CI
+ Reply to Thread
Results 1 to 13 of 13

Thread:
CI

  1. #1
    Retired Air Force Master Sergeant's Avatar
    Join Date
    Jan 2008
    Location
    Lake Havasu
    Posts
    940

    Default CI

    I have heard from more than 1 person that jet boats like engines in the general size of 500CI and that anything much larger than that can make the boat go slower? can this be true? I would think the bigger, the better.

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member cyclone's Avatar
    Join Date
    Dec 2007
    Posts
    3,620

    Default

    Quote Originally Posted by Master Sergeant View Post
    I have heard from more than 1 person that jet boats like engines in the general size of 500CI and that anything much larger than that can make the boat go slower? can this be true? I would think the bigger, the better.
    sounds like those guys are scared to go fast.

  4. #3
    Senior Member
    Join Date
    Dec 2007
    Location
    corona calif
    Posts
    1,119

    Default Cubic inches

    Bigger is better. Right now it is not uncommon for us to build a larger cubic inch engine with low compression. 566, 572, and a 598 all come to mind.

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Retired Air Force Master Sergeant's Avatar
    Join Date
    Jan 2008
    Location
    Lake Havasu
    Posts
    940

    Default

    Quote Originally Posted by greg shoemaker View Post
    Bigger is better. Right now it is not uncommon for us to build a larger cubic inch engine with low compression. 566, 572, and a 598 all come to mind.
    Why low compression? How low?

  7. #5
    Senior Member TwinTurbo540's Avatar
    Join Date
    Jan 2008
    Location
    spokane, WA
    Posts
    1,164

    Default

    My 565 is almost out of the machine shop, I sure hope the daytona will like it!!

    Travis
    I like my women like I like my boats......Fast and ready to get wet at all times!!

  8. #6
    Senior Member
    Join Date
    Dec 2007
    Location
    corona calif
    Posts
    1,119

    Default Top

    We build the engines with low compression so that you can use 91 octane fuel.

  9. #7
    Senior Member Oldsquirt's Avatar
    Join Date
    Dec 2007
    Location
    NorCal
    Posts
    979

    Default

    Quote Originally Posted by Master Sergeant View Post
    I have heard from more than 1 person that jet boats like engines in the general size of 500CI and that anything much larger than that can make the boat go slower? can this be true? I would think the bigger, the better.
    I'm kind of curious to know who told you this. Can I assume it is something you heard at CFW on Father's Day?

  10. #8
    Retired Air Force Master Sergeant's Avatar
    Join Date
    Jan 2008
    Location
    Lake Havasu
    Posts
    940

    Default

    Quote Originally Posted by Oldsquirt View Post
    I'm kind of curious to know who told you this. Can I assume it is something you heard at CFW on Father's Day?
    Some guys in Arizona. It makes sense on a larger scale. Eventually the size of an engine would limit rpm.

  11. #9
    MAMA TRIED BENSE's Avatar
    Join Date
    Jan 2008
    Location
    SOMEWHERE BETWEEN HEAVEN & HELL
    Posts
    1,661

    Default

    Only reason i see to limiting CI size is if you are planning on running a class that calls for limited CI.
    FILTHY FEW

  12. #10
    Senior Member TwinTurbo540's Avatar
    Join Date
    Jan 2008
    Location
    spokane, WA
    Posts
    1,164

    Default

    Quote Originally Posted by Master Sergeant View Post
    Some guys in Arizona. It makes sense on a larger scale. Eventually the size of an engine would limit rpm.
    A guy we race with runs a Sonny's semi hemi in on 09 GTO body, 892 CI and he goes through the lights at 7600rpm.... It makes 2180 Naturaly aspirated! We ran an all aluminum 632 from Steve Schmidt in the dragster and would shift it at 7300 and through the lights at 7500...

    Engine size is not going to limit the rpm like you think, how much rpm are you looking for?

    Travis
    Last edited by TwinTurbo540; 06-24-2010 at 02:45 PM.
    I like my women like I like my boats......Fast and ready to get wet at all times!!

  13. #11
    Retired Air Force Master Sergeant's Avatar
    Join Date
    Jan 2008
    Location
    Lake Havasu
    Posts
    940

    Default

    Quote Originally Posted by TwinTurbo540 View Post
    A guy we race with runs a Sonny's semi hemi in on 09 GTO body, 892 CI and he goes through the lights at 7600rpm.... It makes 2180 Naturaly aspirated! We ran an all aluminum 632 from Steve Schmidt in the dragster and would shift it at 7300 and through the lights at 7500...

    Engine size is not going to limit the rpm like you think, how much rpm are you looking for?

    Travis
    Not much, my 489 is turning my A impeller at 6K so even with the extra HP the RPMs would not be high.

  14. #12
    DJD
    DJD is offline
    6TH STREET MAFIA PRES. DJD's Avatar
    Join Date
    Jan 2008
    Location
    Closer to the river than you!
    Posts
    1,493

    Default

    Different strokes for different folks. A good friend of mine used to tell me that a chainsaw stlye motor will ET better than a long stroke deal just cause of the imediate rpm's at the hit. Seems like theres alot of different setups and motor combos that run really good now days.

  15. #13
    Senior Member
    Join Date
    Mar 2008
    Posts
    351

    Default

    My 540 tt spins a aaa [email protected] 104mph

+ Reply to Thread

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