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The Advance curve is all done at about 3000 rpm. 30 degrees total advance is=
about right. Will depend on your particular engine, but might be best to ba=
ck off 2-4 degrees.
Sent from my iPhone
> On Mar 19, 2021, at 6:41 PM, Greg Hilyer via Fot <fot@autox.team.net> wrot=
e:
>=20
> =EF=BB=BF
> Hey Tim,
> Happy belated 3/17!
> There=E2=80=99s a guy named Kas (can=E2=80=99t remember the last name) tha=
t did some dyno tuning awhile back - he even wrote a book or two about it=F0=
=9F=A4=AA.
> But in all seriousness, I=E2=80=99ve done mine by the (Comp Prep Manual) b=
ook. Base and total is easy but it takes a bunch of fiddling to get the =E2=80=
=9CKas curve=E2=80=9D. Has worked great but I=E2=80=99ll admit that I=E2=80=99=
ve never gone beyond that.
> Greg =E2=80=9CLunker=E2=80=9D Hilyer=20
> Albuquerque NM
>=20
>> On Mar 19, 2021, at 4:27 PM, timmmurphh--- via Fot <fot@autox.team.net> w=
rote:
>>=20
>> What advance curve are folks using in their race engines? I have 87mm pis=
tons, a Kastner G3 cam and about a 12:1 compression ratio. I am using about 1=
9 degrees advance at idle (no centrifugal advance) and 30 degrees advance at=
3000 RPM. I don=E2=80=99t know what I have at higher RPM=E2=80=99s because=
I never looked. I=E2=80=99m currently doing an engine rebuild so I will hav=
e to look what I=E2=80=99ve got at the higher RPM=E2=80=99s when I get the e=
ngine running. I=E2=80=99m curious as to what others are using and if anyone=
has done any testing on a dyno with different advance curves.
>> =20
>> Thanks in advance for your input.
>> =20
>> Tim Murphy
>> #317 BRG TR4
>> _______________________________________________
>> fot@autox.team.net
>>=20
>> http://www.fot-racing.com
>>=20
>> Donate: http://www.team.net/donate.html
>> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/lunkercars@=
yahoo.com
>>=20
>>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/vfracing@aol=
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>=20
>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">The Advance curve is all done at about 3000=
rpm. 30 degrees total advance is about right. Will depend on your particula=
r engine, but might be best to back off 2-4 degrees.<div><br><br><div dir=3D=
"ltr">Sent from my iPhone</div><div dir=3D"ltr"><br><blockquote type=3D"cite=
">On Mar 19, 2021, at 6:41 PM, Greg Hilyer via Fot <fot@autox.team.net>=
; wrote:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr=
">=EF=BB=BF<meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"><div dir=3D"ltr"></div><div dir=3D"ltr">Hey Tim,</div><div dir=3D"ltr=
">Happy belated 3/17!</div><div dir=3D"ltr">There=E2=80=99s a guy named Kas (=
can=E2=80=99t remember the last name) that did some dyno tuning awhile back -=
he even wrote a book or two about it=F0=9F=A4=AA.</div><div dir=3D"ltr">But=
in all seriousness, I=E2=80=99ve done mine by the (Comp Prep Manual) book. B=
ase and total is easy but it takes a bunch of fiddling to get the =E2=80=9CK=
as curve=E2=80=9D. Has worked great but I=E2=80=99ll admit that I=E2=80=99ve=
never gone beyond that.</div><div dir=3D"ltr">Greg =E2=80=9CLunker=E2=80=9D=
Hilyer </div><div dir=3D"ltr">Albuquerque NM</div><div dir=3D"ltr"><br=
>On Mar 19, 2021, at 4:27 PM, timmmurphh--- via Fot <<a href=3D"mailto:fo=
t@autox.team.net">fot@autox.team.net</a>> wrote:<br><br></div><blockquote=
type=3D"cite"><div dir=3D"ltr"><meta http-equiv=3D"Content-Type" content=3D=
"text/html; charset=3Dus-ascii"><meta name=3D"Generator" content=3D"Microsof=
t Word 15 (filtered medium)"><style><!--
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<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--><div class=3D"WordSection1"><p class=3D"Ms=
oNormal">What advance curve are folks using in their race engines? I have 87=
mm pistons, a Kastner G3 cam and about a 12:1 compression ratio. I am using a=
bout 19 degrees advance at idle (no centrifugal advance) and 30 degrees adva=
nce at 3000 RPM. I don=E2=80=99t know what I have at higher RPM=E2=80=99=
s because I never looked. I=E2=80=99m currently doing an engine rebuild so I=
will have to look what I=E2=80=99ve got at the higher RPM=E2=80=99s when I g=
et the engine running. I=E2=80=99m curious as to what others are using and i=
f anyone has done any testing on a dyno with different advance curves.<o:p><=
/o:p></p><p class=3D"MsoNormal"><o:p> </o:p></p><p class=3D"MsoNormal">=
Thanks in advance for your input.<o:p></o:p></p><p class=3D"MsoNormal"><o:p>=
</o:p></p><p class=3D"MsoNormal">Tim Murphy<o:p></o:p></p><p class=3D"=
MsoNormal">#317 BRG TR4<o:p></o:p></p></div></div></blockquote><blockquote t=
ype=3D"cite"><div dir=3D"ltr"><span>________________________________________=
_______</span><br><span><a href=3D"mailto:fot@autox.team.net";>fot@autox.team=
.net</a></span><br><span></span><br><span><a href=3D"http://www.fot-racing.c=
om">http://www.fot-racing.com</a></span><br><span></span><br><span>Donate: <=
a href=3D"http://www.team.net/donate.html";>http://www.team.net/donate.html</=
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n></span><br><span></span><br></div></blockquote><span>_____________________=
__________________________</span><br><span>fot@autox.team.net</span><br><spa=
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n>Donate: http://www.team.net/donate.html</span><br><span>Archive: http://au=
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_______________________________________________
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http://www.fot-racing.com
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