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IMO 80-85 is OK. But I wouldn't go any higher as it will be more apt to leak
(plus the possibility of blowing the oil canister
off) and/or shear the drive to the oil pump.
That said, I had a freshly rebuilt TR3A motor that would hit the peg on cold
starts even though the valve was set to 70 psi.
(Something about straight 40 weight racing oil in winter <g>) And it didn't
appear to suffer any ill effects before I changed the
oil to a grade more suitable for winter.
But before changing it, I'd double-check the pressure gauge. They sometimes
read high, even if they return to zero.
-- Randall
_____
From: Triumphs [mailto:triumphs-bounces@autox.team.net] On Behalf Of Gary
Nafziger
Sent: Wednesday, May 13, 2015 2:15 PM
To: triumphs@autox.team.net
Subject: [TR] oil pressure
Is there any concern over high oil pressure? On a newly rebuilt tr-3 motor I'm
getting 80-85 lbs. of pressure at 60-65 miles per
hour. I love the improvement in pressure but am wondering if it's too high.
gary nafziger
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<DIV dir=3Dltr align=3Dleft><SPAN class=3D381192202-14052015><FONT =
color=3D#0000ff=20
size=3D2 face=3DArial>IMO 80-85 is OK. But I wouldn't go any =
higher as=20
it will be more apt to leak (plus the possibility of blowing the oil =
canister=20
off) and/or shear the drive to the oil pump.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D381192202-14052015><FONT =
color=3D#0000ff=20
size=3D2 face=3DArial></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D381192202-14052015><FONT =
color=3D#0000ff=20
size=3D2 face=3DArial>That said, I had a freshly rebuilt TR3A motor that =
would hit=20
the peg on cold starts even though the valve was set to 70 psi. =
(Something=20
about straight 40 weight racing oil in winter <g>) And it =
didn't=20
appear to suffer any ill effects before I changed the oil to a grade =
more=20
suitable for winter.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D381192202-14052015><FONT =
color=3D#0000ff=20
size=3D2 face=3DArial></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D381192202-14052015><FONT =
color=3D#0000ff=20
size=3D2 face=3DArial>But before changing it, I'd double-check the =
pressure=20
gauge. They sometimes read high, even if they return to=20
zero.</FONT></SPAN></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>-- Randall </FONT></DIV>
<DIV> </DIV><BR>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #0000ff 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: =
5px; MARGIN-RIGHT: 0px"=20
dir=3Dltr>
<DIV dir=3Dltr lang=3Den-us class=3DOutlookMessageHeader align=3Dleft>
<HR tabIndex=3D-1>
<FONT size=3D2 face=3DTahoma><B>From:</B> Triumphs=20
[mailto:triumphs-bounces@autox.team.net] <B>On Behalf Of </B>Gary=20
Nafziger<BR><B>Sent:</B> Wednesday, May 13, 2015 2:15 PM<BR><B>To:</B> =
triumphs@autox.team.net<BR><B>Subject:</B> [TR] oil=20
pressure<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV=20
style=3D"BACKGROUND-COLOR: #fff; FONT-FAMILY: HelveticaNeue, Helvetica =
Neue, Helvetica, Arial, Lucida Grande, sans-serif; COLOR: #000; =
FONT-SIZE: 24px">
<DIV dir=3Dltr id=3Dyui_3_16_0_1_1431551181703_2877>Is there any =
concern over high=20
oil pressure? On a newly rebuilt tr-3 motor I'm getting 80-85 =
lbs. of=20
pressure at 60-65 miles per hour. I love the improvement in =
pressure but=20
am wondering if it's too high.</DIV>
<DIV dir=3Dltr id=3Dyui_3_16_0_1_1431551181703_3214><BR></DIV>
<DIV dir=3Dltr id=3Dyui_3_16_0_1_1431551181703_3213>gary=20
nafziger<BR></DIV></DIV></BLOCKQUOTE></BODY></HTML>
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