Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

When do you guys change your valvesprings?

Thread Tools
 
Search this Thread
 
Old 01-30-2008, 09:02 PM
  #1  
TECH Junkie
Thread Starter
iTrader: (4)
 
Soul TKR's Avatar
 
Join Date: Jun 2004
Location: San Diego, CA
Posts: 3,543
Likes: 0
Received 1 Like on 1 Post

Default When do you guys change your valvesprings?

Just curious... especially for the guys with the gigantic cams...

Do you just wait till your valvesprings break, or do most people typically change them after "x" amount of miles?
Old 01-30-2008, 09:10 PM
  #2  
TECH Fanatic
iTrader: (24)
 
BES Stroked Nova's Avatar
 
Join Date: Oct 2004
Location: Lawrenceburg Indiana
Posts: 1,442
Likes: 0
Received 2 Likes on 1 Post

Default

i changed mine shortly after i went from a F-11 to a MS4. the MS4 kicked my crane duals straight in the ***! lol

oh well i learned to always change springs when going to a moster cam! lol

with a MS4, i'd say you should change them at least at 10k miles... that cam is pretty hard on a lot of things.
Old 01-30-2008, 09:23 PM
  #3  
TECH Apprentice
iTrader: (18)
 
1999Transamman's Avatar
 
Join Date: Feb 2006
Location: Back in Jacksonville rapin rice!
Posts: 370
Likes: 0
Received 0 Likes on 0 Posts
Default

BES Stroked Nova I just watched a video of your car on the dyno, that thing sounds nasty!
Old 01-31-2008, 12:56 PM
  #4  
TECH Junkie
Thread Starter
iTrader: (4)
 
Soul TKR's Avatar
 
Join Date: Jun 2004
Location: San Diego, CA
Posts: 3,543
Likes: 0
Received 1 Like on 1 Post

Default

every 10k miles...? that sux
Old 01-31-2008, 12:59 PM
  #5  
Internet Mechanic
iTrader: (17)
 
BlackScreaminMachine's Avatar
 
Join Date: May 2005
Location: Wallingford CT
Posts: 9,831
Likes: 0
Received 2 Likes on 2 Posts

Default

Honestly it depends on the cam, a stock cammed/rocker motor can go the life of the motor, but when you put aggressive ramping lobes, long duration, high lift, it beats the **** out the springs.

Its recommended you change every 10-12k, or if driven less, ever 2 seasons. This is to ensure no valve float potential or spring breakage.
Old 01-31-2008, 01:03 PM
  #6  
TECH Enthusiast
iTrader: (4)
 
MdFormula350's Avatar
 
Join Date: Aug 2005
Location: Maryland; USA
Posts: 539
Likes: 0
Received 0 Likes on 0 Posts
Default

http://www.texas-speed.com/shop/item...d=175&catid=49

"Precision Race Components Double Spring Kit
Texas Speed Hardened Chromoly Pushrods

This combo is perfect for customers wanting a double spring that can take years of abuse & lift up to .660"

Well this is quoted from texas speeds website. a few years for my car would only be like 10-15k miles if that but years for some people would be 50k miles.

I would hope that after installing things everything would be good for at least 20k miles no matter how many years that takes to get to.
Old 01-31-2008, 01:24 PM
  #7  
TECH Fanatic
iTrader: (4)
 
JBIRD02's Avatar
 
Join Date: Jul 2003
Location: Orange Park/ Jacksonville, FL
Posts: 1,075
Likes: 0
Received 0 Likes on 0 Posts
Default

Thats the good thing about my cam, I dont hafta worry about changing valve springs. With only .525 lift, my LS6 springs are good for a long time!
Old 01-31-2008, 03:14 PM
  #8  
11 Second Club
iTrader: (3)
 
Apollo0526's Avatar
 
Join Date: Jul 2005
Location: Daytona Beach, Fl / Stuart, Fl
Posts: 215
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by MdFormula350
http://www.texas-speed.com/shop/item...d=175&catid=49

"Precision Race Components Double Spring Kit
Texas Speed Hardened Chromoly Pushrods

This combo is perfect for customers wanting a double spring that can take years of abuse & lift up to .660"

Well this is quoted from texas speeds website. a few years for my car would only be like 10-15k miles if that but years for some people would be 50k miles.

