7k rpm valve spring video

Reply Subscribe

Thread Tools

Search this Thread

Oct 3, 2007 | 10:16 PM

Horsepwraddict

Thread Starter

TECH Enthusiast

iTrader: (12)

Joined: Aug 2007

Posts: 590

Likes: 0

From: Rutland, MA

7k rpm valve spring video

...to go along with the in cylinder video

http://www.youtube.com/watch?v=i_NpzU4pGjc

Oct 3, 2007 | 10:21 PM

3.4camaro

TECH Fanatic

iTrader: (1)

Joined: Aug 2005

Posts: 1,203

Likes: 0

From: Galveston, TX

sweet.

Oct 3, 2007 | 10:57 PM

02TransAm/Batmobile

TECH Junkie

iTrader: (32)

Joined: Sep 2005

Posts: 3,179

Likes: 2

From: Southside Chicago

Cool, looks like a porno. The spring jiggles like a big booty hoe.

Oct 4, 2007 | 07:37 AM

The Alchemist

UNDER PRESSURE MOD

iTrader: (19)

Joined: Nov 2001

Posts: 10,813

Likes: 15

From: Doylestown PA

Watching that you can understand where valve float comes from. If the description is accurate, I bet that valve is seeing well over .700" lift though with some aggressive ramp rates considering it's nascar.

I'd be interested in seeing more videos like this.

Oct 4, 2007 | 07:56 AM

Yeahdoug

Launching!

Joined: Jun 2007

Posts: 212

Likes: 0

From: NC

I took/made these videos on my SpinTron

http://www.racingsprings.com/Pictures.htm

Oct 4, 2007 | 08:52 AM

The Alchemist

UNDER PRESSURE MOD

iTrader: (19)

Joined: Nov 2001

Posts: 10,813

Likes: 15

From: Doylestown PA

Quote:

Originally Posted by Yeahdoug

I took/made these videos on my SpinTron

http://www.racingsprings.com/Pictures.htm

Why do the springs rotate so much? I'm guessing that is a source of friction and would cause excessive wear over time. Maybe I'm wrong, but I would guess that could be a problem.

Oct 4, 2007 | 08:58 AM

Yeahdoug

Launching!

Joined: Jun 2007

Posts: 212

Likes: 0

From: NC

Quote:

Originally Posted by The Alchemist

Why do the springs rotate so much? I'm guessing that is a source of friction and would cause excessive wear over time. Maybe I'm wrong, but I would guess that could be a problem.

It is a source of wear, but it also insures even wear. So it's good and bad.

WHen a compression spring is deflected it's natural tendency is to "twist" outward. This motion along with the frequency of the spring is why we think it spins. Friction also has to play a part too.

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Pouria Savadkouei

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Oct 4, 2007 | 01:23 PM

JimMueller

TECH Veteran

iTrader: (9)

Joined: Jan 2002

Posts: 4,072

Likes: 75

From: Casselberry FL

So where's the one which shows the pushrods acting like a wet noodle?

Oct 4, 2007 | 08:58 PM

#10

The Alchemist

UNDER PRESSURE MOD

iTrader: (19)

Joined: Nov 2001

Posts: 10,813

Likes: 15

From: Doylestown PA

Quote:

Originally Posted by JimMueller

So where's the one which shows the pushrods acting like a wet noodle?

Yeah, I can only imagine how much my stock pushrods are flexing with the TR224 cam and 918 springs. I know not the most extreme, but I've checked them every 3-5k miles and they are still straight as an arrow.

Oct 4, 2007 | 09:04 PM

#11

Ferocity02

TECH Senior Member

iTrader: (60)

Joined: Apr 2003

Posts: 9,397

Likes: 4

Anyone see this comment on the first vid...

"if the engine is at 7,000 rpm, shouldnt the valves (and springs) be moving really really fast? i dont understand."