acceptable cup or crown on flywheel face

tigermoth
tigermoth Expert Adviser
edited November -1 in HUDSON
hello, my flywheel has an .011" cup, center to edge. i have a second flywheel that has a .010" crown. my machinist friend wants to true up the flywheel. my questions are, what is an acceptable dimension for cupping or crowning on the flywheel face?

my other questions involve the lugs on the flywheel that engage the pressure plate. on one flywheel they are welded on the second flywheel they appear to be pressed or perhaps threaded in place. how do you remove the welded lugs if this face needs to be machined and are the lugs that aren't welded, pressed or threaded? thank you. regards, tom

Comments

  • [Deleted User]
    [Deleted User]
    tigermoth wrote:
    hello, my flywheel has an .011" cup, center to edge. i have a second flywheel that has a .010" crown. my machinist friend wants to true up the flywheel. my questions are, what is an acceptable dimension for cupping or crowning on the flywheel face?

    my other questions involve the lugs on the flywheel that engage the pressure plate. on one flywheel they are welded on the second flywheel they appear to be pressed or perhaps threaded in place. how do you remove the welded lugs if this face needs to be machined and are the lugs that aren't welded, pressed or threaded? thank you. regards, tom
    Walt here. Contact Doug Wildrick at hetdrdoug96@comcast.net Drop the het. He is our clutch man.
  • tigermoth
    tigermoth Expert Adviser
    for those that are curious, doug wildrick says this cup/crown on these two flywheels is acceptable. my thanks to doug. regards, tom
  • [Deleted User]
    [Deleted User]
    If the flywheels are not warped, they will work OK. If they have to be turned, you leave the lugs in and turn both inner and outer. This works because no working part touches the area between the lugs.
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