30 degree valves
30 degree valves
(OP)
Hi all,
I have an old Italian motor bike with 30° valves.
I always wondered why they did this(The Alfas have them as well)
Is there any advantage? Or is it an adaptation for quick setting the valve/seat combination?
Thanks,
Dirk/Antwerp
I have an old Italian motor bike with 30° valves.
I always wondered why they did this(The Alfas have them as well)
Is there any advantage? Or is it an adaptation for quick setting the valve/seat combination?
Thanks,
Dirk/Antwerp





RE: 30 degree valves
30 deg valve/seat angles are often used on lower speed engines (such as diesels) though not exclusively, with moderate cam events, where the superior low lift flow (over a 45* seat) can improve torque.
I don't know of any quicker seating benefits , that I assume you're alluding to.
"It's not always a case of learning more, but often of forgetting less"
RE: 30 degree valves
Franz
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RE: 30 degree valves
As I have to renew the seats and valves anyway,I think to revert to 45 °
Dirk
RE: 30 degree valves
RE: 30 degree valves