camshaft : Danny's Engineportal

Close-up of performance engine camshaft and flat-tappet lifters being lubricated with high-zinc engine oil.

Low Zinc Engine Oil Guide: How to Protect Flat Tappet Cams

03/31/2026

The Problem with Modern Low-Zinc Oils: Is Your Engine at Risk? For decades, “zinc” was synonymous with engine health. But if you’ve walked down the oil aisle lately, you might have noticed a shift. Modern […]

Top Dead Center – Is When the Piston Is at the Top of Its Stroke

02/02/2026

Top Dead Center (TDC) refers to, the point when the piston is at the absolute top of its stroke. So, a piston can be at Top Dead Center (TDC), on the compression stroke or on […]

Valve Lash Setting – Top End Ticking Noise, Usually The First Sign

Valve Lash Setting For Quiet Engine Performance

01/08/2026

Valve lash setting, is something most drivers don’t even think about. First, you need to know if you even have an adjustable valve train for valve lash setting. In most cases, you will not have […]

Pushrods On G.M. 3.1-3.4 Engines – This Is Where Length Matters

09/26/2025

Exhaust and Intake Pushrods, on G.M. 3.1 and 3.4 engines are different lengths. So, quite often we still see bent push rods and valves, when they are mixed up. Consequently, Exhaust pushrods on G.M. 3.1 […]

Variable Valve Timing (VVT) – Function And Its Advantages

09/12/2025

So, variable valve timing (VVT) adjusts the opening times and lift of the valves, to suit all operating conditions. This ensures ideal charge cycles, within a wide range of engine speeds and loads. Fuel consumption […]

Torque Specification – Torque To Yield – Torque, Plus Angle

08/06/2025

Without having the proper torque specification, assembling an engine, is just asking for failure. This is especially true, on today’s lightweight engines, that use mostly aluminum castings. So, having the proper torque specification, is crucial […]

Variable Valve Timing (VVT) – Benefits & Advantages Explained

07/15/2025

So, Variable Valve Timing (VVT) is a technology that’s used on many late model engines. And, is designed to improve fuel economy, idle smoothness, emissions and performance. Variable Valve Timing (VVT) allows valve timing to […]

Valve Springs Can Cause, Floating Valves and Pumped Up Lifters

03/26/2025

Valve Springs, have a very basic job, but how they do it, is very important. By the time they have 100,000 miles on them, they have probably lost up to 10%, of their tension. The […]

Automotive Engine Valves: Function, Failure, and Testing

02/20/2025

The main function, of automotive engine valves, is to let air in and out of the cylinders. Above all, the valves in your cylinder head, are a vital part of your engine and undergo, enormous […]

Valve Lifters: Hydraulic vs. Mechanical (Solid), Learn the Difference

01/04/2025

So, valve lifters, come in either hydraulic or mechanical (solid). But, what is the real difference, between them. Both, hydraulic and mechanical (solid) valve lifters, have the same job, but do it differently. They both […]