does anyone know the rocker arm ratio on a d motor? also has anyone tried different ratios ?????

 

I have been thinking about this a lot lately. Want to do some roller rockers and change the ratio as well.
My issue is maintaining the connection with the tip of the valve, while keeping the same cam timing.
Dunno, move the pivot point toward the cam slightly. Picking up a test head soon. Will post the results...
Any input is welcome..

 

what kinda of rocker arms are you going to use
?

oem or aftermarket and if oem from what head and how do you plan on putting it together?

 

was gonna design my own set and get them machined. The only OEM roller rockers are in the VTEC-e engines. Different head design from what I understand...

 

have you gotten any designs started yet??? it is a interesting subject and i would like to find out more on what you were thinking of

 

Haven't put a whole lot of thought into it. I was flipping through some old mags and saw a set advertised for Toyotas.
On the SOHC, the pivot bar for the rockers is mounted to the end cap for the cam. May have to modify or fabricate a new end cap to mount the bar closer to the cam. And then get going on the rockers. Once that is taken car of, the rockers should be fairly easy, although a little expensive.
Could be a 10hp upgrade considering the extra lift on the valves and removing friction with the rollers. If particular attention is paid to the balancing of the rockers, a higher redline should be very attainable with stock springs.
And all we have to do is a total redesign of a Honda head. How hard can it be?