212 optimum cam grind anyone have specs?

terraplane8
terraplane8 Senior Contributor
edited November -1 in HUDSON
With the engine ('36 model) steadily becoming more and more disassembled, I took the lifters out to have a look and found 2 broken lifters with the closing side broken off, plus trenches worn into all the lifters, some 60 thou deep. The cam looked pretty beaten up as well.



Now, does anyone have a suggestion for a cam grind that is better than the standard grind? Geoff Clark mentioned that the later models (post-war?) had a 5" radius on the lifters instead of 4" which gave a bit of a lift in the power. All I'm looking for is an engine that is more efficient, and will have 7:1 compression.



I'm hoping someone can suggest something as the cam needs re-grinding and it will be sent away next week, as well as the lifters to see if they are salvagable.

Comments

  • [Deleted User]
    [Deleted User]
    terraplane8 wrote:
    With the engine ('36 model) steadily becoming more and more disassembled, I took the lifters out to have a look and found 2 broken lifters with the closing side broken off, plus trenches worn into all the lifters, some 60 thou deep. The cam looked pretty beaten up as well.



    Now, does anyone have a suggestion for a cam grind that is better than the standard grind? Geoff Clark mentioned that the later models (post-war?) had a 5" radius on the lifters instead of 4" which gave a bit of a lift in the power. All I'm looking for is an engine that is more efficient, and will have 7:1 compression.



    I'm hoping someone can suggest something as the cam needs re-grinding and it will be sent away next week, as well as the lifters to see if they are salvagable.
    Hi---Check with Bob Rovegno on the cam & replace the lifters with new ones from Dale Cooper. Regrinding them gets below the hardness level & will quickly wear what you are calling trenches.---Cliff Minard.
  • Uncle Josh
    Uncle Josh Senior Contributor
    Do check the condition of the phenolic thrust washer behind the cam gear. If it's beat up or missing, it'll eat up your lifters and cam. About $20 from Dale Cooper.
  • Park_W
    Park_W Senior Contributor
    I think there are a lot of lifters out there that Al Saffrahn has expertly reground and are serving without problems. These old critters have pretty low rate valve springs, so cam and lifter wear isn't as much of a problem as one might expect, especially with modern oils.
  • [Deleted User]
    [Deleted User]
    terraplane8 wrote:
    With the engine ('36 model) steadily becoming more and more disassembled, I took the lifters out to have a look and found 2 broken lifters with the closing side broken off, plus trenches worn into all the lifters, some 60 thou deep. The cam looked pretty beaten up as well.



    Now, does anyone have a suggestion for a cam grind that is better than the standard grind? Geoff Clark mentioned that the later models (post-war?) had a 5" radius on the lifters instead of 4" which gave a bit of a lift in the power. All I'm looking for is an engine that is more efficient, and will have 7:1 compression.



    I'm hoping someone can suggest something as the cam needs re-grinding and it will be sent away next week, as well as the lifters to see if they are salvagable.
    Don't fool around with those lifters, contact Dale Cooper and get brand new ones. He has his ad in the March-April 09 WTN, page 41, third column bottom of page. Regound ones some times drop to low in the engine and can't get the wrench on the bottom to hold while adjusting. Walt.
  • Unknown
    Unknown
    Our company has been regrinding camshafts since 1970, but sold our stock of automotive cam masters a few years ago. We exclusively work on cams for industrial engines now. Sorry I can't help.



    Clay

    Kams, Inc. - cams and cam followers for industrial engines
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