What does it mean to do an overhead on a diesel engine?
valve adjustment
A valve adjustment (sometimes also called an overhead) is vital to the health of your diesel engine to ensure proper combustion. This is often an overlooked task for proper engine maintenance; however, neglecting your valves could lead to a lot of unwanted hassles like loss of power and decreased fuel efficiency.
What does valve clearance adjustment do?
Valve clearances are the small gaps between the tops of the valve stems and the part of the mechanism which presses on them to open the valves . Check the clearances at regular intervals as specified in the car service schedule, and adjust if necessary. Reset the clearances whenever the cylinder head has been removed.
What is the difference between overhead cam and overhead valve?
The term “OHV” stands for “overhead valve” and “OHC” stands for “overhead camshaft.” These terms actually describe the cylinder head layout of a piston engine. An overhead valve (OHV) cylinder head configuration is used in today’s modern-day engines where valves are arranged over the cylinders.
What was the first overhead valve V8?
The first American V8 production engine with overhead valves (a ‘pushrod’ engine) was used by the 1917 Chevrolet Series D. This engine used a counterweighted crankshaft, a detachable crossflow cylinder head, and had a displacement of 4.7 L (288 cu in).
Is DOHC better than OHV?
Replacing a timing chain is only necessary if it’s stretched, or there is another related problem, but it could be expensive. Conclusion: Currently, the DOHC engine design is the most fuel-efficient, but an old-school OHV engine will last longer in similar conditions and is cheaper to maintain.
How does a pre CELECT Cummins injector inject fuel?
The method I listed is from a factory service manual, guess the newer ones are updated. For a Pre-celect Cummins injector to inject the fuel it has to pressurize the fuel in the tip to do that it has fuel in the tip and the plunger comes down, pushing it out, very basic system.
What do you need to know about Cummins coolant?
Fully-formulated coolant contains balanced amounts of antifreeze, SCA, and buffering compounds already premixed 50/50 with deionized water. Alternative maintenance practices for cooling systems can be found in Cummins Coolant Requirements and Maintenance, Bulletin 3666132. Diesel Exhaust Fluid Information
How big is a NTC 400 big cam 3 overhead?
Injector first then the valves intake .014 and exhaust .027 Jake’s at .018. If your CPL is 827, 910, 1185, 1210, 1211, 1256, 1280. then it is 90 inch pounds.