Originally Posted By: Jarlaxle
Originally Posted By: ARCOgraphite
Originally Posted By: sunruh
Originally Posted By: rubberchicken
Most bikes are shims over buckets.
try shim UNDER bucket
That"s too heavy for big HP - NO tappets NO buckets on rocket bikes. Just tiny rocker cam followers (finger followers) acting on the valves. I bet if its got a redline over 9000rpm its got that valvetrain. At least that's the way it was in the late 80's
Here a GIXER head ( 750 I think):
One more time: Honda got 10,500RPM out of HYDRAULIC lifters more than 30 years ago! (And note: the valvetrain wasn't the limiting factor!)
The OP was about modern motorcycles. The vast majority of modern motorcycles feature neither hydraulic nor roller valvetrains, with exceptions being made for some designs that were not created with performance as a paramount objective.
Originally Posted By: ARCOgraphite
Originally Posted By: sunruh
Originally Posted By: rubberchicken
Most bikes are shims over buckets.
try shim UNDER bucket
That"s too heavy for big HP - NO tappets NO buckets on rocket bikes. Just tiny rocker cam followers (finger followers) acting on the valves. I bet if its got a redline over 9000rpm its got that valvetrain. At least that's the way it was in the late 80's
Here a GIXER head ( 750 I think):
One more time: Honda got 10,500RPM out of HYDRAULIC lifters more than 30 years ago! (And note: the valvetrain wasn't the limiting factor!)
The OP was about modern motorcycles. The vast majority of modern motorcycles feature neither hydraulic nor roller valvetrains, with exceptions being made for some designs that were not created with performance as a paramount objective.
