looks right to me.
Some here had mispelled his last name but that is his location and correct phone number from what I recall.
Some here had mispelled his last name but that is his location and correct phone number from what I recall.
Hi Totenkokopf...................quite by accident I found Crane cams new reference about bigger ratio rockers and how standard rockers give a slight bump in performance coming off the base circle when compared to larger ratio rockers.......but that larger ratio rockers have been proven to give the correct lifts at the valve when comparing valve train geometry.Totenkopf said:looks right to me.
Some here had mispelled his last name but that is his location and correct phone number from what I recall.
Hello Ozzie,Ozzie In Arabia said:Hi Totenkokopf...................quite by accident I found Crane cams new reference about bigger ratio rockers and how standard rockers give a slight bump in performance coming off the base circle when compared to larger ratio rockers.......but that larger ratio rockers have been proven to give the correct lifts at the valve when comparing valve train geometry.
They did not show significant improvements in performance other than Ibelieve they would improve throttle response.
And it is DAN BAISLEY
All the best, Ozzie
Yes I believe that port shape gives impressive gains and also chamber shape in burn rates and VE.Totenkopf said:The rocker ratio change by itself is a subtle improvement. A little more lift, a little more valve open duration. I was after more upper end performance without losing the bottom end gains. So, combined with the cam key reversal and the reworked throttle body/intake, I'm getting the changes I was after.
With regard to the intake port diameter, Otto was just showing me yesterday on some S&S SA heads for his next race engine that it's not just diameter but shape of the port. I'm not sure how the desktop dyno can account for shape differences.
Thanks for the link JMS!JMS said: