Description
A valvetrain is the mechanical system that controls and regulates the operation of the valves in an internal combustion engine.
Layouts
A typical overhead valve engine valvetrain is made up of valves, rocker arms, pushrods, lifters, and camshafts. There are several different configurations for valvetrains, their differences lying in the location of the camshaft within the engine.
Cam-in-block
The camshaft is located within the engine block, and operates directly on the valves, or indirectly via rocker arms and pushrods. These are sometimes called pushrod engines because of their reliance on pushrods.
Overhead camshaft
The camshaft is located above the valves within the cylinder head and operates directly or indirectly upon the valves. The Rolls Royce Merlin, used on the British Spitfire and P-51 Mustang during World War 2, is an example of an overhead camshaft engine.
Camless
In a camless layout, the engine has no camshafts. Instead, the valves are individually actuated by technologies like solenoids, hydraulics, or pneumatics. However, camless engines are not yet available in mass production, as they have a variety of technical issues including weight, cost, and high noise.
At Aerospace Aces, owned and operated by ASAP Semiconductor, we sell engine valvetrain parts and systems from some of the top manufacturers around the world, including Lycoming, Superior Air Parts, and Continental Motors Inc.
Part No | Manufacturer | Description | RFQ |
---|---|---|---|
AEC24047 | Engine Components International | Guide - Exhaust | RFQ |
AEL19034 | Engine Components International | Valve, Exhaust | RFQ |
35971 | Continental Motors Inc | Retainer - Valve Spring Outer | RFQ |
SA627731 | Superior Air Parts | Valve Key - SA627731 | RFQ |
AEC652112 | Engine Components International | Roto Coil Assembly - 470/520/550 Series | RFQ |
SA631496 P10 | Superior Air Parts | Guide | RFQ |
SL15F19957-28 | Superior Air Parts | Push Rod | RFQ |
636242P010 | Continental Motors Inc | Guide - Exhaust | RFQ |
AEC643767HCP030 | Engine Components International | Guide - Exhaust Valve | RFQ |
62388 | Lycoming | Cap -Valve Stem | RFQ |
631814 | Continental Motors Inc | Cover - Valve Rocker | RFQ |
SA630591 P20 | Superior Air Parts | Seat - Valve | RFQ |
60009 | Lycoming | Key - Valve - Intake | RFQ |
SA636242 P20 | Superior Air Parts | Guide Exhaust | RFQ |
643766P030 | Continental Motors Inc | Guide - Intake, Plus .030 | RFQ |
SA24026 | Superior Air Parts | Valve Spring Retainer | RFQ |
655166P005 | Lycoming | Guide, Valve | RFQ |
625958 | Continental Motors Inc | Spring Valve - Outer | RFQ |
SA639282 | Superior Air Parts | Guide - Exhaust | RFQ |
656642 | Continental Motors Inc | Valve - Rocker Shaft | RFQ |
SL13622 | Superior Air Parts | Valve | RFQ |
SA10205-1 P05 | Superior Air Parts | Guide - SA10205-1 P10 | RFQ |
655525P010 | Continental Motors Inc | Guide - Intake Valve | RFQ |
655968 | Continental Motors Inc | Valve - Intake | RFQ |
LW-15315 | Lycoming | Rod Assembly-Push | RFQ |
17B23936 | Lycoming | Valve - Exhaust | RFQ |
AEC636242HCP010 | Engine Components International | Guide - Exhaust - High Chrome | RFQ |
SA35967 P10 | Superior Air Parts | Seat - Valve - SA35967 P10 | RFQ |
655527P010 | Continental Motors Inc | Guide - Intake Valve | RFQ |
MS35756-6 | Superior Air Parts | Key | RFQ |
AEL73435 | Engine Components International | Push Rod Assembly | RFQ |
634150 | Continental Motors Inc | Spring | RFQ |
655972 | Continental Motors Inc | Valve - Exhaust | RFQ |
SA643766-1 | Superior Air Parts | Guide - Intake | RFQ |
SL73806 | Superior Air Parts | Push Rod | RFQ |
636242P015 | Continental Motors Inc | Guide - Exhaust | RFQ |
