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azazel scratch

External


Since: Jan 15, 2006
Posts: 20



(Msg. 1) Posted: Mon Jun 09, 2008 10:50 am
Post subject: Rocker Arm Ratio
Archived from groups: alt>autos>ford (more info?)
I came across this term while looking through my engine specifications. The
Rocker Arm Ratio is given as 1:52 : 1. What is it? The amount of travel?

Thanks in advance

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Big Al

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Since: Jun 09, 2008
Posts: 62



(Msg. 2) Posted: Mon Jun 09, 2008 2:18 pm
Post subject: Re: Rocker Arm Ratio [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"azazel scratch" <warlock DeleteThis @ispwest.com> wrote in message
news:g2jqhj0dpv@enews2.newsguy.com...
>I came across this term while looking through my engine specifications.
>The Rocker Arm Ratio is given as 1:52 : 1. What is it? The amount of
>travel?
>
> Thanks in advance
>

It's the ratio between the travel of the pushrod to the travel of the valve.
At 1.5 to 1 the pushrod would move 1/2 inch to move the valve 3/4 of an
inch.

Al

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Big Al

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Since: Jun 09, 2008
Posts: 62



(Msg. 3) Posted: Mon Jun 09, 2008 2:23 pm
Post subject: Re: Rocker Arm Ratio [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"azazel scratch" <warlock.TakeThisOut@ispwest.com> wrote in message
news:g2jqhj0dpv@enews2.newsguy.com...
>I came across this term while looking through my engine specifications.
>The Rocker Arm Ratio is given as 1:52 : 1. What is it? The amount of
>travel?
>
> Thanks in advance
>

The rocker arm ratio is the difference between the pushrod travel to the
valve travel. So if the cam "lifts" the pushrod .5", the valve will open .76
inch.

Al
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