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Retarding the timing by moving the pickup?

This is a discussion on Retarding the timing by moving the pickup? within the Grom Talk forums, part of the Honda Grom Forums category; Originally Posted by turpinator dmm on the O2 sensor wire! Yup i could do that too....

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Thread: Retarding the timing by moving the pickup?

  1. #11
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    Quote Originally Posted by turpinator View Post
    dmm on the O2 sensor wire!

    Yup i could do that too.

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    Anybody want to educate me on what dmm stands for? I'm unfamiliar with it.
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    Quote Originally Posted by estallings15 View Post
    Anybody want to educate me on what dmm stands for? I'm unfamiliar with it.
    Digital Multi-Meter
    estallings15 likes this.

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  5. #14
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    Quote Originally Posted by jtxr View Post
    Digital Multi-Meter
    Lol...

    Well OK then. Thanks.
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    annnywayy. took the flywheel cover off, there are 9 raised spots, split by 30 degrees each (patterned for 12). Is it possible? Maybe, if you move the speed pickup. But how will that be accomplished? Its not like theres tons of room there to re-position the sensor.

    If you wanted to make it easy, you could grind out the keyway on one side or the other, and then grind out the opposing side on the flywheel, along with a larger key to re-position it. Or you could grind just 1 out, and make an offset type woodruff key.


    Orr... It turns out they already make these, without the need to increase the size of the slot. Not sure how small they go. ex https://www.summitracing.com/parts/m...HBQaAqH88P8HAQ

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    Serious question here...
    What plug are you running in the bije currently? What fuel? And I assume by reading it's the finbro ECU?

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    Quote Originally Posted by turpinator View Post
    annnywayy. took the flywheel cover off, there are 9 raised spots, split by 30 degrees each (patterned for 12). Is it possible? Maybe, if you move the speed pickup. But how will that be accomplished? Its not like theres tons of room there to re-position the sensor.

    If you wanted to make it easy, you could grind out the keyway on one side or the other, and then grind out the opposing side on the flywheel, along with a larger key to re-position it. Or you could grind just 1 out, and make an offset type woodruff key.


    Orr... It turns out they already make these, without the need to increase the size of the slot. Not sure how small they go. ex https://www.summitracing.com/parts/m...HBQaAqH88P8HAQ

    Rather than moving the flywheel, id end up moving the pickup, accomplishes the same thing. like stated 1/8th of an inch move of the pick up is right around a 2.4* change in timing.



    Running a 9 plug of the right style (forget the exact model, but stock model in a 9 heat rating - NGK) premium fuel, i literally take a 5 gallon jug to the gas station, fill the truck up with premium so the line is clear of regular (impossible to find a 3 handeled pump around here) then fill up my jug and use that to fill up the grom over the next month or so.

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    You say 9 but there are two types of 9s boss. I run a non-projected tip because of this exact scenario and my aggressive timing curves. Projected tips will
    Act is flame throwers and duplicate this scenario more times than not. CR9E is my current plug in a stock bore setup and many degrees advanced timing. I do watch the plug often and replace it frequently in heavy weather swings here in TX and time my bike accordingly. Colder drier air gets a few degrees retard to keep the piston happy.

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    He said the 9 version of the stock type of NGK plug. That makes it a CPR9, boss.

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    I'm aware. Offered a new plug to try and why as well.

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