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2004-2007 Cadillac CTS-V Performance Mods Discussion, Valve cover removal. in Cadillac CTS-V Series Forum - 2004 - 2007; Good stuff darkman and PISINUOFF.......nothing else to add here besides to the OP: I would upgrade to dual coiled springs ...
  1. #16
    lollygagger8's Avatar
    lollygagger8 is offline Cadillac Owners Connoisseur
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    Re: Valve cover removal.

    Good stuff darkman and PISINUOFF.......nothing else to add here besides to the OP:

    I would upgrade to dual coiled springs since you are shooting nitrous.

  2. #17
    V-Love's Avatar
    V-Love is offline Cadillac Owners Connoisseur
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    Thread Starter

    Re: Valve cover removal.

    So if I want to change all my springs, I have to do each set when piston is at top so valves don't fall into cylinders? I don't want that! I can just use wrench to crank motor from the front, correct? Does anyone know a dual spring set that matches stock ones? I'm fully mechanical but this will be the furthest Ive gone into a motor. So, i apologize if Im asking real basic questions.
    I can't just remove all the rockers like in the link from LS1Tech and then start pulling out push rods? That would drop a bunch of valves down into cylinders?

  3. #18
    heavymetals's Avatar
    heavymetals is offline Cadillac Owners Master
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    Re: Valve cover removal.

    You need an adapter that screws into the spark plug hole and attaches to an air compressor.

    That keeps the valves "up" so you can replace the springs (one set at a time).

    Other wise, you drop valves into the cylinder.

  4. #19
    PISNUOFF Guest

    Re: Valve cover removal.

    You can remove all the rockers at the same time and pull out the push rods. It's recommended that the lifters are on the cam base circle when you torque them back down.

  5. #20
    darkman's Avatar
    darkman is offline Cadillac Owners Master
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    Re: Valve cover removal.

    There are 2 methods for doing valve springs with the heads on -

    http://www.ls1howto.com/index.php?article=23

  6. #21
    odla's Avatar
    odla is offline Cadillac Owners Connoisseur
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    Re: Valve cover removal.

    When do you think you will be doing this? Maybe i could come by and help if im in town? Im out on a bizz trip right now.

  7. #22
    V-Love's Avatar
    V-Love is offline Cadillac Owners Connoisseur
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    Re: Valve cover removal.

    Hopefully within a week.Looking for parts now. I'm just gonna change the one depending what a set costs. I would go dual spring for safety if they were the same tolerences as stockers. But I doubt Luke will have them. I don't want to be messing with it too much cause I can see how you will just want to keep doing more and more. No $$$ is my problem. I can barely afford a spring.

    Anyone know stock part #'s?

  8. #23
    darkman's Avatar
    darkman is offline Cadillac Owners Master
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    Re: Valve cover removal.

    GM Performance 12586484 - Summit Racing sells them for about $10.00 each or GM Performance 12499224 at $70.00 for a set.

  9. #24
    V-Love's Avatar
    V-Love is offline Cadillac Owners Connoisseur
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    Re: Valve cover removal.

    Luke sent me one shipped for around 10 bucks. I pulled the spark plug and put a friends leak down test adapter in it place. You have to do that blind(by feel). Either I got lucky or its not that hard cause it screwed in nice. Then, I just hooked that up to my refrigeration guages and up to a tank of nitrogen. I pumped it up with pressure but it didn't hold at all. I used a 24 mm socket (3/8 drive with a piece of pipe on handle for leverage) on the crank shaft and turned it clockwise(in neutral) untill it started to hold pressure. It still leaked out pretty fast so I just left it pumping with about 60lbs pressure.
    I used a spring tool that just compresses the spring and doesnt bolt to engine. Once i got the spring off, I carefully pushed down on my valve and you could hear the nitrogen escaping. I pulled it back up and it clicked in place. I was confident it wasn't going to move if I was careful. So, new spring on, spring cap on, dab of grease on locks, compress, locks stick nicely, decompress. Looks sweet!
    Then, I just put my pushrod in and bolted on my rocker. I heard you may have to shim them? I didn't. Just bolted everything back up, put the battery in and started her up. It seems fine although I havent run it hard.

    Sorry I have no pics of this. I lost my phone in the bay. Just wanted to let you know how it worked out and thank you guys for all the help. This forum makes owning a V way better of an experience. Doing that work on my own motor was awesome. I see how you guys all get hooked.

  10. #25
    PISNUOFF Guest

    Re: Valve cover removal.

    Awesome.

  11. #26
    WesH8398's Avatar
    WesH8398 is offline Cadillac Owners Enthusiast
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    Good thread to read. The guys around here really are awesome.

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