Why does my Sportster leak oil?
When the housing loads up with too much oil, droplets form which will fall downward when the bike is still or spray backwards if it’s in motion. If you see a Harley piddling oil from the air cleaner — even a modern one — that’s what they’re engineered to do.
Do overhead cam engines have pushrods?
The motion of the camshaft is transferred using pushrods and rocker arms to operate the valves at the top of the engine. An overhead camshaft (OHC) engine also has overhead valves; however, to avoid confusion, Overhead valve engines that use pushrods are often called “pushrod engines”.
What do push rod tubes do?
I think you mean push ROD tubes. On engines that have the camshaft below the cylinder head the camshaft lobes cannot act directly onto the valves to move them so long rods carry the movement up past the cylinder to the head where they can use a rocking arm to move the valves.
What is a pushrod on a motorcycle?
You can imagine motorcycles with a classic look and a low revving engine with massive torque, that’s the work of a Pushrod engine. In a Pushrod or OHV type engine the Camshaft is placed in the center which is connected to the rocker arm via a Pushrod, and the rocker arm pushes or lifts the valve.
Do Harleys have pushrods?
Current Harley engines use the pushrods to move a pair of rocket arm shafts, one to open the two intake valves and the other opening the two exhaust valves. The engine in the patent images also has four valves per cylinder, but instead of rocker arm shafts, the pushrods each open a single rocker arm.
How does a Harley Davidson push rod work?
The new engine design has the two pushrods each directly moving a single rocker arm, one for the two intake valves and the other for the exhaust valves. When a pushrod moves up, the rocker arm pushes down on a valve bridge that pushes the two valves down at the same time.
What year did Harley stop leaking oil?
The idea that Harleys are big, noisy, oil-leaking bikes is old, and many now take it as the gospel truth. Harley-Davidson stopped using automatic chain oilers in 1964, and all lubrication had to be done by hand.
Why do Shovelheads leak oil?
Oil leaks, or the “Shovelhead Drip,” have been plaguing Shovelhead owners for decades. The culprits can include worn head gaskets, the valve cover on top of the engine or the oil pump. According to Shovelhead USa, both the primary and chain oilers can be plugged without harming the motorcycle.
Why is a Shovelhead called a Shovelhead?
The engine gained the nickname “Shovelhead” due to the look of the rocker heads having the appearance of an old coal shovel that was flipped upside down, giving the appearance of a shovel.
Are Shovelheads reliable?
If you follow the specs in the book and use good quality parts and have your machine work done properly, the Shovelhead is as reliable as any other motorcycle, Otherwise, it will leave you by the side of the road every time.