Subject: [Fot] Tr6 Race CAr Cam

From: "Chuck Arnold and/or Kathleen Kelley" <[email-masked]>
Date: Mon, 11 Apr 2016 20:30:06 -0700

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Having now had several successful track outings, I have come to an
observation about my car's performance.  It is a petrol injected TR6.
Flowed head, Goodparts header, and cam whose maker I now cannot remember.
 320 degrees, .5 lift at valve, and pretty early and long symmetrical
input/exhaust valve timing. 104 degrees lobe separation.

Car reves past 7000 rpm easily in 4th [4:11 rear end].  The problem is
low/midrange torque..  I was slightly out dragged by good Spitfires coming
out of turn 10 onto the straight at Laguna.  By turn 1 I was faster than
them.  Power comes on too late and torque needs to improve at low end.
Looking for recommendations on a more appropriate duration and
input/exhaust open/close timing.

More importantly, I need a recommendation for cam vendor/recommended
grind.  Had a Kastner S9 in my last [now stolen] car -- but the gentleman
who did the grinding  has pasted on and Moon Eyes no longer does them.

I know I have not said enough about the current cam -- just I am away from
home and do not have the cam grind card with me.

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:georgia,=
serif;font-size:small">Having now had several successful track outings, I h=
ave come to an observation about my car&#39;s performance.=C2=A0 It is a pe=
trol injected TR6.=C2=A0 Flowed head, Goodparts header, and cam whose maker=
 I now cannot remember. =C2=A0320 degrees, .5 lift at valve, and pretty ear=
ly and long symmetrical input/exhaust valve timing. 104 degrees lobe separa=
tion.</div><div class=3D"gmail_default" style=3D"font-family:georgia,serif;=
font-size:small"><br></div><div class=3D"gmail_default" style=3D"font-famil=
y:georgia,serif;font-size:small">Car reves past 7000 rpm easily in 4th [4:1=
1 rear end].=C2=A0 The problem is low/midrange torque..=C2=A0 I was slightl=
y out dragged by good Spitfires coming out of turn 10 onto the straight at =
Laguna.=C2=A0 By turn 1 I was faster than them.=C2=A0 Power comes on too la=
te and torque needs to improve at low end.=C2=A0 Looking for recommendation=
s on a more appropriate duration and input/exhaust open/close timing.</div>=
<div class=3D"gmail_default" style=3D"font-family:georgia,serif;font-size:s=
mall"><br></div><div class=3D"gmail_default" style=3D"font-family:georgia,s=
erif;font-size:small">More importantly, I need a recommendation for cam ven=
dor/recommended grind.=C2=A0 Had a Kastner S9 in my last [now stolen] car -=
- but the gentleman who did the grinding =C2=A0has pasted on and Moon Eyes =
no longer does them.</div><div class=3D"gmail_default" style=3D"font-family=
:georgia,serif;font-size:small"><br></div><div class=3D"gmail_default" styl=
e=3D"font-family:georgia,serif;font-size:small">I know I have not said enou=
gh about the current cam -- just I am away from home and do not have the ca=
m grind card with me.</div><div class=3D"gmail_default" style=3D"font-famil=
y:georgia,serif;font-size:small"><br></div><div class=3D"gmail_default" sty=
le=3D"font-family:georgia,serif;font-size:small"><br></div></div>

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