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Re: [Healeys] [OT] Solid Lifters

To: Bob Spidell <bspidell@comcast.net>, Healeys <healeys@autox.team.net>
Subject: Re: [Healeys] [OT] Solid Lifters
From: Harold Manifold via Healeys <healeys@autox.team.net>
Date: Tue, 1 Jun 2021 13:03:28 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <0affc9a4-4a45-a4b9-55e6-c7d071fc9a27@comcast.net>
Thread-topic: RE: [Healeys] [OT] Solid Lifters
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--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72" style=3D=
'word-wrap:break-word'><div class=3DWordSection1><p class=3DMsoNormal>Bob,<=
/p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>This is h=
ow I have understood the differences but welcome other points of view. Soli=
d lifters with or without rollers are one component of the valve train whic=
h was either designed as a solid lifter or hydraulic lifter valve train. In=
 other words don=E2=80=99t replace hydraulic lifters with solid lifters wit=
hout changing the cam and push rods and possibly the rocker assembly.</p><p=
 class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>At normal engi=
ne RPM=E2=80=99s there isn=E2=80=99t any significant different between the =
two type of valve trains but at high engine RPM=E2=80=99s the solid lifter =
valve train should produce more horsepower (5-10% range) all other things b=
eing equal. Solid lifters require much more adjustment and don=E2=80=99t au=
tomatically compensate to thermal expansion of engine parts as hydraulic li=
fters do.</p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal=
>Solid lifters are best suited to race cars or competitions engines that ru=
n at high engine RPM=E2=80=99s. The peak horsepower for a solid lifter engi=
ne will be higher and at a higher RPM than a hydraulic lifter engine.</p><p=
 class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Harold<o:p></o=
:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><div style=3D'mso-element:=
para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0i=
n 0in 0in'><p class=3DMsoNormal style=3D'border:none;padding:0in'><b>From: =
</b><a href=3D"mailto:bspidell@comcast.net";>Bob Spidell</a><br><b>Sent: </b=
>Tuesday, June 1, 2021 9:54 AM<br><b>To: </b><a href=3D"mailto:healeys@auto=
x.team.net">Healeys</a><br><b>Subject: </b>[Healeys] [OT] Solid Lifters</p>=
</div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Lister=
s,</p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>I've h=
eard/read that solid lifters were always/mostly used in OHV cars </p><p cla=
ss=3DMsoNormal>for performance. Anyone know the theory? Is it just because =
you can set </p><p class=3DMsoNormal>the lash exactly the way you want it, =
as opposed to 'squishy' hydraulic </p><p class=3DMsoNormal>lifters?</p><p c=
lass=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Also, it seems l=
ike solid roller lifters would be best overall, since </p><p class=3DMsoNor=
mal>you can set the lash exactly but, presumably, avoid the potential issue=
s </p><p class=3DMsoNormal>with solid lifters (spalled lobes and lifter fac=
es)?</p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Bob<=
/p><p class=3DMsoNormal>_______________________________________________</p>=
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