I would hope that after installing things everything would be good for at least 20k miles no matter how many years that takes to get to.

I just ordered these the other day. Totally recommend this
Old 01-31-2008, 03:23 PM
  #9  
TECH Senior Member
iTrader: (18)
 
DONAIMIAN's Avatar
 
Join Date: Jun 2002
Location: NW Houston, TX
Posts: 10,036
Likes: 0
Received 0 Likes on 0 Posts

Default

Theres no sure way to know when to change them besides pulling a couple and getting them tested.
Old 01-31-2008, 05:43 PM
  #10  
Restricted User
iTrader: (18)
 
socmguy's Avatar
 
Join Date: Apr 2007
Location: Fayetteville, NC
Posts: 1,515
Likes: 0
Received 0 Likes on 0 Posts
Default

^^^ I agree.
If you have 918's just change 'em every 10K or upgrade to the PRC Duals
Old 01-31-2008, 05:47 PM
  #11  
Dom
TECH Fanatic
iTrader: (2)
 
Dom's Avatar
 
Join Date: Nov 2001
Location: Chicago
Posts: 1,381
Likes: 0
Received 1 Like on 1 Post

Default

How long do duals last? PRC and Patriot ones. Not on LSK lobes but the more mild ones.
Old 01-31-2008, 05:59 PM
  #12  
TECH Fanatic
iTrader: (3)
 
Ryan02SS's Avatar
 
Join Date: May 2003
Location: Lake Anna, VA/ Fairmont, WV
Posts: 1,795
Likes: 0
Received 0 Likes on 0 Posts
Default

When you install new valvesprings you should check the installed height along with the open and closed pressures. I've never seen them check out at the right psi at the specified height. Close but always wth deviation. After the springs break in they normally drop some pressure. On all the chrome silicon springs I have tested they seem to drop on average 6-10 psi. I will usually reshim them once broken in to the desired installed height and pressure.

As to a change interval my Patriot Golds approaching 20K miles on my TR224 have only dropped a few psi over the baseline. On hard run endurance WOT marine engines i've seen top quality Isky chrome silicon springs only drop 1-2 psi with 130hrs WOT on them.

If you don't have the ability or will to check your springs I would change them every 10-15K.
Old 01-31-2008, 06:04 PM
  #13  
TECH Junkie
iTrader: (63)
 
01Z0H6's Avatar
 
Join Date: Nov 2001
Location: Hideaway Tx
Posts: 3,598
Received 79 Likes on 64 Posts

Default

I am running the G5X3 with the TSP dual springs. I have had them on for one year in Feb. Have put approx. 30K on em thus far.

Yeah, i really DD this thing!!
Old 01-31-2008, 06:46 PM
  #14  
Dom
TECH Fanatic
iTrader: (2)
 
Dom's Avatar
 
Join Date: Nov 2001
Location: Chicago
Posts: 1,381
Likes: 0
Received 1 Like on 1 Post

Default

Is there a guide on how to check valve spring pressure?
Old 01-31-2008, 07:01 PM
  #15  
12 Second Club
iTrader: (8)
 
GT Griller's Avatar
 
Join Date: Oct 2004
Location: Hereford,Lubbock
Posts: 1,689
Likes: 0
Received 0 Likes on 0 Posts

Default

im changing my 918's at 20k just for peace of mind.
Old 01-31-2008, 07:29 PM
  #16  
TECH Senior Member
iTrader: (18)
 
DONAIMIAN's Avatar
 
Join Date: Jun 2002
Location: NW Houston, TX
Posts: 10,036
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Dom
Is there a guide on how to check valve spring pressure?
Take em off and put them in a spring tester. Summit and Jegs both sell them under engine tools.




All times are GMT -5. The time now is 10:06 AM.