C10 Update: Knowledge Learned
I continue to acquire knowledge by way of the C10 project.
They say that knowledge is power; I say....it ain't cheap !
The aftermarket heads I am using have the intake and exhaust ports relocated a touch for bigger valves.
This caused the rocker arms to splay as they span from the pushrods to the valves.
Ordinarily not a big deal.
But.............
The roller rocker arms I had were nice USA manufactured full rollers.
They were aluminum and vert pretty, but they were very rectangular in shape.
Due to the aforementioned splay, the pushrod ends of the rockers formed an inverted chevron (very shallow angle "V" Boobot...)
This placed the outer corners of each pair very close to the walls of the valve covers, touching,even!
Not good.
The rocker arms were not of the "self aligning" variety, and I needed to use pushrod guide plates.
Unfortunately, the c 10 c for the pushrods was insufficient to provide proper rocker arm to valve stem contact.
So, options were these:
Get adjustable guide plates or self aligning rocker arms.
I opted for the latter.
so I got arms shaped like these:
That would alleviate the interference with the valve covers.
THEN, I discovered another fly in the ointment:
the screw in rocker arm studs provided me by the machine shop were badly eccentric!
I noticed the upper stud wobble when screwing them in,
Placing a straight edge down the row of installed studs revealed out of line studs by as much as .025" !!
Also, not good.
So I purchased a set of higher quality studs and took care of THAT problem.
Now I move on to the "art" of checking for the proper pushrod length......
Too long or short will cause the rocker roller to valve stem to be off center, again, not good.
I am awaiting arrival of a tool to check that.
HOPEFULLY I won't need some different pushrods.
BUT, if this goes the way the rest of the project has cone...............mo' parts,mo' money and mo' tome!
