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Why would you want to rebuild an engine with an old, out-of-round crankshaf=
t? The machine shop work to get it polished/ground and the block line-bored=
doesn't cost much and gives you good piece of mind that your rebuilt engin=
e will last.
Specifically on bearings, I've used the King tri-metal bearings on all my r=
ebuilds and have been happy with them. But they were all used on polished (=
and balanced) cranks and line-bored blocks.
Joel...
________________________________
From: asg123@centurylink.net <asg123@centurylink.net>
Sent: Thursday, October 3, 2019 8:24 AM
To: triumphs@autox.team.net <triumphs@autox.team.net>
Subject: [TR] Crank shaft bearings,1965 TR4A
Good day all. Any experience or recommendations for best bearings to use =
on an old, maybe not so concentric, crankshaft. Mechanic/ friend has scho=
oled me that a perfect, recently machined crankshaft can tolerate hard bear=
ings that will last a long time without any need to conform to crankshaft i=
rregularities. An old out of round crank needs bearing material that is s=
omewhat malleable and can embed into the irregularities but is so soft they=
usually don't last as long. The old Clevite 77 bearings had both advanta=
ges of embeddability and a durable alloy. However, it seems that those NOS=
bearings are now unavailable I think I read that the King Bearings are th=
e closest to them. Thanks, Arnold
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<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
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ttom:0;} </style>
</head>
<body dir=3D"ltr">
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 14pt;=
color: rgb(0, 0, 0);">
Why would you want to rebuild an engine with an old, out-of-round crankshaf=
t? The machine shop work to get it polished/ground and the block line-bored=
doesn't cost much and gives you good piece of mind that your rebuilt engin=
e will last.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 14pt;=
color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 14pt;=
color: rgb(0, 0, 0);">
Specifically on bearings, I've used the King tri-metal bearings on all my r=
ebuilds and have been happy with them. But they were all used on polished (=
and balanced) cranks and line-bored blocks.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 14pt;=
color: rgb(0, 0, 0);">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 14pt;=
color: rgb(0, 0, 0);">
Joel...</div>
<div>
<div id=3D"appendonsend"></div>
<div style=3D"font-family:Calibri,Helvetica,sans-serif; font-size:14pt; col=
or:rgb(0,0,0)">
<br>
</div>
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" co=
lor=3D"#000000" style=3D"font-size:11pt"><b>From:</b> asg123@centurylink.ne=
t <asg123@centurylink.net><br>
<b>Sent:</b> Thursday, October 3, 2019 8:24 AM<br>
<b>To:</b> triumphs@autox.team.net <triumphs@autox.team.net><br>
<b>Subject:</b> [TR] Crank shaft bearings,1965 TR4A</font>
<div> </div>
</div>
<div>
<div style=3D"font-family:arial,helvetica,sans-serif; font-size:12pt; color=
:#000000">
<div>Good day all. Any experience or recommendations for best b=
earings to use on an old, maybe not so concentric, crankshaft. =
Mechanic/ friend has schooled me that a perfect, recently machined cranksha=
ft can tolerate hard bearings that will last a long
time without any need to conform to crankshaft irregularities. =
An old out of round crank needs bearing material that is somewhat malleabl=
e and can embed into the irregularities but is so soft they usually don't l=
ast as long. The old Clevite 77 bearings
had both advantages of<span class=3D"x_st"><em> embeddability</em></span> =
and a durable alloy. However, it seems that those NOS bearings are no=
w unavailable I think I read that the King Bearings are the closest t=
o them. Thanks, Arnold
<br>
</div>
</div>
</div>
</div>
</body>
</html>
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