, 0); =
font-family: Helvetica; font-size: 18px; font-style: normal; =
font-variant: normal; font-weight: normal; letter-spacing: normal; =
line-height: normal; text-align: -webkit-auto; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; border-collapse: separate; orphans: 2; =
widows: 2; border-spacing: 0px; -webkit-text-decorations-in-effect: =
none;"><div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space;"><span class=3D"Apple-style-span" =
style=3D"orphans: 2; text-align: -webkit-auto; text-indent: 0px; widows: =
2; -webkit-text-decorations-in-effect: none;"><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;"><span class=3D"Apple-style-span" style=3D"orphans: =
2; text-align: -webkit-auto; text-indent: 0px; widows: 2; =
-webkit-text-decorations-in-effect: none;"><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;"><span class=3D"Apple-style-span" style=3D"orphans: =
2; text-align: -webkit-auto; text-indent: 0px; widows: 2; =
-webkit-text-decorations-in-effect: none;"><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;"><span class=3D"Apple-style-span" style=3D"orphans: =
2; text-align: -webkit-auto; text-indent: 0px; widows: 2; =
-webkit-text-decorations-in-effect: none;"><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;"><span class=3D"Apple-style-span" style=3D"orphans: =
2; text-align: -webkit-auto; text-indent: 0px; widows: 2; =
-webkit-text-decorations-in-effect: none;"><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;"><span class=3D"Apple-style-span" style=3D"orphans: =
2; text-indent: 0px; widows: 2; -webkit-text-decorations-in-effect: =
none;"><div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space;"><span class=3D"Apple-style-span" =
style=3D"orphans: 2; text-indent: 0px; widows: 2; =
-webkit-text-decorations-in-effect: none;"><div><div =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-transform: =
none; white-space: normal; word-spacing: 0px; border-spacing: 0px; =
-webkit-text-stroke-width: 0px;"><br></div><div style=3D"border-collapse: =
separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: =
normal; font-variant: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; text-transform: none; white-space: normal; =
word-spacing: 0px; border-spacing: 0px; -webkit-text-stroke-width: =
0px;">Extreme Parts Racing (more than just a haircut)</div><div =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-transform: =
none; white-space: normal; word-spacing: 0px; border-spacing: 0px; =
-webkit-text-stroke-width: 0px;"><br></div><div>71TR6 CC57365 (Good =
6)</div><div style=3D"border-collapse: separate; color: rgb(0, 0, 0); =
font-family: Helvetica; font-style: normal; font-variant: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
text-transform: none; white-space: normal; word-spacing: 0px; =
border-spacing: 0px; -webkit-text-stroke-width: 0px;">71 Spitfire MK IV =
Race Car #3</div><div style=3D"border-collapse: separate; color: rgb(0, =
0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
text-transform: none; white-space: normal; word-spacing: 0px; =
border-spacing: 0px; -webkit-text-stroke-width: 0px;">69 Spitfire MK III =
(back up FE engine/dinghy car)</div><div style=3D"border-collapse: =
separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: =
normal; font-variant: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; text-transform: none; white-space: normal; =
word-spacing: 0px; border-spacing: 0px; -webkit-text-stroke-width: =
0px;">93 Minnie Winnie Race Support Vehicle </div><div =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-transform: =
none; white-space: normal; word-spacing: 0px; border-spacing: 0px; =
-webkit-text-stroke-width: 0px;">77 Z-50A Hardly Davidson Honda =
Mini-Trail Bike (Triumph Pit Bike)</div></div><div =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
text-transform: none; white-space: normal; word-spacing: 0px; =
border-spacing: 0px; -webkit-text-stroke-width: 0px;"><br></div><div =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
text-transform: none; white-space: normal; word-spacing: 0px; =
border-spacing: 0px; -webkit-text-stroke-width: =
0px;"><br></div></span></div></span></div></span></div></span></div></span=
></div></span></div></span></div></span></div><div><div>On Jun 2, 2015, =
at 5:13 PM, Kas Kastner <<a =
href=3D"mailto:kaskastner@gmail.com";>kaskastner@gmail.com</a>> =
wrote:</div><br class=3D"Apple-interchange-newline"><blockquote =
type=3D"cite"><div dir=3D"ltr"><div>Ignition timing is decided by the =
quality of the gasoline provided to the engine and the elimination of =
detonation. With 100 octane you would not dare use more than 30 degrees =
with a TR-3,4 full race engine, but with 110-113 generally =
provided by the race management for sale (be sure to ask) then another =
couple degrees is certainly reasonable and there will be a power =
improvement. Maybe even a little more timing than that if you have =
not yet optimized your compression ratio. If you wait to<strong> =
<em>hear</em> </strong>detonation, chances are you will be to late to =
save the engine from some damage.</div><div><br></div><div>Detonation =
occurrence is the determination of how much ignition advance you =
can safely use regardless of the engine type, style or manufacture. =
CLEAN spark plugs and a high rev shut off will tell you about all =
that.</div><div><br></div><div>Oh yeah, here is old Kas again ranting on =
about checking the spark plugs.</div></div><div class=3D"gmail_extra"><br =
clear=3D"all"><div><div class=3D"gmail_signature"><p><strong><font =
color=3D"#000099">Never be beaten by =
equipment.</font></strong></p></div></div>
<br><div class=3D"gmail_quote">On Tue, Jun 2, 2015 at 3:53 PM, Duncan =
Charlton <span dir=3D"ltr"><<a =
href=3D"mailto:duncan.charlton54@gmail.com"; =
target=3D"_blank">duncan.charlton54@gmail.com</a>></span> =
wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 =
.8ex;border-left:1px #ccc solid;padding-left:1ex">I assume that includes =
vacuum advance, which many racers would not use. I have always =
assumed that the vacuum advance is really a fuel economy improvement =
device and that it would not ever come into play at full throttle.<br>
<br>
Duncan<br>
(Texas)<br>
<br>
> On Jun 2, 2015, at 5:01 PM, Greg And Alison Blake <<a =
href=3D"mailto:ablake2@austin.rr.com";>ablake2@austin.rr.com</a>> =
wrote:<br>
><br>
> Not a spitfire guy but 48???? WOW that seems really high.<br>
><br>
> My TR3 race motor likes 30. It's never been on a Dyno so I am sure =
I am leaving some power unused, but I don't melt Pistons or hammer =
bearings either.<br>
><br>
><br>
>> On Jun 2, 2015, at 12:57 PM, Bud Rolofson <<a =
href=3D"mailto:levilevi@comcast.net";>levilevi@comcast.net</a>> =
wrote:<br>
>><br>
>> Amici,<br>
>><br>
>> What timing setting are you Spitfire racers using? I've seen =
suggestions from 32 degrees total advance to 48.<br>
>> Thanks<br>
>> Bud<br>
>><br>
>> Sent from Vail pass 10881 ft elevation. Will be back home in a =
couple hours from our Utah National Park tour in the RV.<br>
>><br>
>><br>
>> Sent from my Commodore 64<br>
>> _______________________________________________<br>
>> <a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a><br>
>><br>
>> <a href=3D"http://www.fot-racing.com/"; =
target=3D"_blank">http://www.fot-racing.com</a><br>
>><br>
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.rr.com</a><br>
>><br>
>><br>
> _______________________________________________<br>
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n54@gmail.com</a><br>
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<br>
<br>
</blockquote></div><br></div>
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