Valve spring question, When to change?
Thread Starter
Drifting
Joined: Nov 2002
Posts: 1,905
Likes: 1
From: 2003 Points Champ Great Lakes Corvette Challenge; 2006/2007 Winner MSD True Street
Valve spring question, When to change?
Without looking at my log book, I am guessing I have about 200 runs on my motor.
When do you guys change your valve springs?
I would need to do this in the next month or so before I hit the track this spring.
Do you think I could get another season out of it? Or change 'em as a preventitive maintenance thing?
Matt383
When do you guys change your valve springs?
I would need to do this in the next month or so before I hit the track this spring.
Do you think I could get another season out of it? Or change 'em as a preventitive maintenance thing?
Matt383
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
That depends a lot on your set up. If it's a radical cam and you really wind it up, a change may be in order. If it's more of a DD that you race, you're probably OK. When you start seeing valve float or hydraulic lifter pump up, change them. Although they CAN break, the biggest problem with older, over used, valve springs, is that they lose their tension. For a mild or mid performance engine *I* would wait until they show symptoms.
RACE ON!!!
RACE ON!!!
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Take one off and test it for pressure. If the pressure is still good don't waste the money. If it's starting to get weak, replace them.
It depends on how much overkill was built in when you put it together. I know that the springs I put on my car are way too strong for me to ever worry about them again. They're capable of near .700 lift and I'm only running about .550
It depends on how much overkill was built in when you put it together. I know that the springs I put on my car are way too strong for me to ever worry about them again. They're capable of near .700 lift and I'm only running about .550
Le Mans Master
Joined: Feb 1999
Posts: 6,172
Likes: 11
From: somers, ny
Your best to do what Nathan recommends....test one or two. Or you can buy a tester that clips to the rocker and check them all in the car. As long as they are within the cam specs, you're ok....however, if you're lift is anywhere near the limits of the spring, it might not be a bad idea to change them every couple of years. A broken spring can cause a lot of damage and they aren't that expensive to replace.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by Matt383
Thanks.
It is pretty radical.
Not a DD. See sig.
I am thinking change then.
Any other comments?
Matt383
It is pretty radical.
Not a DD. See sig.
I am thinking change then.
Any other comments?
Matt383
RACE ON!!!
