1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

difference between b16a crank and b18a

Discussion in 'Engine Building' started by Dark91zc, Jan 10, 2006.

  1. Dark91zc

    Dark91zc Senior Member

    Messages:
    283
    Likes Received:
    0
    Joined:
    Sep 9, 2004
    Location:
    Corona,CA
    what is the big difference between a b16a crank and b18a crank. all the specs seem the same.
     
  2. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    stroke.. 77mm vs. 89mm
     
  3. Dark91zc

    Dark91zc Senior Member

    Messages:
    283
    Likes Received:
    0
    Joined:
    Sep 9, 2004
    Location:
    Corona,CA
    i thought it was the rods that are different
    if that is the case can i run a b16a crank with b16a rods and pistons in a b18a block
    or are the blocks also different
     
  4. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

    Messages:
    12,633
    Likes Received:
    193
    Joined:
    Apr 27, 2005
    Location:
    San Antonio, TX
    nope. rods are the same length.

    in inches, the stoke is 3.031 vs 3.334
     
  5. Dark91zc

    Dark91zc Senior Member

    Messages:
    283
    Likes Received:
    0
    Joined:
    Sep 9, 2004
    Location:
    Corona,CA
    so if i want to put b16a pistons in a b18a block i can use the rods also then if they are the same length (in Theory)
     
  6. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

    Messages:
    12,633
    Likes Received:
    193
    Joined:
    Apr 27, 2005
    Location:
    San Antonio, TX
    well, lets find out....*whips out his eagle catalog*

    well the rods are different. or at least the part numbers are

    Rod length 5.394, 1.771 crank pins, .826 piston pin, .935 be width

    part numbers are different.

    LS part #CRS5394A3D
    B16 part #CRS5290H3D

    Couldnt tell you want the difference is.

    and after checking out zealautowerks.com, they say that the LS rod is 3mms longer than the B16. Someone needs to stop confusing reiko.
     
  7. Dark91zc

    Dark91zc Senior Member

    Messages:
    283
    Likes Received:
    0
    Joined:
    Sep 9, 2004
    Location:
    Corona,CA
    3 mm is not that much but it is enough to make a ls rod pop out of a b16a
     
  8. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

    Messages:
    12,633
    Likes Received:
    193
    Joined:
    Apr 27, 2005
    Location:
    San Antonio, TX
    lol. 3mms is a lot when you are talking about .003 clearances.
     
  9. Dark91zc

    Dark91zc Senior Member

    Messages:
    283
    Likes Received:
    0
    Joined:
    Sep 9, 2004
    Location:
    Corona,CA
    thanks for your help reiko :) i am going to do some more research also :)
     
  10. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

    Messages:
    12,633
    Likes Received:
    193
    Joined:
    Apr 27, 2005
    Location:
    San Antonio, TX
    i dont know why i thought they were the same length. i know that a b18 has a 181mm deck height and the b16 has a 172.5mm deck height. that lil bit of stroke difference cant make up for that 8.5 mm difference.

    the LS rods are def longer.
     
  11. Dark91zc

    Dark91zc Senior Member

    Messages:
    283
    Likes Received:
    0
    Joined:
    Sep 9, 2004
    Location:
    Corona,CA
    ok cool thanks for the info :)
     
Verification:
Draft saved Draft deleted

Share This Page