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The lifter faces are not flat. They have a crown so they rotate in the
bores as the cam lobes move across them. At low RPMs the lifters do not
rotate so much. It is absolutely essential on initial start up that the
lifters are rotating so the cam and lifters can properly bed in. This is
accomplished if the engine is reving at least 1500 RPM.
On Sun, May 10, 2020 at 2:24 PM Michael MacLean <rrengineer.mike@att.net>
wrote:
> Why do I keep hearing on initial start up immediately get it up to approx
> 2000 rpm and run it 20 minutes to bed in the lifters and cam. Old wives
> tale. I have seen it done.
> Mike MacLean
>
> Sent from AT&T Yahoo Mail on Android
> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature>
>
> On Sun, May 10, 2020 at 2:09 PM, Michael Salter
> <michaelsalter@gmail.com> wrote:
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Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">The lifter faces are not flat. They have a crown so they r=
otate in the bores as the cam lobes move across them. At low RPMs the lifte=
rs do not rotate so much.=C2=A0 It is absolutely essential on initial start=
up that the lifters are rotating so the cam and lifters can properly bed i=
n. This is accomplished if the engine is reving at least 1500 RPM.<br></div=
><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Su=
n, May 10, 2020 at 2:24 PM Michael MacLean <<a href=3D"mailto:rrengineer=
.mike@att.net" target=3D"_blank">rrengineer.mike@att.net</a>> wrote:<br>=
</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;b=
order-left:1px solid rgb(204,204,204);padding-left:1ex">Why do I keep heari=
ng on initial start up immediately get it up to approx 2000 rpm and run it =
20 minutes to bed in the lifters and cam.=C2=A0 Old wives tale.=C2=A0 I hav=
e seen it done.<div id=3D"gmail-m_-1252571381885206011gmail-m_-319610850442=
4182911yMail_cursorElementTracker_1589145805313">Mike MacLean<br><br><div i=
d=3D"gmail-m_-1252571381885206011gmail-m_-3196108504424182911ymail_android_=
signature"><a id=3D"gmail-m_-1252571381885206011gmail-m_-319610850442418291=
1ymail_android_signature_link" href=3D"https://go.onelink.me/107872968?pid=
=3DInProduct&c=3DGlobal_Internal_YGrowth_AndroidEmailSig__AndroidUsers&=
amp;af_wl=3Dym&af_sub1=3DInternal&af_sub2=3DGlobal_YGrowth&af_s=
ub3=3DEmailSignature" target=3D"_blank">Sent from AT&T Yahoo Mail on An=
droid</a></div> <br> <blockquote style=3D"margin:0px 0px 20px"> <div style=
=3D"font-family:Roboto,sans-serif;color:rgb(109,0,246)"> <div>On Sun, May 1=
0, 2020 at 2:09 PM, Michael Salter</div><div><<a href=3D"mailto:michaels=
alter@gmail.com" target=3D"_blank">michaelsalter@gmail.com</a>> wrote:</=
div> </div> <div style=3D"padding:10px 0px 0px 20px;margin:10px 0px 0px;bor=
der-left:1px solid rgb(109,0,246)"> _______________________________________=
________<br clear=3D"none">Support Team.Net <a shape=3D"rect" href=3D"http:=
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lear=3D"none"><br clear=3D"none"> </div> </blockquote></div>_______________=
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