Crank Trigger Timing Graph
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 14 of 16

Thread:
Crank Trigger Timing Graph

  1. #1
    Senior Member VDRIVERACING's Avatar
    Join Date
    Jan 2008
    Location
    Atlantic Beach, FL
    Posts
    1,640

    Default Crank Trigger Timing Graph

    You might find this interesting.

    This is from the MSD website showing the timing variance comparing a crank trigger to the internal trigger on a MSD mag. I presume this supports what many have said about the superior accuracy of the crank trigger.

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Timing Variance.jpg 
Views:	400 
Size:	39.8 KB 
ID:	28729  

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member
    Join Date
    Jan 2008
    Posts
    413

    Default

    7* of swing... Yikes

    That make some expensive paperweights

  4. #3
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,075

    Default

    My brother and I always check the timing on the river at 4,000 rpm. When we put the trigger on the bonce dropped to next to nothing...rock steady compared to the bounce that used to be there.

    Crank Triggers, especially with Nos are the only way to go.

    Sleeper CP
    Big Inch Ford Lover

    "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"

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Lurker
    Join Date
    Dec 2007
    Location
    NC
    Posts
    1,417

    Default

    That's the same thing I have been talking about in previous threads.
    Now picture each cylinder (that is just one or an average of all) moving around that much, but none doing the same thing at the same time!
    It's a mess when looking at all of them simultaneously throughout a dyno pull!

    Now imagine running at 850hp for hours at a time, with rules not allowing crank triggers!

    We have spent countless dollars trying to get distributor's to look like the crank trigger graph.

    It's not easy.....or inexpensive!

    Forgot to mension, that is only 3-4k rpm's. You should see what 6500-9500 looks like!!

  7. #5
    northern member Canuc's Avatar
    Join Date
    Jan 2008
    Location
    Nechako
    Posts
    602

    Question cam drive

    Quote Originally Posted by Warp Speed View Post
    That's the same thing I have been talking about in previous threads.
    Now picture each cylinder (that is just one or an average of all) moving around that much, but none doing the same thing at the same time!
    It's a mess when looking at all of them simultaneously throughout a dyno pull!

    Now imagine running at 850hp for hours at a time, with rules not allowing crank triggers!

    We have spent countless dollars trying to get distributor's to look like the crank trigger graph.

    It's not easy.....or inexpensive!

    Forgot to mension, that is only 3-4k rpm's. You should see what 6500-9500 looks like!!
    warp what does nascar have to run ? is there much to improve on in the distributor itself or is it mostly the " harmonic's " in the valvetrain that screws things up ? thanks for sharing your top shelf info !!! , mostly well beyond anything i'm going to do hope my punctuation is ok
    Quote Originally Posted by gn7 If your ran a cammer your odds of finishing WERE ZERO.

  8. #6
    Highaboosta Unchained's Avatar
    Join Date
    Dec 2007
    Location
    Ada, Michigan
    Posts
    3,431

    Default

    But that's just the tip of the iceberg when discussing negatives of the old school setups we all run.
    What about current loss through the rotor, current loss through the 30" long plug wires, .0021 sec coil charge/discharge time for one coil to fire 4 cylinders per revolution at 7000 rpm ?

    Twin Turbo 1800 HP V-Drive lake boat

    http://s621.photobucket.com/albums/t...t=MAH05771.mp4

    Quote Originally Posted by Trigger View Post
    No one cares about your buddies old antiquated garden hose technology.
    Quote Originally Posted by MAXIMUS View Post
    I think I could run more boost but it's a real hand full right now

  9. #7
    Lurker
    Join Date
    Dec 2007
    Location
    NC
    Posts
    1,417

    Default

    Quote Originally Posted by Canuc View Post
    warp what does nascar have to run ? is there much to improve on in the distributor itself or is it mostly the " harmonic's " in the valvetrain that screws things up ? thanks for sharing your top shelf info !!! , mostly well beyond anything i'm going to do hope my punctuation is ok

    We are only allowed hybrid types of the standard MSD or similar. And every time we breathe on them it has to be approved.
    We have learned a bunch in the last ten years or so (none I'm really allowed to speak of hear) but they are still terrible.

  10. #8
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,075

    Default

    Warp,

    Any stated reason as to why they won't allow crank triggers and roller cams. It seams like the cost of parts for both would be cheaper than making lessor parts better ?

    Those are just two rules that seam really dumb.

    Sleeper 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"

  11. #9
    [email protected]
    Join Date
    Feb 2008
    Location
    Ohio
    Posts
    1,011

    Default

    And if you think about it, production cars don't use distributors and have roller cams. And they call them "stock cars". Hmmmmm

    Tim

  12. #10
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    you left out EFI, traction control, ABS, alloy blocks and OHC



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3

  13. #11
    [email protected]
    Join Date
    Feb 2008
    Location
    Ohio
    Posts
    1,011

    Default

    Some times they could really use the traction control button.LOL

    Tim

  14. #12
    Senior Member Jim W's Avatar
    Join Date
    Dec 2007
    Location
    Upstate NY, Canandaigua
    Posts
    629

    Default

    Quote Originally Posted by River Rat 005 View Post
    Some times they could really use the traction control button.LOL

    Tim


    You left out Onstar

    Sir, this is Shaquilla from Onstar. It appears you have been in a acciadent. Do you require assistance????

    Sir??? Sir???


    LOL, Jim
    GN7
    Do you guys ever read anything I post, or just go straight for the throat?


    Got it wet on 6/15/10-------->finally......



    E-85 I'm saving the world--->8 thumps at a time

  15. #13
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

  16. #14
    LP-25.com Infomaniac's Avatar
    Join Date
    Dec 2007
    Location
    New Port Richey, FL
    Posts
    16,872

    Default

    When limited to a MSD or other mag pickup distributor by rules I'm sure there is a lot of top secret mods that can be done.

    Some not so top secret mods is to use the bendable reluctor. To try and tailor the ignition timing to each cylinder where you want it.

+ 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

Tags for this Thread

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