Engine Crank Stroke???
+ Reply to Thread
Page 1 of 3 1 2 3 LastLast
Results 1 to 14 of 38

Thread:
Engine Crank Stroke???

  1. #1
    Member Mach80's Avatar
    Join Date
    Dec 2007
    Location
    Phoenix, Az
    Posts
    92

    Default Engine Crank Stroke???

    I'm trying to determine what stroke crank is in my boat. Does anyone have a way to measure stroke or Cubic inches without removing a head? The engine is installed in the boat but I'm not sure if it is a 509 or a 540.

    Thanks.

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member 2002CP19's Avatar
    Join Date
    Jun 2008
    Location
    Lake Arrowhead/Lost Lake
    Posts
    692

    Default

    Quote Originally Posted by Mach80 View Post
    I'm trying to determine what stroke crank is in my boat. Does anyone have a way to measure stroke or Cubic inches without removing a head? The engine is installed in the boat but I'm not sure if it is a 509 or a 540.

    Thanks.
    use something like a pencil. Take out the plug. Rotate to BDC, locate an index point (top of threads) make a mark. Rotate to TDC make another mark and measure. Stroke x bore x 8=CID
    Quote Originally Posted by schick View Post
    Hold it firmly on the ground, a few pelvic thrusts should do the trick. If not repeat till satisfied!

  4. #3
    Senior Member Flat BROKE 612's Avatar
    Join Date
    Feb 2010
    Location
    Bumblefvck PEI
    Posts
    245

    Default

    Quote Originally Posted by 2002CP19 View Post
    use something like a pencil. Take out the plug. Rotate to BDC, locate an index point (top of threads) make a mark. Rotate to TDC make another mark and measure. Stroke x bore x 8=CID
    ....

    1/2bore x 1/2 bore x pi x stroke x #cyls
    If you love someone set them free, If they come back with the cops...RUN!!!

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Quote Originally Posted by Flat BROKE 612 View Post
    ....

    1/2bore x 1/2 bore x pi x stroke x #cyls

    bore X bore X .7854 X Stroke X #cylinders



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

  7. #5
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Quote Originally Posted by 2002CP19 View Post
    use something like a pencil. Take out the plug. Rotate to BDC, locate an index point (top of threads) make a mark. Rotate to TDC make another mark and measure. Stroke x bore x 8=CID
    So, you have a magic pencil that can make the turn and drop straight down the cylinder for this high tech method?
    Why did people spend 1500.00 plus for a CID tester when you can do it with a pencil?


    stock 454 bore/stroke
    4.00(stroke) X 4.250(bore) X 8= 136

    I what you checking my engine size at the races



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3
    Last edited by gn7; 06-08-2012 at 12:48 PM.

  8. #6
    Senior Member Franger's Avatar
    Join Date
    Aug 2011
    Location
    Wasilla, Alaska
    Posts
    2,034

    Default

    Quote Originally Posted by gn7 View Post
    So, you have a magic pencil that can make the turn and drop straight down the cylinder for this high tech method?
    Bob, Wouldn't the correct tool for a mechanic to use in this procedure be a ....... "mechanical" pencil?

  9. #7
    Senior Member 2002CP19's Avatar
    Join Date
    Jun 2008
    Location
    Lake Arrowhead/Lost Lake
    Posts
    692

    Default

    Quote Originally Posted by gn7 View Post
    So, you have a magic pencil that can make the turn and drop straight down the cylinder for this high tech method?
    Why did people spend 1500.00 plus for a CID tester when you can do it with a pencil?


    stock 454 bore/stroke
    4.00(stroke) X 4.250(bore) X 8= 136

    I what you checking my engine size at the races
    I didnt say it was high tech. Just a thought...

    I've been wrong before.
    Quote Originally Posted by schick View Post
    Hold it firmly on the ground, a few pelvic thrusts should do the trick. If not repeat till satisfied!

  10. #8
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Quote Originally Posted by 2002CP19 View Post
    I didnt say it was high tech. Just a thought...

    I've been wrong before.
    OH, I thought you had personal experience with that method
    Quote Originally Posted by Franger View Post
    Bob, Wouldn't the correct tool for a mechanic to use in this procedure be a ....... "mechanical" pencil?
    I perfer to use a Camodian Magic Wand myself.




    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3
    Last edited by gn7; 06-08-2012 at 01:14 PM.

  11. #9
    Senior Member Flat BROKE 612's Avatar
    Join Date
    Feb 2010
    Location
    Bumblefvck PEI
    Posts
    245

    Default

    Quote Originally Posted by gn7 View Post

    bore X bore X .7854 X Stroke X #cylinders
    Ya but mine has PI!!! MMMMM pie.......
    If you love someone set them free, If they come back with the cops...RUN!!!

  12. #10
    Senior Member
    Join Date
    Nov 2009
    Location
    Jerome, Idaho
    Posts
    1,737

    Default

    Find someone who has a P&G that can pump the motor for cubic inches.........like at a sanctioned race or some who may be involved with such things!!!!!!

  13. #11
    Senior Member 2002CP19's Avatar
    Join Date
    Jun 2008
    Location
    Lake Arrowhead/Lost Lake
    Posts
    692

    Default

    Quote Originally Posted by gn7 View Post
    OH, I thought you had personal experience with that method


    I perfer to use a Camodian Magic Wand myself.
    Well I have used that method before, just not to measure.


    Looks like the cambodian unit will do the trick...
    Quote Originally Posted by schick View Post
    Hold it firmly on the ground, a few pelvic thrusts should do the trick. If not repeat till satisfied!

  14. #12
    Senior Member bp298's Avatar
    Join Date
    Dec 2007
    Location
    LHC
    Posts
    6,573

    Default

    Quote Originally Posted by Franger View Post
    Bob, Wouldn't the correct tool for a mechanic to use in this procedure be a ....... "mechanical" pencil?
    only if it's a "union" mechanic.

    radius (1/2 bore diameter) squared x 3.1415927 x height(stroke) x 8

    or, pi x r2 x stroke x 8

    with a p&g meter, if you get really really lucky, somebody might get within 10% of the actual ci with it. POS...

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

    Default

    Quote Originally Posted by bp298 View Post
    only if it's a "union" mechanic.

    radius (1/2 bore diameter) squared x 3.1415927 x height(stroke) x 8

    or, pi x r2 x stroke x 8

    with a p&g meter, if you get really really lucky, somebody might get within 10% of the actual ci with it. POS...
    You guys sure do like you PI. MMMMMmmmmmmm pie!



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

  16. #14
    Senior Member alkyexpress's Avatar
    Join Date
    Nov 2008
    Location
    Orangevale CA
    Posts
    633

    Default

    Quote Originally Posted by gn7 View Post
    You guys sure do like you PI. MMMMMmmmmmmm pie!

    Pie is always Good , Bob ,,, Apple , Berry , Peach , Cherry , HAIR , (lol) ....... MMMMMMMMMMM PIE ...
    Last edited by alkyexpress; 06-08-2012 at 04:42 PM.
    [QUOTE=J Shelfo; My all time favorite quote; Flatbottoms are like shopping carts, every once in a while, you get a good one.....

+ Reply to Thread
Page 1 of 3 1 2 3 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