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Old Jan 11, 2009 | 02:51 PM
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Default Valve Spring Swap

Is there a link for a DIY Valve Spring Swap on an LS1/6 with the motor in the car? Cant find one and I want to do it soon. They say its not that hard. True?
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Old Jan 11, 2009 | 03:29 PM
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Old Jan 11, 2009 | 04:26 PM
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The right tools make all the difference. The Crane valve spring tool is perfect for this job. Don't use one like below. Also, if you make a wrench you can use the TDC method and won't need an air hookup.

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Old Jan 11, 2009 | 04:31 PM
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Originally Posted by vettenuts
The right tools make all the difference. The Crane valve spring tool is perfect for this job. Don't use one like below. Also, if you make a wrench you can use the TDC method and won't need an air hookup.

on all accounts. Here's the one I used..piece of cake

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Old Jan 11, 2009 | 04:36 PM
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Default 1/8" nylon rope

another way to do this is with some 1/8" or 1/4" nylon rope. simply thread a foot or so at tdc into the spark plug hole..works like a dream!!...good luck
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Old Jan 11, 2009 | 04:42 PM
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Originally Posted by midyearvette
another way to do this is with some 1/8" or 1/4" nylon rope. simply thread a foot or so at tdc into the spark plug hole..works like a dream!!...good luck
If the piston is at TDC, what's the rope for? The valves can't drop..
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Old Jan 11, 2009 | 04:51 PM
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Originally Posted by lucky131969
If the piston is at TDC, what's the rope for? The valves can't drop..
the rope takes up room in the chamber and is a soft cushion for the valves to hit on.....a lot of swaps don't need this but like on my big block, it holds the valves up higher and makes things a lot easier to do and it sure beats an air fitting.........every day is a school day!....good luck.....
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Old Jan 11, 2009 | 04:54 PM
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Originally Posted by midyearvette
the rope takes up room in the chamber and is a soft cushion for the valves to hit on.....a lot of swaps don't need this but like on my big block, it holds the valves up higher and makes things a lot easier to do and it sure beats an air fitting.........every day is a school day!....good luck.....
gotcha...
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Old Jan 11, 2009 | 05:34 PM
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I have done the rope method as well, it also helps if when compressing the springs the keepers are stuck. Just make sure a rag is in all drain back holes and over the valves when you compress them.
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Old Jan 11, 2009 | 05:52 PM
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Originally Posted by C5Natie
Is there a link for a DIY Valve Spring Swap on an LS1/6 with the motor in the car? Cant find one and I want to do it soon. They say its not that hard. True?
Like the others have said, it's not very difficult. Be sure to replace your valve stem seals too. Cheap and very worthwhile.
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Old Jan 11, 2009 | 08:24 PM
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Originally Posted by lucky131969
on all accounts. Here's the one I used..piece of cake

Im guessing an instruction manual shows how to use it when bought?
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Old Jan 11, 2009 | 08:26 PM
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Originally Posted by vettenuts
The right tools make all the difference. The Crane valve spring tool is perfect for this job. Don't use one like below. Also, if you make a wrench you can use the TDC method and won't need an air hookup.

How does the wrench setup work? I do have an air compressor though.

Still, any step by step instructions or link I can follow?
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Old Jan 11, 2009 | 08:28 PM
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Originally Posted by LoneStarFRC
Like the others have said, it's not very difficult. Be sure to replace your valve stem seals too. Cheap and very worthwhile.
My TFS heads are only about 9months old. Should they need new valve stems? Im only upgrading from Patriot Gold Springs to the Patriot Extremes. Trying to prevent valve float, presnt or future.
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Old Jan 11, 2009 | 09:10 PM
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Originally Posted by C5Natie
Im guessing an instruction manual shows how to use it when bought?
Yep
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Old Jan 11, 2009 | 09:20 PM
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Originally Posted by C5Natie
My TFS heads are only about 9months old. Should they need new valve stems?
Man I hope not...I think you meant to say valve stem seals...
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Old Jan 11, 2009 | 09:21 PM
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Originally Posted by C5Natie
My TFS heads are only about 9months old. Should they need new valve stems? Im only upgrading from Patriot Gold Springs to the Patriot Extremes. Trying to prevent valve float, presnt or future.
It's not a matter of "need". They are incredibly cheap and it's the perfect time to renew them. BTW, I used a 6pt. deep socket to push the new seals on instead of buying a fancy special seal installer tool that you will likely never use again. Worked like a charm. Seems like it was a 12mm size as I recall.
HTH
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Old Jan 12, 2009 | 01:55 AM
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Thnx for the advice guys. So let me get this straight, 1) hookup air comp to spark plug threads to keep valves up, 2) use spring remover by following the instructions, 3) replace valve stem seals by pressing them on and replace springs.... repeat 8 times. Sound right? Do the stem seals come off easy?
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Old Jan 12, 2009 | 02:38 AM
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Originally Posted by C5Natie
Thnx for the advice guys. So let me get this straight, 1) hookup air comp to spark plug threads to keep valves up, 2) use spring remover by following the instructions, 3) replace valve stem seals by pressing them on and replace springs.... repeat 8 times. Sound right? Do the stem seals come off easy?
Repeat 16 times actually. I'd also like to hear some details from someone who has done this job at home, as this is something I'd like to do also before I get unlucky and have a spring fail.

The rope stuffed in the cylinder at TDC sounds like a neat trick instead of using the air pressure tool in the spark plug hole.
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Old Jan 12, 2009 | 05:43 AM
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From someone who had a compressor issue and saw the valve drop into the cylinder, the rope or TDC method are good options. These methods also help when the locks are stuck.

Only question I have is if the Crane tool fits TFS heads (didn't know you had TFS when it was recommended). It was designed for stock (GM) heads. I have had both Darts and AFR and modified the tool to fit but it took some work.
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Old Jan 12, 2009 | 07:55 AM
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Originally Posted by C5Natie
Thnx for the advice guys. So let me get this straight, 1) hookup air comp to spark plug threads to keep valves up, 2) use spring remover by following the instructions, 3) replace valve stem seals by pressing them on and replace springs.... repeat 8 times. Sound right? Do the stem seals come off easy?
A pair of pliers remove the stem seals; just use caution to not let them slip and scratch the valve stem. They are not terribly tight so it's not really an issue. A drop of oil on the stem to lube the new ones when installing and easy-does-it when pushing them down over the valve lock grooves.
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