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

boring my B16a1

Discussion in 'Engine Building' started by gunz2165, Aug 2, 2004.

  1. gunz2165

    gunz2165 Member

    Messages:
    71
    Likes Received:
    1
    Joined:
    Jun 28, 2004
    Location:
    connecticut
    i was told that i can not bore out the block to my B16a1 from a 1.6 to a 1.8 which it would be bored .020. is this true or can it be done? please let me know asap.
     
  2. beerbongskickass

    beerbongskickass Senior Member

    Messages:
    497
    Likes Received:
    0
    Joined:
    Apr 28, 2004
    Location:
    Longview WA
    Boring your b16 .020 will make it 81.5mm (stock is 81mm). If your rebuilding your motor it's a good idea to do this to make sure the cylinders are round. You will need to get .020 oversize pistons also. If your planning to boost on the stock sleeves do not bore it out more than 81.5mm.
     
  3. lsvtec

    lsvtec GNU/Linux Evangelist

    Messages:
    5,453
    Likes Received:
    3
    Joined:
    Sep 30, 2002
    Location:
    Greater Portland, OR
    To answer your question you would need to bore the engine out 3mm (from 81mm to 84mm) to make ~1.8L. I don't think that the stock sleeves can take that much overbore.
     
  4. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    84mm on b16 is 1.7L, the other 100cc has to be stroked.
     
  5. calvin

    calvin Senior Member

    Messages:
    296
    Likes Received:
    0
    Joined:
    Oct 3, 2002
    Location:
    NETHERLANDS
    Normally 81.5 mm is the largest oversize piston i have seen for the b16a2. I have a set of New SRP pistons 81.5 mm
     
  6. khai_tuan_nguyen

    khai_tuan_nguyen Senior Member

    Messages:
    581
    Likes Received:
    0
    Joined:
    Jul 7, 2003
    I thought 84mm is 2.0 like the crv? I guess the stroke is different. So what is the Liter size of an actual b20 with b16 head?
     
  7. StyleTEG

    StyleTEG Senior Member

    Messages:
    217
    Likes Received:
    0
    Joined:
    Oct 22, 2003


    I don't see why not, the B16 has very little side-loading.

    B20 has much worse side loading and 84mm bore. (but lets not get into the b20 may have different sleeves again ;) )
     
  8. B16

    B16 Super Moderator VIP

    Messages:
    11,539
    Likes Received:
    534
    Joined:
    Sep 30, 2002
    Location:
    yay area, CA

    uhh... 2.0L the head has no effect in the displacement of a motor. its only bore and stroke.
     
  9. JDMilan

    JDMilan Senior Member

    Messages:
    6,730
    Likes Received:
    0
    Joined:
    May 11, 2003
    Location:
    Boca Raton, FL
    why not just buy an ls or gsr bottom
     
  10. shaneb

    shaneb Member

    Messages:
    69
    Likes Received:
    0
    Joined:
    Jun 11, 2003
    any one know a good site to get 82 mm honda pistons like p30 or pr3's ...( 40 over)
     
  11. calvin

    calvin Senior Member

    Messages:
    296
    Likes Received:
    0
    Joined:
    Oct 3, 2002
    Location:
    NETHERLANDS
    b20 with ITR crank 1930cc
    b20 with B16 crank 17... cc(good RS ratio for boost)
    b20 with b17 crank 17.. cc(best RS ratio for boost)
     
  12. calvin

    calvin Senior Member

    Messages:
    296
    Likes Received:
    0
    Joined:
    Oct 3, 2002
    Location:
    NETHERLANDS
    I will host some of the old CRVtec site on my website lot of usefull b20 hybrid info
     
  13. 97CTR

    97CTR Senior Member

    Messages:
    745
    Likes Received:
    0
    Joined:
    Jul 10, 2003




    The largest you will want to go is 82mm on stock sleeves, if you want to crack sleeves then go ahead and bore it out more. And yes the b20 does have different sleeves meant to be 84mm, as well as a slightly diffrent design.
     
  14. StyleTEG

    StyleTEG Senior Member

    Messages:
    217
    Likes Received:
    0
    Joined:
    Oct 22, 2003


    I have never seen any evideance of this, where did you get this information?

    Again, all the stock sleeves are cast iron push ins. They are all open deck. The outer rings are all alluminum.

    How is the design different, other than the sleeves are cast that way or opened up to that much?

    Either way it shouldn't matter, as the material is the same, and the thickness is the same.
     
  15. MikeBergy

    MikeBergy Blah blah blah....

    Messages:
    3,646
    Likes Received:
    1
    Joined:
    Oct 9, 2003
    Location:
    Central Coast, CALI


    Uhhh, I don't think honda made a .040in oversized piston, because the maximum allowable overbore on a honda's stock sleeves is .020in over, as per the factory (helms). So go with some aftermarket pistons.
     
  16. MikeBergy

    MikeBergy Blah blah blah....

    Messages:
    3,646
    Likes Received:
    1
    Joined:
    Oct 9, 2003
    Location:
    Central Coast, CALI
     
  17. MikeBergy

    MikeBergy Blah blah blah....

    Messages:
    3,646
    Likes Received:
    1
    Joined:
    Oct 9, 2003
    Location:
    Central Coast, CALI


    Is this your own opinion, or do you have some good evidence of this? Please post links, as I'd like to see them.
     
  18. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    btw wouldnt a b17 crank in a b20 be more like 1800cc?
     
  19. B16

    B16 Super Moderator VIP

    Messages:
    11,539
    Likes Received:
    534
    Joined:
    Sep 30, 2002
    Location:
    yay area, CA
  20. B16

    B16 Super Moderator VIP

    Messages:
    11,539
    Likes Received:
    534
    Joined:
    Sep 30, 2002
    Location:
    yay area, CA

    for some reason i thought the B20 had different sleeves. so you can bore out any B block to 84mm on stock sleeves and it will be just like the sleeves in the B20??
     
Verification:
Draft saved Draft deleted

Share This Page