1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Valve Spring Compressor

Discussion in 'The Tool Shed' started by Jon B., Dec 8, 2023.

  1. Dec 8, 2023
    Jon B.

    Jon B. Retired three times; still working.

    SW Minnesota
    Joined:
    Apr 6, 2022
    Messages:
    253
    Greetings, fellow Jeepers!

    The 5.3 is getting new valve springs to match up with the new camshaft. I’ve borrowed a C-clamp style compressor from a friend but it flexes so much that the ‘cup’ for the vale head tries to make a groove in the valve.

    The local FLAPS has a small thing that grips the spring, with a screw that compresses it. Do these things work well? I’ve not used that style.

    Jon B.
     
  2. Dec 8, 2023
    Mr_Vaughan

    Mr_Vaughan New Member

    Central City, NE
    Joined:
    Apr 26, 2023
    Messages:
    43
    i had one of those, bought it from harbor freight. always fought the stupid thing because it wouldnt hold the spring correctly. it broke after doing a few heads and i wasn't particularly sad to see it go.
     
  3. Dec 9, 2023
    73 cj5

    73 cj5 Not ready for the junkyard yet

    Clinton, Mississippi
    Joined:
    Jan 10, 2014
    Messages:
    2,141
    Hit the retainer with a hammer and try to compress the spring again.

    If you can find one for a decent price, a pneumatic valve spring compressor is pretty handy to have. I bought this one used a few years ago and it's fairly old but it's still going strong after seeing a few thousand springs.

    [​IMG]
     
  4. Dec 9, 2023
    Jon B.

    Jon B. Retired three times; still working.

    SW Minnesota
    Joined:
    Apr 6, 2022
    Messages:
    253
    vtxtasy and Jw60 like this.
  5. Dec 9, 2023
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
    Joined:
    Feb 9, 2018
    Messages:
    5,672
    I bought one of these when I was working on my Mustang with a .640 lift solid roller cam: https://www.summitracing.com/parts/sum-906788

    [​IMG]

    My cheap older compressor couldn't deal with the heavy valve springs. The Summit one worked great.
     
    Last edited: Dec 9, 2023
    vtxtasy and dnb71R2 like this.
  6. Dec 9, 2023
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    I used one of the screw types for years, it was an American made one, worked well. No experience with harbor freight version. I made one for the dauntless that works with rocker shaft.
     
    vtxtasy likes this.
  7. Dec 9, 2023
    Jon B.

    Jon B. Retired three times; still working.

    SW Minnesota
    Joined:
    Apr 6, 2022
    Messages:
    253
    The borrowed one is an old Craftsman with a rack & pinion and a ratcheting latch. The “C” is huge - much larger than is necessary - which allows a lot of flex. If it was mine, I’d weld a bar across it to limit the bend but since it’s not…

    It probably worked well for old tractor valves but hasn’t the stiffness required for modern engines.

    Jon B.
     
New Posts