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This is a multi-part message in MIME format.
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Hi,
=20
the machine shop I=92m going to straighten the crank with a hammer and a
chisel and bronze layer.
Takes 5 minutes to straighten a crank.
Cast iron parts they straighten with torch and heat.
=20
Cheers
Chris
=20
=20
Von: Fot [mailto:fot-bounces@autox.team.net] Im Auftrag von Diesel
Performance Parts - Info via Fot
Gesendet: Dienstag, 6. Januar 2015 14:11
An: 'Scott Janzen'
Cc: 'fot@autox.team.net'
Betreff: Re: [Fot] Cam Bearings expansion
=20
Scott,
=20
I doubt if they can straighten the cam they are usually too brittle as
compared to a crankshaft etc.
The old timers used to have a shaving tool for the poured babbit =
bearing
engine of days long gone. You could use one of those to =93trim=94 a =
little off.
=20
I would pull the cam bearings double check the cam bores for alignment, =
and
diameter. If they are OK then make sure the cam bearings are all =
consistent
in thickness. If they are then it=92s the cam, it is either oversize or
undersize on the nearing journals or bent.=20
=20
Mark Craig
Diesel Performance Parts, INC.
411 Allied Drive
Nashville, TN 37211
866-455-7788 Phone
615-834-9923 Fax
=20
www.dieselperformanceparts.com
From: Fot [mailto:fot-bounces@autox.team.net] On Behalf Of Scott Janzen =
via
Fot
Sent: Monday, January 05, 2015 8:41 PM
To: 'Friends of Triumph' Triumph
Subject: [Fot] Cam Bearings expansion
=20
I've got a bit of cam bind in a new cam I'm installing in the GT6. It
appears to be a combination of slight run-out (i.e., the cam is slightly
bent, 1/1000 of runout in the middle), journal size right at the factory
maximum spec, and installed bearing I.D. that is at or below the factory
minimum I.D.
=20
It's also possible that the block is not bored perfectly straight as the
binding is not consistent around the rotation, but another cam I have, =
with
journal diameters 5/10,000 smaller, turns freely. I have not checked =
that
cam for run-out.
=20
Question is, is there a tool to "expand" the bearings into the block and
possibly gain a bit of clearance? I'm told the factory manual for one =
of
those Octagon cars calls for such a tool. I'm using the typical =
Spitfire
bearings.
=20
Next stop is a machine shop with a crank straightening machine to see if
they can use it to straighten a cam.
=20
=20
=20
=20
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</o:shapelayout></xml><![endif]--></head><body lang=3DDE =
link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Hi,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>the machine shop I’m going to straighten the crank with a =
hammer and a chisel and bronze layer.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Takes 5 minutes to straighten a crank.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Cast iron parts they straighten with torch and =
heat.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Cheers<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Chris<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span><=
/b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Fot [mailto:fot-bounces@autox.team.net] <b>Im Auftrag von </b>Diesel =
Performance Parts - Info via Fot<br><b>Gesendet:</b> Dienstag, 6. Januar =
2015 14:11<br><b>An:</b> 'Scott Janzen'<br><b>Cc:</b> =
'fot@autox.team.net'<br><b>Betreff:</b> Re: [Fot] Cam Bearings =
expansion<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Scott,<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>I doubt if they can straighten the cam they are usually too brittle =
as compared to a crankshaft etc.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>The old timers used to have a shaving tool for the poured =
babbit bearing engine of days long gone. You could use one of =
those to “trim” a little off. <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>I would pull the cam bearings double check the cam bores for =
alignment, and diameter. If they are OK then make sure the cam bearings =
are all consistent in thickness. If they are then it’s the =
cam, it is either oversize or undersize on the nearing journals or bent. =
<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><div><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'=
>Mark Craig<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'=
>Diesel Performance Parts, INC.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'=
>411 Allied Drive<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'=
>Nashville, TN 37211<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'=
>866-455-7788 Phone<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'=
>615-834-9923 Fax<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'=
> <o:p></o:p></span></p></div><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'=
><a =
href=3D"http://www.dieselperformanceparts.com";>www.dieselperformanceparts=
.com</a></span><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p></o:p></span></p><div><div style=3D'border:none;border-top:solid =
#E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif"'>From:</span=
></b><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif"'> Fot [<a =
href=3D"mailto:fot-bounces@autox.team.net";>mailto:fot-bounces@autox.team.=
net</a>] <b>On Behalf Of </b>Scott Janzen via Fot<br><b>Sent:</b> =
Monday, January 05, 2015 8:41 PM<br><b>To:</b> 'Friends of Triumph' =
Triumph<br><b>Subject:</b> [Fot] Cam Bearings =
expansion<o:p></o:p></span></p></div></div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>I've got a bit of cam bind in a new cam I'm installing in =
the GT6. It appears to be a combination of slight run-out (i.e., =
the cam is slightly bent, 1/1000 of runout in the middle), journal size =
right at the factory maximum spec, and installed bearing I.D. that is at =
or below the factory minimum I.D.<o:p></o:p></span></p><div><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US>It's also possible that the block =
is not bored perfectly straight as the binding is not consistent around =
the rotation, but another cam I have, with journal diameters 5/10,000 =
smaller, turns freely. I have not checked that cam for =
run-out.<o:p></o:p></span></p><div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US>Question is, is there a tool to =
"expand" the bearings into the block and possibly gain a bit =
of clearance? I'm told the factory manual for one of those Octagon =
cars calls for such a tool. I'm using the typical Spitfire =
bearings.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span lang=3DEN-US>Next stop is a machine shop with a =
crank straightening machine to see if they can use it to straighten a =
cam.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p></div><div><p =
class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p></div></div></div></body></html>
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
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