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 |
---|---|---|---|
655972 | Continental Motors Inc | Valve - Exhaust | RFQ |
SL16699 P05 | Superior Air Parts | Seat - Valve | RFQ |
SA65170 | Superior Air Parts | Seat - Valve | RFQ |
SL61681A P20 | Superior Air Parts | Guide Intake - SL61681A P20 | RFQ |
AEL14995 | Engine Components International | Spring - Push Rod Shroud | RFQ |
SL15F19957-57 | Superior Air Parts | Push Rod | RFQ |
SA643766-1 P20 | Superior Air Parts | Guide | RFQ |
SL61681A | Superior Air Parts | Guide Intake - SL61681A | RFQ |
643767P020 | Continental Motors Inc | Guide - Exhaust Valve | RFQ |
SA40762 | Superior Air Parts | Valve Rocker Cover for O-200 and O-300 for Continental | RFQ |
SA65160 | Superior Air Parts | Valve | RFQ |
AEC643766 | Engine Components International | Guide - Intake | RFQ |
AEL13323 | Engine Components International | Retainer - Lower Valve Spring | RFQ |
SL66713A P20 | Superior Air Parts | Guide Intake | RFQ |
AEC643767HCP030 | Engine Components International | Guide - Exhaust Valve | RFQ |
SL15F19957-13 | Superior Air Parts | Push Rod (320 engine) | RFQ |
SL15F19957-36 | Superior Air Parts | Push Rod (360 engine) | RFQ |
SA630591 P20 | Superior Air Parts | Seat - Valve | RFQ |
658259 | Continental Motors Inc | Continental Valve Cover - 658259 | RFQ |
AEL19001 | Engine Components International | Valve - Exhaust (Rotor Type) - AEL19001 | RFQ |
SA639282 P10 | Superior Air Parts | Guide - Exhaust | RFQ |
537870P030 | Continental Motors Inc | Push Rod | RFQ |
MS35756-8 | Superior Air Parts | Key | RFQ |
SL16740A | Superior Air Parts | Valve - Exhaust | RFQ |
SA2106 P10 | Superior Air Parts | Seat - Valve | RFQ |
631814 | Continental Motors Inc | Cover - Valve Rocker | RFQ |
SA630591 | Superior Air Parts | Seat - Valve | RFQ |
SA643766-1 P05 | Superior Air Parts | Guide | RFQ |
SL75838A P30 | Superior Air Parts | Guide Exhaust - Not Pre-Reamed | RFQ |
AEC537296 | Engine Components International | Shroud - Push Rod | RFQ |
SL19034 | Superior Air Parts | Valve, Exhaust | RFQ |
537296 | Continental Motors Inc | Push Rod Housing | RFQ |
15F19957-32 | Lycoming | Push Rod Assy | RFQ |
SL72058A P05 | Superior Air Parts | Seat - Valve | RFQ |
AEC643767HC | Engine Components International | Guide -á Exhaust High Chrome | RFQ |
SA532129 | Superior Air Parts | Valve | RFQ |
SL72058A P10 | Superior Air Parts | Seat - Valve | RFQ |
655867 | Continental Motors Inc | Valve - Intake | RFQ |
SL12688 P10 | Superior Air Parts | Seat - Valve | RFQ |
SL11626 P05 | Superior Air Parts | Guide - Exhaust - SL11626 P05 | RFQ |
SA635959 P05 | Superior Air Parts | Seat - Valve | RFQ |
SA35967 | Superior Air Parts | Seat - Valve- SA35967 | RFQ |
SA536410 | Superior Air Parts | Seal - Housing Push-Rod | RFQ |
LW-16740 | Lycoming | Valve - Exhaust - (Rotor Type) | RFQ |
655166P005 | Lycoming | Guide, Valve | RFQ |
AEC637837 | Engine Components International | Spring Valve - Outer | RFQ |
AEL61681P005 | Engine Components International | Guide - Intake, Plus .005 - AEL61681P005 | RFQ |
SA35967 P20 | Superior Air Parts | Seat - Valve - SA35967 P20 | RFQ |
SL61247 | Superior Air Parts | Cover - Rocker Box | RFQ |
SL11626 | Superior Air Parts | Guide - Exhaust - SL11626 | RFQ |
SL66713A P10 | Superior Air Parts | Guide Intake | RFQ |
SA646460 | Superior Air Parts | Valve - Exhaust | RFQ |
SA21361 | Superior Air Parts | Valve Key - SA21361 | RFQ |
72050 | Lycoming | Key - Valve - Intake - 72050 | RFQ |
SA654441 | Superior Air Parts | Spring Valve - Outer | RFQ |
SL12688 P20 | Superior Air Parts | Seat - Valve | RFQ |
SA631496 P10 | Superior Air Parts | Guide | RFQ |
SL15F19957-12 | Superior Air Parts | Push Rod Assembly | RFQ |
LW-11797 | Lycoming | Spring Valve - Inner | RFQ |
61681-P10 | Lycoming | Guide - Intake, Plus .010 - 61681-P10 | RFQ |
75838-P10 | Lycoming | Guide - Valve - Exhaust | RFQ |
SA636242 P05 | Superior Air Parts | Guide Exhaust | RFQ |
SA625393 | Superior Air Parts | Valve Spring Retainer | RFQ |
655771 | Continental Motors Inc | Valve - Exhaust | RFQ |
LW-11796 | Lycoming | Spring Valve - Outer | RFQ |
SL68987 | Superior Air Parts | Tube - Push Rod Shroud | RFQ |
AEL72058P020 | Engine Components International | Seat - Exhaust, Plus .020 | RFQ |
SA637837 | Superior Air Parts | Spring Valve - Outer | RFQ |
SL12688 P30 | Superior Air Parts | Seat - Valve | RFQ |
AEL11485 | Engine Components International | Shroud - Pushrod | RFQ |
MS35756-6 | Superior Air Parts | Key | RFQ |
LW-15315 | Lycoming | Rod Assembly-Push | RFQ |
SL11795 | Superior Air Parts | Spring Valve | RFQ |
SA10204 | Superior Air Parts | Valve, Exhaust | RFQ |
SL11626 P30 | Superior Air Parts | Guide - Exhaust - SL11626 P30 | RFQ |
655525P010 | Continental Motors Inc | Guide - Intake Valve | RFQ |
AEL72057P020 | Engine Components International | Seat - Intake, Plus .020 | RFQ |
AEL11626HCP020 | Engine Components International | Guide - Exhaust - High Chrome, Plus .020 | RFQ |
SA10205-1 P30 | Superior Air Parts | Guide - SA10205-1 P30 | RFQ |
SA630591 P10 | Superior Air Parts | Seat - Valve | RFQ |
AEC539988 | Engine Components International | Valve - Intake | RFQ |
655525P005 | Continental Motors Inc | Guide - Intake Valve - 655525P005 | RFQ |
631638 | Continental Motors Inc | Valve | RFQ |
655969 | Continental Motors Inc | Valve | RFQ |
SA631991 | Superior Air Parts | Shaft - Valve Rocker | RFQ |
SA627731 | Superior Air Parts | Valve Key - SA627731 | RFQ |
SA625957 | Superior Air Parts | Spring Valve - Inner | RFQ |
627731 | Continental Motors Inc | Valve Key - 627731 | RFQ |
35971 | Continental Motors Inc | Retainer - Valve Spring Outer | RFQ |
SL15F19957-52 | Superior Air Parts | Push Rod | 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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