twincam valve springs question

[fxdl03]

Me and my friend have same 117 builds only difference was valve springs I used avv behive springs in my heads .He had woods double springs in his heads same cams same lifters pushrods adjusted same preload 3 turns 3 flats on se push rods which is around .130 ish his valve train seems quieter  on spark plug side than mine when idling and running down road .I know valve train harmonics are different from time to time but can different springs make that much difference in noise? .THey both have roller rockers and rocker lockers.

[itsafatboy]

So on your friends what springs did he use the woods 160? and do you now the seat pressure on your springs?

what cams you guys using woods?

on mine it was how the exhaust valve hit the seat , when I switched heads same woods springs, same woods cam, noise was gone, my noise was from the front exhaust valve area , woods uses pretty fast closing ramp speed on cams.     

[jsachs1]

Did you clearance the rocker box COVERS for the roller rocker arms?
John

[Don D]

I know valve train harmonics are different from time to time but can different springs make that much difference in noise?

Yes by all means. The cams are the same?

[tc1550]

yes same cams bike runs fine no issues but my bike plug side is just plain louder valves pounding seats .

[Don D]

How much was milled off the heads? What pushrods?

[838]

I noticed a (very slight) change in sound on my 117 when I switched to synthetic oil. Are you both running the same oil?