Register

User Tag List

Thanks Thanks:  1
Likes Likes:  0
Dislikes Dislikes:  0
Results 1 to 8 of 8
  1. #1
    Member
    Join Date
    Jun 2017
    Location
    Dade County
    Posts
    35
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    Retarding a cam What does it do on a 212cc??

    I heard of people retarding the cam from the Marking circle on the cam skipping a tooth or so would it delay power band to kick in later

  2. #2
    Senior Member TheDullCarbide's Avatar
    Join Date
    Aug 2017
    Location
    Allentown, PA
    Posts
    721
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Skipping a tooth on the cam gear would make a huge difference in cam timing, enough to make the engine run worse than before. What most people do on Hondas, clones, and Preds is they twist the gear on the crankshaft. It's only held on there by a weak interference fit. A little heat and torque and it'll move.

    Retarding the cam will give you more top-end power at the expense of bottom-end torque. Advancing a cam will do the exact opposite. As far as I know, the stock cam is already a very retarded cam so retarding it more won't do much. The stock cam would need much more duration for retarding to help, hence the aftermarket cams.

  3. #3
    Senior Member trinik7597's Avatar
    Join Date
    May 2013
    Location
    pine plains n.y.
    Posts
    5,884
    Mentioned
    20 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    He said nothing about a stock cam ... And he is asking about a stroker crank in another thread .. Soflo if you want to play with cam timing get a billet adjustable cam ..

  4. #4
    Member
    Join Date
    Jun 2017
    Location
    Dade County
    Posts
    35
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Twisting what's the meaning of it ,
    doing it to the cam or the crankshaft.?

  5. #5
    Senior Member TheDullCarbide's Avatar
    Join Date
    Aug 2017
    Location
    Allentown, PA
    Posts
    721
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Quote Originally Posted by SoFloMiniBikez View Post
    Twisting what's the meaning of it ,
    doing it to the cam or the crankshaft.?
    Nice irony you got there.rofl2.gif

    What I said refers to the gear that is on the crankshaft. It is a light press-fit on the crankshaft. If you heat it up a bit, you can turn it on the crankshaft. There is a tool out there to do it correctly but it's wayy too expensive($189.99) Home rigory can do it just as well.

    What @trinik7597 said is to buy a billet aftermarket cam. This way you would be able to turn the gear on the cam. The gear on these cams bolts on to the camshaft. The gear can have slots or different holes to adjust timing. Be aware that these cams are a bit more expensive and you would loose the compression release. You could say goodbye to your pull-starter if you're running high compression.

    The billet cam idea came from an old flathead trick. Builders used to torch the stock cam red hot between the cam gear and the closest lobe and physically twist the cam in a vise.

    Hope this cleared up the confusion.
    Last edited by TheDullCarbide; 02-13-2018 at 11:51 PM.

  6. Thanks edgarfan thanked for this post
  7. #6
    Member
    Join Date
    Jun 2017
    Location
    Dade County
    Posts
    35
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Quote Originally Posted by TheDullCarbide View Post
    Nice irony you got there.rofl2.gif

    What I said refers to the gear that is on the crankshaft. It is a light press-fit on the crankshaft. If you heat it up a bit, you can turn it on the crankshaft. There is a tool out there to do it correctly but it's wayy too expensive($189.99) Home rigory can do it just as well.

    What @trinik7597 said is to buy a billet aftermarket cam. This way you would be able to turn the gear on the cam. The gear on these cams bolts on to the camshaft. the gear can have slots or different holes to adjust timing. Be aware that these cams are a bit more expensive and you would loose the compression release. You could say goodbye to your pull-starter if you're running high compression.

    The billet cam idea came from an old flathead trick. Builders used to torch the stock cam red hot between the cam gear and the closest lobe and physically twist the cam in a vise.

    Hope this cleared up the confusion.

  8. #7
    Senior Member
    Join Date
    May 2010
    Location
    bc
    Posts
    275
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Here's a tool kit that will help with the twisting of the cam gear on the crank...

    Tool, Crank Cam Gear Twister [KW-Twist] - $179.99 : Kart Works Canada , Online Store

  9. #8
    Senior Member TheDullCarbide's Avatar
    Join Date
    Aug 2017
    Location
    Allentown, PA
    Posts
    721
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Quote Originally Posted by mckutzy View Post
    Here's a tool kit that will help with the twisting of the cam gear on the crank...

    Tool, Crank Cam Gear Twister [KW-Twist] - $179.99 : Kart Works Canada , Online Store
    Yup, that was the one. Thanks for finding it.

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •