Understanding Valve Springs – Part 1

On this episode of Steve Tech, Steve Morris of Steve Morris Engines gives you info about the proper way to select your valve springs, set up your valve springs and some common misconceptions. Stay tuned for Part 2.

[pthomps]

Would it be possible to put springs on the lifters? It would only have to handle the weight of the lifter to keep it against the cam. And you might be able to back off on main spring force to get longer life.

[wildchildracing]

now all you need to do is develop a springless valvetrain like the decuir system for the smx for the ultimate drag and drive.

[ercost]

3:16 Those spring force numbers are sick, 348-1062 lbs! Are those accurate? Must be for a roller cam race motor.

[matthewuhrich]

Would like to hear your input on reading plugs for METHANOL.

[VGHCX]

Why are OHC engines valve spring pressures so low compared to that of OHV engines? The OHC engines rev higher, yet their springs are smaller in diameter and the spring open and closed pressures are MUCH, MUCH lower than OHV engines. What is the physics behind this?

[classifiedracing]

Do you run PSI Springs in your SMX Engines?? Thanks

[Supanova]

If i have steel heads to i even need spring locators?.490 lift cam. just use shims to set valve installed height and be done.?

[nurburgringdreaming]

How do you feel about running 1511 beehives w/600 lift w/ YT roller rockers on an LS7 OEM head ? Some feel running a double would be a safer bet

[slicktopjz]

Lol dont do what I did and lose 6/24 valve spring seat washers cleaning the head because you forgot to remove them. Cost me an arm and a leg to source oem ones. Id be up for all new springs and matching seats @$500+ if I couldnt locate them.

[harmankardon]

I shave my valve springs to save weight

[mikaelgaiason]

Watching this because I saw there was a second one. You can say you're not an engineer and brush off your bad info all you want, but you're still making a video to teach something aren't you? WTF is the purpose if you're going to miss the mark so badly? Title of the video is "understanding valve springs" but the presenter obviously doesn't understand valve springs... It's harmonic resonance, nothing to do with the normal spring pressure and valve float per-se. A single spring is made with a single density and tension, and at it's resonant frequency the metal loses it's "spring" and basically goes soft like spaghetti. An additional spring will have a different resonant frequency that doesn't overlap with the first spring, but adds weight to the assembly and can cause float if used in the wrong application by somebody who learns everything from YT. Bikes rev over 15k and get past this by engineering better single spring designs with better alloys that push that frequency above the operational range of the engine, or just get rid of the spring altogether

[octane]

This video tell you nothing! Just a load of waffle.