Why does my Harley Davidson make a lot of noise?
Big cams with a lot of lift will make more power, but they also make more noise…….. I use ear plugs when I ride my bike with the hopped up motor, on my stock bike I don’t need ear plugs at all. When the aluminum plate heats up it expands more than the shaft and Rocker arm so even if the shaft is tight cold it can loosen up hot.
Why are my pushrods making so much noise?
Larger cams mean more left and faster valve spring unloading, which causes more valve train noise. Where are your pushrods set at now? SE’s directions are for a .0100″ setting.
Why does my bike make a weird noise when I roll it?
This may be an issue when taking a bike out of storage, so checking for brake caliper sticking by rolling the bike by hand and applying the brakes to check for it is a good idea. In some instances, though, certain brake pads may emit that type of sound due to high humidity or moisture on the pads.
Why do I hear a noise at the rocker box?
Just because you hear the noise at the rocker box, doesn’t mean its due to something in the rocker box. From the factory, pushrods are set at .0100″ in the tappet bore. Most builder set adjustable pushrods .0140-.0150 in the bore. Larger cams mean more left and faster valve spring unloading, which causes more valve train noise.
What causes lifter failure?
Debris is the number one cause of roller lifter failure. Since they rely on oil flowing through tiny passages, pieces of debris can hurt lifter operation. Clogged passages can stop the lifter from pumping up and cause excessive noise. The increased play in the valve train hinders valve motion.
What causes bent push rod?
The cause of the bent push rod is the valve guide thimble is only press fitted, and easily loosens when the engine reaches a certain temp. The thimble then pushes outward, restricting the movement of the valve spring, eventually causing the push rod to bend.
Why do push rods bend?
The pushrod is the weakest link in the valve trane. pushrods will bend if. 1. You have coil bind.