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

Compression Ratio (and any other advice)

Discussion in 'Engine Building' started by fight4freedumb, Dec 18, 2008.

  1. fight4freedumb

    fight4freedumb New Member

    Messages:
    2
    Likes Received:
    0
    Joined:
    Dec 7, 2008
    Here is where I am at... I dropped off my B18B1 block at the machine shop. They're installing my Darton sleeves and honing them at 84mm. I have settled on a set of CP pistons and eagle rods (after reading so many recommendations). However, I can't seem to settle on a compression ratio. This engine won't have turbo until it's been installed and broken in.

    B18b1 (non-vtec of course)
    84mm darton sleeves
    CP Pistons (compression?)
    Eagle rods
    OEM Crank
    ARP everything
    must be turbo ready
     
  2. Luis998

    Luis998 Honda Enthusiast

    Messages:
    2,867
    Likes Received:
    55
    Joined:
    Jan 14, 2008
    Location:
    Orlando, Florida
    Since you are going turbo I would personally suggest a 9:1 compression. It will be safe enough and will keep the static compression down. I personally used to want to go with a 10:1 compression but am having doubts myself nowadays, since that, from what I understand, is the highest static compression you would want to run while turbo'ing.

    Best of luck to you my friend. Keep us updated on your build. :thumbsup:

    Just out of curiosity, how much did your sleeving go for?
     
  3. fight4freedumb

    fight4freedumb New Member

    Messages:
    2
    Likes Received:
    0
    Joined:
    Dec 7, 2008
    I was actuallly looking into 9;1 compression. Back in the day 8.5:1 was all I ever thought about putting into a domestic V8 with forced induction. I know that the octane level I am going to run relies on the dynamic compression, but I don't want to end up too high and grinding down pistons to lower it.

    The sleeves went for 400 (just wait long enough. Someone who had 600 bucks and poor foresight will post his brand new sleeves on Craigslist, after he realizes he can't afford the install)
    The install is at a place called T-Hoff. Sleeving is 650, honing is 100 and balancing the rotating assembly is 150. The decking and cleaning are all included in the install price.
    In this Area there are cheaper shops, however they truly are "cheaper" shops. Proper sleeve alignment and install is to important foe me to lowball.
     
  4. Taco15

    Taco15 I wear stretchy pants VIP

    Messages:
    6,998
    Likes Received:
    203
    Joined:
    Jan 11, 2005
    Location:
    Tallahassee Fl
    i agree with Loius999 definitly get some lo lo comp pistons. Its make it much more fun when get to use a bigger turbo and turn the boost up. Looks like your builing a bossted motor for sure. Good choice.
     
Verification:
Draft saved Draft deleted

Share This Page