What is the correct way to install valvesprings?
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From: Michigan (Macomb or Lansing)
What is the correct way to install valvesprings? I installed prc duals for my torquer v3 and followed the directions on ls1howto.com. It simply involved putting the piston to the top, compressing the spring and then switching it with the new setup.
I have broken 4 valvesprings so far, so something is not right.
What is all this talk about checking installed height and preload. Why didn't the directions have any of this.
I have broken 4 valvesprings so far, so something is not right.
What is all this talk about checking installed height and preload. Why didn't the directions have any of this.
You have broken four valve springs? Have you dropped or banged any of them? What tool are you using? If you are using one of those tools that has the two claws that grab the spring throw it away.
When you install valve springs you should figure out your seat and open force. The get the seat force, you need to figure out the installed height. Once you have the installed height requirement, you need to determine the clearance to coil bind and the clearance between the retainer and seal. Installed height is adjusted with shims.
LS1howto is not an end all be all factual web site. It is a great site for some general information, but user beware. There are several major issues with the methods used on that site, just do a search of crank thread problems from following the methods for removal and installation of the pulley. The Yella Terra write-up is wrong as well. It will give you some methods to slap in parts, but it certainly doesn't provide information on setting up a valve train.
When you install valve springs you should figure out your seat and open force. The get the seat force, you need to figure out the installed height. Once you have the installed height requirement, you need to determine the clearance to coil bind and the clearance between the retainer and seal. Installed height is adjusted with shims.
LS1howto is not an end all be all factual web site. It is a great site for some general information, but user beware. There are several major issues with the methods used on that site, just do a search of crank thread problems from following the methods for removal and installation of the pulley. The Yella Terra write-up is wrong as well. It will give you some methods to slap in parts, but it certainly doesn't provide information on setting up a valve train.
Thread Starter
11 Second Club
iTrader: (14)
Joined: Nov 2004
Posts: 1,653
Likes: 1
From: Michigan (Macomb or Lansing)
How exactly do you find the installed height? What other steps are necessary to verify correct installation.
Btw, i am using tims tool which is similar to the crane spring install tool.
Btw, i am using tims tool which is similar to the crane spring install tool.
