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What happen to aftermarket cams?

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  • What happen to aftermarket cams?

    I have a set of Web cams 505's that where previously installed in my motor. Im rebuilding the motor and im at the point to install the cams but im a little concerned. The cam tips are shiny, and some chipping on the side of the lobes. from my understanding Web welds and regrinds the cams? Is it possible the shiny at the tip maybe due to the dissimilar weld/casting metals? My brother seems to think that there may have been lots of valve float and the bucket was only making contact with the cam at the tip? Per webs cams website these cams can be used with stock valve train. Should i just run them or pitch them? Im going to email Web to get there opinion but i figured i would ask her first. What could have caused this?





  • #2
    that lobe profile looks awful. and looks more reminicent of too much spring pressure... not a float issue.
    Trees aren't kind to me...

    currently: 2 88Ls (Scrappy and Jersey), 88LX, 90L(Pepe), 91L, 91GL (Skippy) 93 GL Sport (the Mighty Favakk), 94 (Bruce) & 95 Aspire SEs, 97 Aspire (The Joker),
    94 Justy 4WD, 87 Fiero GT, plus 2 parts cars. That's my fleet.

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    • #3
      Mazda Miata (90-93) 1.6L DOHC 16v
      Part #:
      37-001
      Grind:
      505/505+2.5°(5°)
      Intake
      Exhaust
      Valve Lash (Inch):
      HYD
      HYD
      Valve Lift (Inch):
      0.352
      0.352
      Valve Lift (mm):
      8.94
      8.94
      Advertised Duration:
      220°
      225°
      Duration @ 0.050":
      200°
      205°
      Lobe Center:
      111°
      111°
      Intake
      Opens
      -11°
      Before
      TDC
      Exhaust
      Opens
      33.5°
      Before
      BDC
      Intake
      Closes
      31°
      After
      BDC
      Exhaust
      Closes
      -8.5°
      After
      TDC

      i believe these are the specs for the 1.6 cams

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