Not knowing a whole lot about rockers...
From what I can tell the rocker ratio should be something like the
ratio of the lengths of each side of the center of rotation; that is,
if the distance from the point of contact with the pushrod is 1 inch
from the center of the pivot, the point of contact with the valve "stem"
is 1.6 inches from the pivot (on a 1.6 rocker).
If the above statement is correct, then couldn't any yahoo with a
micrometer or other measuring device determine the ratio of the a rocker
he's holding in his hand?
John Neff wrote:
> This is a post from the Ram truck mailing list.
>
> Hmmm....... this is sure to scare up some discussion.
>
> John
> http://jndneff.home.texas.net/dakota/dakota.html
>
>
>
>>Remember the posts where Ram/Dakota owners complained that the
>
> installation of
>
>>1.7 ratio roller rocker sets didn't seem to give them any horsepower gain?
>>
>>Here's a post where a fairly well known western USA small block mopar
>
> engine
>
>>builder claims he actually measured the ratio of the stock Magnum engine
>>'plain jane' rocker arms and found them to be 1.74 ratio instead of the
>>'advertised' spec of 1.60 ratio.
>>
>>Maybe that explains why no measureable gains where seen when the
>
> aftermarket
>
>>1.70 ratio rollers were installed?
>>
>>http://www.moparts.org/ubb/Forum1/HTML/022827.html
>
>
>
-- -andy andylevy@yahoo.com Maintainer, DML FAQ - http://www.dakota-truck.net/faq/ http://home.twcny.rr.com/andylevy/dakota/ '99 CC 4x4 318 auto
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:05:04 EDT