Why did Larios drop valves ?

[jacksonracingcomau]

Brian
I spent a long time measuring and checking before putting mine together, the important part is not which brand springs you use it is setting them at correct height / pressure.
Avoiding coil bind, of course
I also had to grind rockers for clearance and shorten pushrods to fit elephant feet adjusters
new oe. alves are fine imho
infact mine is all std except valve springs and adjusters
just a bit of love in assembly
this one is a hooter, thrashing it mercilessly every day.  no rev limiter on std points ignition
i lit the fuse, any bets on result?
will prob see 10k miles over summer, all on the noise
Then the hot one goes in

[Chuck in Indiana]

Brian
I spent a long time measuring and checking before putting mine together, the important part is not which brand springs you use it is setting them at correct height / pressure.
Avoiding coil bind, of course
I also had to grind rockers for clearance and shorten pushrods to fit elephant feet adjusters
new oe. alves are fine imho
infact mine is all std except valve springs and adjusters
just a bit of love in assembly
this one is a hooter, thrashing it mercilessly every day.  no rev limiter on std points ignition
i lit the fuse, any bets on result?
will prob see 10k miles over summer, all on the noise
Then the hot one goes in

I *love* the character of the Lario engine. That rush to redline is addictive. 
Attaboy, Martin.. hopefully you have it finally sorted.

[IceBlue]

Brian
I spent a long time measuring and checking before putting mine together, the important part is not which brand springs you use it is setting them at correct height / pressure.
Avoiding coil bind, of course
I also had to grind rockers for clearance and shorten pushrods to fit elephant feet adjusters
new oe. alves are fine imho
infact mine is all std except valve springs and adjusters
just a bit of love in assembly
this one is a hooter, thrashing it mercilessly every day.  no rev limiter on std points ignition
i lit the fuse, any bets on result?
will prob see 10k miles over summer, all on the noise
Then the hot one goes in

You may very well be right on all counts.
I'm taking the chance too on two piece standard valves, my list was more in the direction of making it as bullet proof as possible - here I believe one piece valves are safer.
As to the spring, here again you may be right, however, Guzzi's own progressive SB springs has served me VERY well. Also recommende by Guzzi for the 2V heads - the 2V valve train use the same cam shaft as the PT and PX mills, same stems width on the valves etc. Best of all, I haven't seen any cam lobe wear after 18.000 km. So far it's still my choice for the Lario valve train mod., but time will show. As I said the jury is not in yet.

I have hit 9000rpm by accident on mine, but I heard valve float - not healthy, and with the spring I use, it sets in at red line.

Yes Chuck - the takeoff to red line is addictive 
Lots of SB's to choose from, but I almost always end up on the Lario.

Ciao

[jacksonracingcomau]

You may very well be right on all counts.
I'm taking the chance too on two piece standard valves, my list was more in the direction of making it as bullet proof as possible - here I believe one piece valves are safer.
As to the spring, here again you may be right, however, Guzzi's own progressive SB springs has served me VERY well. Also recommende by Guzzi for the 2V heads - the 2V valve train use the same cam shaft as the PT and PX mills, same stems width on the valves etc. Best of all, I haven't seen any cam lobe wear after 18.000 km. So far it's still my choice for the Lario valve train mod., but time will show. As I said the jury is not in yet.

I have hit 9000rpm by accident on mine, but I heard valve float - not healthy, and with the spring I use, it sets in at red line.

Yes Chuck - the takeoff to red line is addictive 
Lots of SB's to choose from, but I almost always end up on the Lario.

Ciao

from my experience measuring 3 motors the installed height is crucial to measure
you may only have one valve bouncing
heads I had that were supposedly fixed varied hugely, pot luck if springs alone are enough

good that cam still measures true, my check is just measure lift at pushrod , no need to take apart until wear shows on dial gauge 


only bad thing mine does is tingle at bars will balance crank on next, bbut not a biggie


btw new oe ex valves are ss
inlet still 2 piece but no concern imho