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All these type of clutches (Quatermaster, Tilton, etc.) suffer from the same
thing, that the pressure plate warps from heat.
The good news: They are designed to be ground flat. Put it on a magnetic
table of a grinding machine and let it surface then you have good new
clutch.
Cheers
Chris
Im Auftrag von marty via Fot
Gesendet: Donnerstag, 18. April 2019 17:47
Betreff: [Fot] Quartermaster Clutches
Looking for some clutch help. I recently disassembled a quartermaster Pro
7.25 single disc clutch, not from my car. I have no experience with this
style of clutch. Upon disassembly I observe that the flywheel insert, clutch
disc and pressure plate only have had contact on the outer 3/8 " diameter.
Upon further investigation the flywheel insert surface is flat. The clutch
surface thickness is uniform but if I lay a straight edge across the face of
the Quartermaster pressure plate it cups outward. My initial thought was
"bingo" this would cause the wear pattern I am observing. Must be something
out of whack with the pressure plate insert. I contacted quartermaster and
described what I saw and they were not much help other than "something must
be warped". I was getting ready to order a replacement pressure plate insert
but I stopped over to Jason's shop and saw that he was working on a car that
also ran a quartermaster Pro 7.25 clutch but this was a double disc. I took
it apart and all components had even wear across the faces as one would
expect. I layed a straight edge across the pressure plate out of this
assembly expecting to see a flat contact surface and was surprised to see
the same cupped condition where the outer pressure plate surface would
contact the clutch disc first as the one at home. Now I am at a loss as to
what would cause this improper wear pattern. Any experience with this?
Marty
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class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-US'>All these type of clutches =
(Quatermaster, Tilton, etc…) suffer from the same thing, that the =
pressure plate warps from heat.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-US'>The good news: They are designed to =
be ground flat. Put it on a magnetic table of a grinding machine and let =
it surface then you have good new clutch.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-US'>Cheers<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-US'>Chris<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><di=
v style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b>Von:</b> Fot <<a =
href=3D"mailto:fot-bounces@autox.team.net";>fot-bounces@autox.team.net</a>=
> <b>Im Auftrag von </b>marty via Fot<br><b>Gesendet:</b> Donnerstag, =
18. April 2019 17:47<br><b>An:</b> <a =
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a><br><b>Betreff:<=
/b> [Fot] Quartermaster Clutches<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>Looking for some clutch help. I =
recently disassembled a quartermaster Pro 7.25 single disc clutch, not =
from my car. I have no experience with this style of clutch. Upon =
disassembly I observe that the flywheel insert, clutch disc and pressure =
plate only have had contact on the outer 3/8 " diameter. Upon =
further investigation the flywheel insert surface is flat. The clutch =
surface thickness is uniform but if I lay a straight edge across the =
face of the Quartermaster pressure plate it cups outward. My =
initial thought was "bingo" this would cause the wear pattern =
I am observing. Must be something out of whack with the pressure plate =
insert. I contacted quartermaster and described what I saw and =
they were not much help other than "something must be warped". =
I was getting ready to order a replacement pressure plate insert but I =
stopped over to Jason's shop and saw that he was working on a car that =
also ran a quartermaster Pro 7.25 clutch but this was a double disc. I =
took it apart and all components had even wear across the faces as one =
would expect. I layed a straight edge across the pressure plate =
out of this assembly expecting to see a flat contact surface and was =
surprised to see the same cupped condition where the outer pressure =
plate surface would contact the clutch disc first as the one at home. =
Now I am at a loss as to what would cause this improper wear pattern. =
Any experience with this?<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'><o:p> </o:p></span></p></div>=
<div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;color:black'>Marty<o:p></o:p></span></p></div><=
/div></body></html>
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http://www.fot-racing.com
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