Any interest in cams?

[Ulvetanna_imp]

I am really curious about the whole "closing the exhaust valve 10 degrees later" thing... levitating with anticipation for some enlightenment

Mate, if you can levitate, what do you need a bike for?

Mate, if you can levitate, what do you need a bike for? Moreover, why would he need enlightenment? Anyone can levitate must already be there!

I have a contact that works for a cam company and I put out a feeler to see if they are able or willing to do anything for us.

Keep us posted.

I believe the quoted price is high because to put the intake timing in phase requires more lobe work.

By the way, the timing for the 1982 CB1100F is INT: 15(BTDC), 35(ABDC), and EX: 40(BBDC), 10(ATDC).

Keep us posted.

I believe the quoted price is high because to put the intake timing in phase requires more lobe work.

By the way, the timing for the 1982 CB1100F is INT: 15(BTDC), 35(ABDC), and EX: 40(BBDC), 10(ATDC). All that stuff has to be analyzed in conjunction with:

-Mass of the piston, rod, crankshaft, valves and springs
-Piston speed and inertia
-Bore and stroke
-ignition timing
-brake mean effective pressures
-heat dissipation

It ain't simple so without some very good software and a very good engineer it could be quite dicey. Higher lift/duration very often requires lighter valves and/or stronger springs. Then you get into the whole valve seat material issue, how the valves are ground, all that.

Mine's fast enough. In fact I've noticed in the cool weather it really runs a lot stronger. That's an air-cooled, computer-controlled engine for you. Automatically changes the ignition timing based on OAT and air density.