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Technical Howard adjustable cam? (from an old ad)

Discussion in 'The Hokey Ass Message Board' started by Dave Downs, Mar 26, 2017.

  1. Dave Downs
    Joined: Oct 25, 2005
    Posts: 849

    Dave Downs
    Member
    from S.E. Penna

    I saw this in the 'Vintage Shots' Thread and have no idea what they are talking about.


    [​IMG]

    What do the numbers in each of the quadrants represent? I'm familiar with a cam diagram that looks like this -

    [​IMG]



    And the ad seems to imply that each lobe could be adjusted individually. Howard was/is a major cam grinder but this really puzzles me.
     
  2. quicksilverart46
    Joined: Dec 7, 2016
    Posts: 458

    quicksilverart46
    Member

    I am very sure It is the lash he is talking about. The lobes can not be adjusted but they can be ground with clearance ramps that allow a large range of lash settings. Say from .020 to .030. There is a formula for lash= degrees of lobe duration. But it is fact that loose valve lash = shorter valve timing and tighter lash = longer duration.


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  3. RmK57
    Joined: Dec 31, 2008
    Posts: 1,164

    RmK57
    Member

    I thought it could be done through the timing chain set up. Advancing or retarding cam timing like the Cloyes Hex-adjust.
     
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  4. David Gersic
    Joined: Feb 15, 2015
    Posts: 1,996

    David Gersic
    Member
    from DeKalb, IL

    Chain wouldn't adjust one lobe, which seems to be what the ad is claiming. I dunno, no idea how that'd work. Looks like Howards is still in business. Call up their tech line and ask?


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  5. henryj1951
    Joined: Sep 23, 2012
    Posts: 2,306

    henryj1951
    Member
    from USA

    Add SAYS revolutionary new cam, intake-n- exhaust in 5 min, but things that are adjustable are ---> well here see pictures.

    cam adj.jpg Cloyes_Hex_A_Just.jpg adjustable.jpg vari.jpg
     
    Last edited: Mar 26, 2017
  6. seb fontana
    Joined: Sep 1, 2005
    Posts: 5,996

    seb fontana
    Member
    from ct

    Any adjustable timing chain/sprockets will change all valves; the ad says 1 or 16..I believe the roller lifters had axles for the rollers on center and off set..When on center the degrees would be what the cam lobe was on center to the crank but by using the off set axle location you could advance or retard that one lifter/valve, still have the same lobe profile but just advanced or retarded by the five degrees, the duration [290] stays the same..IE, 20/90 [retarded 5]...25/85 [strait up]...30/80 [advanced 5]...BUT what I wrote maybe for another brand cam and I don't get why the timing cover has to be off or maybe means intake manifold and wouldn't work with solid lifters!..Yeah, call Howards; will find out if any one is there thats old enough to remember..!! LOL..
     
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  7. quicksilverart46
    Joined: Dec 7, 2016
    Posts: 458

    quicksilverart46
    Member

    Yes I think you are right about the changing the duration individually with offset axle on the roller but the ad claimed flat tappets were also adjustable?? It mentions the timing cover being off so it is a mystery . My earlier possible explanation of lash is already known to most tuners so that Idea is out too. Now I'm really curious.


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  8. 57Custom300
    Joined: Aug 21, 2009
    Posts: 1,268

    57Custom300
    Member
    from Arizona

     
  9. Dave Downs
    Joined: Oct 25, 2005
    Posts: 849

    Dave Downs
    Member
    from S.E. Penna

    Thanks for the replies - there was some original thinking in the 'old days'
     
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  10. Fordors
    Joined: Sep 22, 2016
    Posts: 2,295

    Fordors
    Member

    I'm in agreement with Seb on the offset axles and Howard's must have sold lifters at straight up, and also with a 5 or 10* offset. There is no other logical explanation, the axles have to be fixed in the lifter body otherwise there is no reliability.
    The mention of the timing cover and solid lifters just had to be invalid claims. I can remember a Howard's decal showing a roller lifter with scribed lines on it for 0* and then 5 and 10* on both the advance and retard side but that must have been in the early '60's. Calling Howard's today will probably get a big "Huh??"
    Howard Johansen had a lot of ideas for cams, his own injectors, even what must have been the first fabricated aluminum block with hemisphereical heads for the drags. The Polish Prince, Leland Kolb ran it one time in his dragster at an NHRA event before the association with the motto that said at the time "Ingenuity in Action" banned it.
    I have photos of the engine in a funny car chassis, I took them at an early meet at Rt. 66 Drag Strip where it was on display.
     
    Last edited: Mar 27, 2017
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  11. Jimbo17
    Joined: Aug 19, 2008
    Posts: 3,581

    Jimbo17
    Member

    How about just changing the rocker arms from a 1.6 to a 1.68 or higher.
    Valves open higher and it would change the characteristics of any cam.

    Jimbo
     
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  12. dreracecar
    Joined: Aug 27, 2009
    Posts: 2,869

    dreracecar
    Member
    from so-cal

    Howards cams sold the NAME off to another company many years ago. Bobby Johansen due to health issues closed the alu rod business a couple years ago, and Donnie Johansen grinds "Cacklefest"cams on occasion , Donnie would be the one to talk to about this as this is/was way before the name was sold
     
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  13. flatjack
    Joined: Feb 13, 2007
    Posts: 874

    flatjack
    Member

    Howards is now located here in Oshkosh, Wi. Competition Products bought them out, but have retained the name. As far as I know, they never got any of the old masters.
     
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  14. Roger O'Dell
    Joined: Jan 21, 2008
    Posts: 1,061

    Roger O'Dell
    Member

    Post above is correct, after Howard , one took over rods , one cams, Donnie had the cams, I used to stop by just to bs with Donnie, his sister was a property over, lots to see. First aluminum heads, I got a stock orig Chevy cam for my 56 vette. Howard was one of the thinkers. And I have no Idea how to change only one cylinder under the cam cover, maybe typo, on ad ???
     
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  15. This kind of stuff is what makes the Hamb so cool.
    Normal people don't know this kind of stuff :)
     
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  16. Speed Gems
    Joined: Jul 17, 2012
    Posts: 2,457

    Speed Gems
    Member

    I seen this a couple of years ago on COMP CAMS website, granted it was on April fools day.
    12719434_10153648573121025_2929790430486048015_o.jpg
     
    Last edited: Mar 27, 2017

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