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Advancing intake cam

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    Advancing intake cam

    When advancing the intake cam for more low end torque, do you just follow the same steps when just installing them normally. But just rotate the intake cam so instead of the the arrow pointing to the 20th link, it is two grooves on the spocket away from the 20th link?

    I hope I explained that clear enough. I am just trying to learn as much as I can about all the different tricks that can be done on these engines. So I can decide on the best setup that I want to go with.

    I also just want to say thanks for everyone sharing their knowledge and experiences when answering my questions. It has been invaluable.

    Adam

    #2
    Originally posted by akreider View Post
    When advancing the intake cam for more low end torque, do you just follow the same steps when just installing them normally. But just rotate the intake cam so instead of the the arrow pointing to the 20th link, it is two grooves on the spocket away from the 20th link?

    I hope I explained that clear enough. I am just trying to learn as much as I can about all the different tricks that can be done on these engines. So I can decide on the best setup that I want to go with.

    I also just want to say thanks for everyone sharing their knowledge and experiences when answering my questions. It has been invaluable.

    Adam
    You need slotted sprockets and set the lobe center at about 106 on the intake and 109 or so on the exhaust and that will give you a little more bottom.

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      #3
      You got to be careful when you do this and check valve to piston clearance before and after with a dial indicator.

      Also if the motor is over-rev the valves could touch the pistons cause that safety clearance is gone.

      I've bent a few valves trying to find that sweet spot :-( seems the motor didn't like that 14K burnout
      1166cc 1/8 ET 6.09@111.88
      1166cc on NOS, 1/8 ET 5.70@122.85
      1395cc 1/8 ET 6.0051@114.39
      1395cc on NOS, 1/8 ET 5.71@113.98 "With a broken wrist pin too"
      01 Sporty 1/8 ET 7.70@92.28, 1/4 ET 12.03@111.82

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