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Thread: Broke a valve spring *PICS*

  1. #1
    whisler151's Avatar
    whisler151 is offline Cadillac Owners Connoisseur
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    Broke a valve spring *PICS*

    So a month or two ago I started hearing a louder than normal ticking form the driver side of the engine. I chalked it up as me being hypersensitive. About three weeks ago I was going WOT and at 5000rpm the car acted as though it hit the rev limiter. it completely dropped power. I thought it was an issue in the tune so I finally made it to SNL today to get my problem dealt with. After some data logging it cylinder 5 was misfiring. We swapped the plug and plug wire, no difference. Opened up the valve cover and BINGO!

    They swapped it out for a new one and now its good as new.

    By the way, my springs are PRC dual spring .675".








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  3. #2
    ctsv154's Avatar
    ctsv154 is offline Cadillac Owners Connoisseur
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    Re: Broke a valve spring *PICS*

    At least you didn't drop that valve! Those dual springs saved your butt!

  4. #3
    whisler151's Avatar
    whisler151 is offline Cadillac Owners Connoisseur
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    Re: Broke a valve spring *PICS*

    Quote Originally Posted by ctsv154 View Post
    At least you didn't drop that valve! Those dual springs saved your butt!
    I know! I am so thankful I went with the dual springs.

    No other damage, just the spring. Glad it wasn't worse.

  5. #4
    heavymetals's Avatar
    heavymetals is offline Cadillac Owners Master
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    Re: Broke a valve spring *PICS*

    Lucky you.

    You would be surprised (maybe not) how many Vettes suffer from broken valve springs.

    Dual springs are cheap insurance.

  6. #5
    rand49er's Avatar
    rand49er is offline All V1s should be maggied.
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    Re: Broke a valve spring *PICS*

    Quote Originally Posted by heavymetals View Post
    ... You would be surprised (maybe not) how many Vettes suffer from broken valve springs. ...
    Yup. Even back in '73, I broke two intake valve springs on my '69 Vette.

    Glad you got this one figured out quickly and relatively painlessly, whisler.
    '05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels, plus a couple more. Mustang dyno'd at 472 RWHP/411 RWTQ.

  7. #6
    lilgCTS-V is offline Cadillac Owners Enthusiast
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    Re: Broke a valve spring *PICS*

    do you think that was what was causing your V to drive all funky when ur rpms were dropping and what not.

  8. #7
    whisler151's Avatar
    whisler151 is offline Cadillac Owners Connoisseur
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    Re: Broke a valve spring *PICS*

    Quote Originally Posted by lilgCTS-V View Post
    do you think that was what was causing your V to drive all funky when ur rpms were dropping and what not.
    Nope, that wasn't it. It still does it. Of course when I was at SNL I couldn't get it to do it. I think it may be the hot ass weather in conjunction with the cam. Oh well, I've learned to live with it.

  9. #8
    shadybx7's Avatar
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    Re: Broke a valve spring *PICS*

    i was expecting alot more carnage when i opened this thread up... im glad i was wrong..

    So how many miles did you get before the spring broke?

  10. #9
    whisler151's Avatar
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    Re: Broke a valve spring *PICS*

    Quote Originally Posted by shadybx7 View Post
    i was expecting alot more carnage when i opened this thread up... im glad i was wrong..

    So how many miles did you get before the spring broke?
    I'm glad I did the dual springs. Had I not then there would have been a lot more carnage. The secondary spring kept me afloat for well over a month.

    Springs had 10,000 miles.

  11. #10
    CTSV_Rob's Avatar
    CTSV_Rob is offline Cadillac Owners 10000+ Posts
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    Re: Broke a valve spring *PICS*

    How much lift do you have in that Cam Whisler?

  12. #11
    whisler151's Avatar
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    Re: Broke a valve spring *PICS*

    Quote Originally Posted by CTSV_Rob View Post
    How much lift do you have in that Cam Whisler?
    Around .610 and .640 I think.

  13. #12
    heavymetals's Avatar
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    Re: Broke a valve spring *PICS*


  14. #13
    heavymetals's Avatar
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    Re: Broke a valve spring *PICS*

    bump

  15. #14
    whisler151's Avatar
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    Re: Broke a valve spring *PICS*

    My shop swapped out the .675" lift springs to .650". I guess they were having some problems with the .675s. After 2 popped springs all is good now.

    I'm still getting the P0300 code often. I think it may be due to a loose plug wire. Have the FireCore wires ordered. Hope that fixed the code issue.

  16. #15
    OneFast V is offline Cadillac Owners Enthusiast
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    Re: Broke a valve spring *PICS*

    im planning on replacing my stock valve springs. Any benefit on a stock cam to run dual spring over single springs? I'm deciding between the comp cams 26921 (dual springs) and 26918 (single spring)... opinions?

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