#rocker arm

[shamelessbouquetfoxfan]

4 Symptoms of a Bad Rocker Arm

A bad rocker arm can be caused by many things including poor technique or even injury. Read on to see what to do if you have one!

[shriraminternational-blog]

Rocker Arm Shaft Manufacturer & Suppliers

Rocker Arm is a critical component of valve train which transfers the motion to Inlet and Exhaust Valves. Forged / Investment – Lost Wax Cast, with required Tensile strength, CNC Machined Rocker Arms with the required hardness are offered by us. We supply Rocker Arms with Rocker Bush, Screw and Nut.

[rockerarmsmanufacturer]

rocker arm manufacturer  www.cdsunyu.cn www.best-engineparts.com  janejiangATcdsunyu.cn, wechat/whatsapp [phone]

[ipower-machinery]

Rocker arm

-From Wikipedia 

-Overview

A rocker arm (in the context of an internal combustion engine of automotive, marine, motorcycle and reciprocating aviation types) is an oscillating lever that conveys radial movement from the cam lobe into linear movement at the poppet valve to open it. One end is raised and lowered by a rotating lobe of the camshaft (either directly or via a tappet (lifter) and pushrod) while the other end acts on the valve stem. When the camshaft lobe raises the outside of the arm, the inside presses down on the valve stem, opening the valve. When the outside of the arm is permitted to return due to the camshafts rotation, the inside rises, allowing the valve spring to close the valve. 

Some overhead cam engines employ short rocker arms in which the cam lobe pushes down (rather than up) on the rocker arm to open the valve. On this type of rocker arm, the fulcrum is at the end rather than the middle, while the cam acts on the middle of the arm. The opposite end opens the valve. These types of rocker arms are particularly common on dual overhead cam motors, and are often used instead of direct tappets. 

-Material

For car engines the rocker arms are generally steel stampings, providing a reasonable balance of strength, weight and economical cost. Because the rocker arms are, in part, reciprocating weight, excessive mass especially at the lever ends limits the engine's ability to reach high operating speeds. For this reason, aluminum is often used for high performance, aftermarket rocker arms for pushrod engines as well as many OEM rocker arms on OHC engines. Aluminum rockers on OHC engines often have a steel pad or roller where the cam contacts the rocker arm in order to reduce wear. Truck engines (mostly diesel) use stronger and stiffer rocker arms made of cast iron (usually ductile), or forged carbon steel. We can supply high efficiency manufacturing facility/machine/equipment with professional technology to your casting iron/steel parts of rocker arm production line, which can help you to produce a ball valve product with better quality and competitive price.Welcome inquiry.

E-mail: [email protected]

Website: http://www.ipowermachinery.com/

Video Link: https://youtu.be/pyM4Rasxcmk

[hariesautomoto]

Valves by HariesAutoMoto

[ridertua]

Rocker Arm & Offset cylinder Yamaha dan Honda... Duluan Honda tapi Siapa Punya Hak Patent...????

Rocker Arm & Offset cylinder Yamaha dan Honda… Duluan Honda tapi Siapa Punya Hak Patent…????

Pertama kali Honda  pakai Roller Rocker Arm pada Honda Kharisma sedangkan Yamaha dipakai pada Jupiter MX, dimana tujuannya adalah sama yaitu mengurangi gesekan (Low Friction) dan  memaksimalkan tenaga dari mesin ujung-ujungnya… Dipatenkan oleh Noriyuki Miyamura & Shuji Nagano ( Mitsubishi Jidosha Kogyo Kabushiki Kaisha) Bagaimana dengan Offset cylinder…? (more…)

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[69-chevy-blazer]

Tick, Knock or Pop?

Trying to track down this noise on the passenger side.  Wasn't there before rebuilding the heads.  I definitely had a small leak at the exhaust manifold to header.  Used a shop vac and incense cone to track down the leak. I tightened the manifold up quite a bit and it seemed to reduce the "popping"...but the tick/knock is still there.  I'm really hoping a little adjustment to the rocker arms will take care of it. If not, I'm in over my head again. Will tackle re-seating the exhaust manifold after that.

Despite the threat of a worn lobe on the cam, I drove the damn thing down the road to fill up at the only remote station I know of that carries 93.  It was a short but gratifying drive.  Can't wait to ditch the roof!  Oh, right - after I get this tick/knock figured out.