How does the shape of the cam lobe affect engine idle?
How far the first valve is open when the 2nd valve begins to open depends on the Cam Lobe Separation. (The shape of the cam lobe also effects this.) A narrow angle will increase cylinder pressure, make an engine idle worse and reduce idle vacuum.
What kind of camshaft profile do I need for Honda CB750?
Below are some camshaft profiles you will enjoy without the headaches that monster cams can produce without background and experience behind you. Here is the problem… With 11 Cycle X Honda CB750 camshafts and more to come, camshaft installation knowledge would be helpful to your machine shop and to the customer knowing what to buy.
How can you tell if you have bad lobe on your camshaft?
First, because there’s no reason not to, and it’s probably easier to access the top of the cam lobes than the valves. Secondly, because engines with VTEC-comparable systems won’t show a flat secondary lobe at the valve when you’re turning the engine over by hand.
How are the lobes of the camshaft arranged?
Camshaft Lobe Separation (in degrees) Camshaft lobes on standard V8’s, like the small block Chevy, are arranged in pairs: One intake lobe, one exhaust lobe. Those pairs of lobes are phased to each other. Cam lobe separation is the angle in degrees between maximum lift of a pair of cam lobes.
How much intake does a Honda CB750 SOHC have?
K intake: 45.5 grams. K exhaust: 41 grams. K oversize 33.5 intake: 49 grams. Do not use OEM stock upper valve spring retainers with higher pressure springs and performance camshafts on 77-78 “F” super sport models. These Kibblewhite valve springs are the most common valve springs used by Honda CB750 SOHC (69-78) owners for years and years.
Can a Honda CB750 camshaft be drop in?
Here is the problem… With 11 Cycle X Honda CB750 camshafts and more to come, camshaft installation knowledge would be helpful to your machine shop and to the customer knowing what to buy. For example: Unless a “drop-in” camshaft is being installed.
Camshaft Lobe Separation (in degrees) Camshaft lobes on standard V8’s, like the small block Chevy, are arranged in pairs: One intake lobe, one exhaust lobe. Those pairs of lobes are phased to each other. Cam lobe separation is the angle in degrees between maximum lift of a pair of cam lobes.
How far the first valve is open when the 2nd valve begins to open depends on the Cam Lobe Separation. (The shape of the cam lobe also effects this.) A narrow angle will increase cylinder pressure, make an engine idle worse and reduce idle vacuum.