what is Rocker Arm Ratio? where to apply it,

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Old Feb 9, 2007 | 03:07 AM
  #1  
salman's Avatar
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Default what is Rocker Arm Ratio? where to apply it,

i adjusted the valve clearence, I found this new thing called rocker arm ratio,
I found that its 1.55:1 but were can i find it in the head, i have search a lot but i couldnt find any pictures showing adjuestment,

If some one can show me the picture where to adjest it in the head, i would be a good help.

thanks
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Old Feb 9, 2007 | 06:35 AM
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lol sorry but are you asking how to adjust rocker arm ratio? Thats solely dependant on the type of rocker your using and isn't adjustable in any way without swapping out for a new rocker.
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Old Feb 9, 2007 | 07:12 AM
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Default Re: (unusual71)

The rocker arm ratio is a function of the geometry of the head and as a result, the rocker. Without major modification, it can't be changed.

It's the distance from the pivot point to the valve head (tip), divided by the distance from the pivot point to the point of contact with the cam lobe.

To be technical, the ratio changes as the cam lobe wipes over the rocker and the ratio quoted is the average.

Wes
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Old Feb 9, 2007 | 10:45 PM
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The manual i have states that the ratio is between 1.25-1.55. I just want to check if its ok if i change it and if it can be done.

The other question is how?. How can i adjust the stock rockers to a higher ratio, say the limit (1.55)

Will i have to put in new ,already adjusted to a higher ratio rockers or can the stock ones be readjusted (taken out and modified) ?
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Old Feb 10, 2007 | 12:04 AM
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Default Re: (salman)

it can not be adjusted.
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Old Feb 10, 2007 | 01:12 AM
  #6  
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Default Re: (njn63)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by njn63 &raquo;</TD></TR><TR><TD CLASS="quote">it can not be adjusted.</TD></TR></TABLE>
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Old Feb 11, 2007 | 12:57 AM
  #7  
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ok, where to adjest rocker clearence,
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