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I=E2=80=99m not 100% on this so others can chime in and correct me.=20
My understanding is when the cam rolls by and lifts the tappet it will also r=
otate it a little bit so it doesn=E2=80=99t continue to strike the same spot=
over and over and over. Too much zinc, too slippery, doesn=E2=80=99t rotate=
the tappet, wears the cam lobe prematurely.
Sent from my iPhone
> On Sep 9, 2018, at 1:17 PM, Paul Dorsey <dorpaul1@gmail.com> wrote:
>=20
> Don=E2=80=99t we have flat tappet engines? Why do they need to rotate?
>=20
>> On Sun, Sep 9, 2018 at 2:58 PM Rye Livingston <ryel@mac.com> wrote:
>> FYI - if a little zinc is good, a lot is NOT better. Things get too slipp=
ery and the tappets don=E2=80=99t rotate on the cam lobes. I learned this th=
e hard way and the machine shop informed me of the error of too much zinc.
>>=20
>> So either Valvoline, Brad Penn or Kendall that have ZDDP, or half a bottl=
e of Red Line break-in oil per instructions, is the way to go.
>>=20
>> Rye
>>=20
>> Sent from my iPhone
>>=20
>> On Sep 9, 2018, at 7:24 AM, Randall <tr3driver@ca.rr.com> wrote:
>>=20
>> >> Five or 10 years ago I didn't think there was much of an =20
>> >> zinc ingredient in Valvoline racing oil. Have things Change D?
>> >=20
>> > There was a brief period where they reduced it slightly; but Valvoline
>> > Racing has always had ZDDP in it. It's not entirely clear to me that 9=
00
>> > PPM is worse than 1100 PPM as long as you change oil frequently; more j=
ust
>> > lets you run the oil longer before it is depleted. But the consumer
>> > reaction was apparently enough to convince them to put it back up.
>> >=20
>> > -- Randall
>> >=20
>> > ** triumphs@autox.team.net **
>> >=20
>> > Donate: http://www.team.net/donate.html
>> > Archive: http://www.team.net/pipermail/triumphs http://www.team.net/ar=
chive
>> >=20
>> > Unsubscribe/Manage: http://autox.team.net/mailman/options/triumphs/ryel=
@mac.com
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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">I=E2=80=99m not 100% on this so others can c=
hime in and correct me. <div><br></div><div>My understanding is when th=
e cam rolls by and lifts the tappet it will also rotate it a little bit so i=
t doesn=E2=80=99t continue to strike the same spot over and over and over. T=
oo much zinc, too slippery, doesn=E2=80=99t rotate the tappet, wears the cam=
lobe prematurely.<br><br><div id=3D"AppleMailSignature">Sent from my iPhone=
</div><div><br>On Sep 9, 2018, at 1:17 PM, Paul Dorsey <<a href=3D"mailto=
:dorpaul1@gmail.com">dorpaul1@gmail.com</a>> wrote:<br><br></div><blockqu=
ote type=3D"cite"><div><div>Don=E2=80=99t we have flat tappet engines? Why d=
o they need to rotate?</div><div><br><div class=3D"gmail_quote"><div dir=3D"=
ltr">On Sun, Sep 9, 2018 at 2:58 PM Rye Livingston <<a href=3D"mailto:rye=
l@mac.com">ryel@mac.com</a>> wrote:<br></div><blockquote class=3D"gmail_q=
uote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex=
">FYI - if a little zinc is good, a lot is NOT better. Things get too slippe=
ry and the tappets don=E2=80=99t rotate on the cam lobes. I learned this the=
hard way and the machine shop informed me of the error of too much zinc.<br=
>
<br>
So either Valvoline, Brad Penn or Kendall that have ZDDP, or half a bottle o=
f Red Line break-in oil per instructions, is the way to go.<br>
<br>
Rye<br>
<br>
Sent from my iPhone<br>
<br>
On Sep 9, 2018, at 7:24 AM, Randall <<a href=3D"mailto:tr3driver@ca.rr.co=
m" target=3D"_blank">tr3driver@ca.rr.com</a>> wrote:<br>
<br>
>> Five or 10 years ago I didn't think there was much of an <br>=
>> zinc ingredient in Valvoline racing oil. Have things Change D=
?<br>
> <br>
> There was a brief period where they reduced it slightly; but Valvoline<=
br>
> Racing has always had ZDDP in it. It's not entirely clear to me t=
hat 900<br>
> PPM is worse than 1100 PPM as long as you change oil frequently; more j=
ust<br>
> lets you run the oil longer before it is depleted. But the consum=
er<br>
> reaction was apparently enough to convince them to put it back up.<br>
> <br>
> -- Randall<br>
> <br>
> ** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triumph=
s@autox.team.net</a> **<br>
> <br>
> Donate: <a href=3D"http://www.team.net/donate.html"; rel=3D"noreferrer" t=
arget=3D"_blank">http://www.team.net/donate.html</a><br>
> Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; rel=3D"nore=
ferrer" target=3D"_blank">http://www.team.net/pipermail/triumphs</a> <=
a href=3D"http://www.team.net/archive"; rel=3D"noreferrer" target=3D"_blank">=
> <br>
> Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/options/tr=
iumphs/ryel@mac.com" rel=3D"noreferrer" target=3D"_blank">http://autox.team.=
net/mailman/options/triumphs/ryel@mac.com</a><br>
</blockquote></div></div>
</div></blockquote></div></body></html>=
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** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive
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