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rocker gear help! 

 

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 Post subject: rocker gear help!
Posted: Sun Dec 10, 2006 10:04 pm 
Stock as a Rock
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Location: Korumburra
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hey guys how much do i have to off the rocker gear to negate the use of shims or minimal shims cheers guys putting new cam in this week
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Posted: Sun Dec 10, 2006 10:29 pm 
Getting Side Ways
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how much is being ground off the base circle?

 

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Posted: Sun Dec 10, 2006 10:33 pm 
Parts Gopher
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wont this make the timing chain lose.

 

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Posted: Sun Dec 10, 2006 10:56 pm 
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The cam runs on the head not the rocker gear so the timing chain wont be affected. As stockstandard asked it all has to do with the base circle diameter, what ever measurment the base circle is reduced from standard you need to halve this and thats the amount to be removed from the bottom of the rocker gear, as an example if the standard base circle is 43mm and the reground base circle is 41mm the amount to be removed from the rocker gear will be 1mm. I havent done this myself but have done a lot of research and understand this to be correct.

 

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 Post subject: sorry guys
Posted: Sun Dec 10, 2006 11:17 pm 
Stock as a Rock
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sorry guys i'll check with my cam grinder custom grind thats all
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Posted: Mon Dec 11, 2006 6:56 pm 
Stock as a Rock
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WagonDad wrote:
The cam runs on the head not the rocker gear so the timing chain wont be affected. As stockstandard asked it all has to do with the base circle diameter, what ever measurment the base circle is reduced from standard you need to halve this and thats the amount to be removed from the bottom of the rocker gear, as an example if the standard base circle is 43mm and the reground base circle is 41mm the amount to be removed from the rocker gear will be 1mm. I havent done this myself but have done a lot of research and understand this to be correct.


0.667mm if rocker ratio is 2:1 ??

 

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