Dual valve spring cam break in
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 14 of 23

Thread:
Dual valve spring cam break in

  1. #1
    Senior Member
    Join Date
    Sep 2009
    Location
    Calimesa CA
    Posts
    195

    Default Dual valve spring cam break in

    I have edelbrock performer aluminum heads on my 460. I have to break in a new comp cam and lifters (flat tappet). I have never done this before and the idea of removing the inner valve spring on every valve for the break in period is intimidating. I understand why it would be better to remove the inner valve spring. I am trying to justify breaking it in without removing the inner valve srpings. Any experience or guidance would be appreciated!!!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	2.jpg 
Views:	101 
Size:	33.0 KB 
ID:	82322   Click image for larger version. 

Name:	1.jpg 
Views:	95 
Size:	36.2 KB 
ID:	82323  

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Seriously off center slowride's Avatar
    Join Date
    Dec 2007
    Location
    Anaheim/BHC- the Shack
    Posts
    2,439

    Default

    One point I can bring up is GET THAT FRAM OFF THERE!

  4. #3
    Senior Member
    Join Date
    Sep 2009
    Location
    Calimesa CA
    Posts
    195

    Default

    seeing as how that is near the begining of the tear down, the fram is not on there. any useable advice?

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Purple headed member Quickjet's Avatar
    Join Date
    Dec 2007
    Location
    Menifee
    Posts
    7,646

    Default

    Yes......remove the inner springs before you fire it. After cam break in re-install. My brother went through a couple cams at break in on a project he had. After removing the inner springs he never had the problem again.
    It's pretty easy if you have an air compressor.
    Quote Originally Posted by thatguy View Post
    I used to believe QJ was a gay black man..

    Quote Originally Posted by Havasu Secret View Post
    Keith...
    Real Fast Big Blocks are always V-Drives

  7. #5
    Senior Member
    Join Date
    Sep 2009
    Location
    Calimesa CA
    Posts
    195

    Default

    I am guessing the compressor is to air up the cylinder to keep the valves in place when the springs are initially pulled?

  8. #6
    Senior Member GRoper's Avatar
    Join Date
    Jun 2009
    Posts
    2,021

    Wink

    Quote Originally Posted by One More Year View Post
    I am guessing the compressor is to air up the cylinder to keep the valves in place when the springs are initially pulled?
    Yes.

  9. #7
    Senior Member
    Join Date
    Sep 2009
    Location
    Calimesa CA
    Posts
    195

    Default

    well common sense (which i am normally lacking!) is telling me to muscle through it and pull the springs for break in. damn!! thanks for all the help and anymore words of wisdom or means and methods would be greatly appreciated!!!

  10. #8
    Super Moderator HammerDown's Avatar
    Join Date
    Dec 2007
    Location
    The Right Coast/SE-PA
    Posts
    5,488

    Default

    Quote Originally Posted by One More Year View Post
    I am guessing the compressor is to air up the cylinder to keep the valves in place when the springs are initially pulled?
    Or...you can do as I do > bring cylinder up to TDC > fish in some stiff rope through the spark plug hole. If the valve drops it'll only drop about 1/8".

    Also >>> I see you're new here > multiple same topic posts are not permitted on the Forum. Please keep this in mind so future posts won't be deleted.
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

  11. #9
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,074

    Default

    Quote Originally Posted by One More Year View Post
    I am guessing the compressor is to air up the cylinder to keep the valves in place when the springs are initially pulled?
    I think there are a few guys who post here from the high desert area, maybe after this "big" weekend someone can help you. They might have one of the tools to help remove the retainer locks.

    I've done the rope in the cylinder trick on the river it works pretty good.

    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

  12. #10
    Purple headed member Quickjet's Avatar
    Join Date
    Dec 2007
    Location
    Menifee
    Posts
    7,646

    Default

    Quote Originally Posted by One More Year View Post
    well common sense (which i am normally lacking!) is telling me to muscle through it and pull the springs for break in. damn!! thanks for all the help and anymore words of wisdom or means and methods would be greatly appreciated!!!
    You'll need a valve spring compressor, an air valve to fit inside the spark plug hole and a rubber mallet. You can do it like Hammerdown suggested and not worry about the compressor and air valve. Both way swork fine.
    And Kudos to you for asking the questions first rather than flattening your cam and wondering how it happend...............
    Quote Originally Posted by thatguy View Post
    I used to believe QJ was a gay black man..

    Quote Originally Posted by Havasu Secret View Post
    Keith...
    Real Fast Big Blocks are always V-Drives

  13. #11
    Senior Member Hass828's Avatar
    Join Date
    Dec 2007
    Location
    okie, lake Texoma
    Posts
    6,278

    Default

    Take all the spark plugs out, remove the rockers from the cylinder that you'll be working on, stick a couple foot of soft cotton rope into the cylinder(leave a foot or so hanging out) and then rotate the engine over BY HAND until it smashes the rope up into the valves holding them in place while you use an over the stud valve spring removal tool. Then when you get the inners out of there and the keepers back in just turn the engine in the opposite direction about 90 degrees and pull the rope back out and move to the next cylinder.
    Same thing to reinstall
    "if we keep doing it the same way we always do..we will always get the same results"
    H8-2-W8
    [email protected] first pass

  14. #12
    Senior Member River Dad's Avatar
    Join Date
    Jan 2008
    Location
    Riverside, CA
    Posts
    1,608

    Default

    Tried to convince a buddy to take the time on anew build and he didn't want to. Ate the first cam in 8 minutes from initial start up. The second time I told him and he still was convinced he just got a bad cam. Cam #2 took 13 minutes. After the second cam we had to tear down the whole motor because of all the shavings in the pan and bearings. Total pain in the ass and a complete waste of time.



    Take the time to do it right. I'm in Canyon Lake and I have all the tools you need and it takes about 30 minutes. You're welcome to them, or you can bring it down and I can help you. RD

  15. #13
    Boat Nut sleekcrafter's Avatar
    Join Date
    Dec 2007
    Location
    South Elgin, Il.
    Posts
    5,131

    Default

    A number of stars need to be in alignment, when breaking in cams today. Reduced seat pressure is 1, proper oil with zinc additive 2, actual cam break-in process 1800 - 2000 rpm's for 20 minutes, and I mean 20 minutes at or between 1800 - 2000 rpm's, no if, and's, or but's. Key is getting enough oil flow on the cam / lifter for an established wear pattern.
    Upper Midwest Power Boat Association
    DRAG BOAT RACING UMPBA #926


  16. #14
    Senior Member sleekvino's Avatar
    Join Date
    Dec 2007
    Posts
    288

    Default

    go roller and forget it!!!
    PORNO RACING INC WHERE ITS "HARD" TO WIN

+ Reply to Thread
Page 1 of 2 1 2 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in


Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95