LW-13790 | Lycoming | Shaft - Valve Rocker | RFQ |
SA24029 | Superior Air Parts | Spring Valve - Inner | RFQ |
SL10077 | Superior Air Parts | Valve Spring Seat | RFQ |
655868 | Continental Motors Inc | Valve - Intake | RFQ |
SA631991 | Superior Air Parts | Shaft - Valve Rocker | RFQ |
72050 | Lycoming | Key - Valve - Intake - 72050 | RFQ |
SA630591 | Superior Air Parts | Seat - Valve | RFQ |
LW-15407 | Lycoming | Seat - Valve Rocker Arm | RFQ |
AEL61681P010 | Engine Components International | Guide - Intake, Plus .010 - AEL61681P010 | RFQ |
AEC643766 | Engine Components International | Guide - Intake | RFQ |
SA40762 | Superior Air Parts | Valve Rocker Cover for O-200 and O-300 for Continental | RFQ |
SA642318 P05 | Superior Air Parts | Seat - Valve | RFQ |
SA643766-1 P20 | Superior Air Parts | Guide | RFQ |
631638 | Continental Motors Inc | Valve | RFQ |
SA21153 | Superior Air Parts | Shaft - Rocker O-200 Series | RFQ |
SL73806NS | Superior Air Parts | Rush Rod - SL73806NS | RFQ |
SL15F19957-14 | Superior Air Parts | Push Rod Assembly | RFQ |
SL75838A P30 | Superior Air Parts | Guide Exhaust - Not Pre-Reamed | RFQ |
SL69532 | Superior Air Parts | Valve Spring Seat - SL69532 | RFQ |
MS35756-3 | Continental Motors Inc | Key | RFQ |
SL66713A P30 | Superior Air Parts | Guide Intake | RFQ |
SA637837 | Superior Air Parts | Spring Valve - Outer | RFQ |
SL19001A | Superior Air Parts | Valve - Exhaust | RFQ |
SL72057A P30 | Superior Air Parts | Seat - Valve | RFQ |
AEL14995 | Engine Components International | Spring - Push Rod Shroud | RFQ |
16R21710-P20 | Lycoming | Guide - Valve - Exhaust (NI-Resist) | RFQ |
AEL72057P020 | Engine Components International | Seat - Intake, Plus .020 | RFQ |
655526P010 | Continental Motors Inc | Guide - Exhaust Valve | RFQ |
SL61681A P05 | Superior Air Parts | Guide Intake, Plus .005 - SL61681A P05 | RFQ |
AEL60337P010 | Engine Components International | Seat - Exhaust, Plus .010 | RFQ |
SL11901 | Superior Air Parts | Valve | RFQ |
LW-16740 | Lycoming | Valve - Exhaust - (Rotor Type) | RFQ |
655970 | Continental Motors Inc | Valve - Intake | RFQ |
SL15330 | Superior Air Parts | Valve Cover | RFQ |
65441 | Lycoming | Seat - Valve Spring - Lower Intake - 65441 | RFQ |
SL61247 | Superior Air Parts | Cover - Rocker Box | RFQ |
15F19957-48 | Lycoming | Push Rod Assembly | RFQ |
SL72057A P05 | Superior Air Parts | Seat - Valve | RFQ |
SL73129 | Superior Air Parts | Valve | RFQ |
24029 | Continental Motors Inc | Spring Valve - Inner | RFQ |
AEL72050 | Engine Components International | Key, Valve Spring Retainer For Lycoming Angle Head Cylinders | RFQ |
65007 | Lycoming | Retainer-Shroud Tube Seal | RFQ |
AEC21284P005 | Engine Components International | Shroud - Push Rod | RFQ |
SA642318 P30 | Superior Air Parts | Seat - Valve | RFQ |
537870 | Continental Motors Inc | Push Rod | RFQ |
AEL11795 | Engine Components International | Spring Valve | RFQ |
AEL72058P010 | Engine Components International | Seat - Exhaust, Plus .010 | RFQ |
AEC643767P05 | Engine Components International | Guide - Exhaust, Plus .005 | RFQ |
AEC643766P040 | Engine Components International | Guide - Intake, Plus .040 | RFQ |
655526P005 | Continental Motors Inc | Guide - Exhaust Valve | RFQ |
SA625615BLK | Superior Air Parts | Valve Cover Black | RFQ |
SL72058A P20 | Superior Air Parts | Seat - Valve | RFQ |
AEC643767HC | Engine Components International | Guide -á Exhaust High Chrome | RFQ |
AEC539988 | Engine Components International | Valve - Intake | RFQ |
We Hope You'll Choose Us as Your Parts Distributor In the Future. Don’t forget That We offer Competitive Quotes and Same-Day Shipping On Most of Our Inventory.
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