Both the 1.5 roller tip and 1.5 ratio full roller were power LOSSES over the stamp steel. This is probably due to the weight differences. The 1.6 full roller was only a difference of 2.7 ft/lb torque @ 5100 rpm. I just can't justify spending $700 for less than 3 hp.
Yeah, my rocker shafts were on wrong. This lead to some oiling issues, which lead to my exhaust valves sticking. Looks like the back of my engine was still getting oil which explains why 6 bent instead of all 8.
I don't really want to watch the video, but I'm not impressed with most of what those guys do.
Just to save me the pain of watching it...did they correct the geometry when they changed rockers? If not, that's where the power went. I can't think of a single reason why a stamped rocker would make more power than a good, quality rocker arm.
The other issue is slow ramps and low spring loads will show lower power gains with roller rockers that a fast ramp lobe.
Also, rocker arm weight is essentially a non factor when lift is low, spring loads are low and RPM is under 7500 or so, depending on the rocker system.
