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boring out a b18 block

Discussion in 'General Tech and Maintenance' started by y2kg0p317, May 6, 2007.

  1. y2kg0p317

    y2kg0p317 New Member

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    i plan on boring out my b18a block and was wondering what is the max it could b bored without sleeving it?:D
     
  2. boostin4fun

    boostin4fun Boosted ls/vtec ohh yeah!

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    I would not go more then .20 over on a factory block regardless of what any one says. It you are planning on running alot of boost I would recommend .10 pistons or aftermarket sleeves. If you are running all motor go .20 over for that little bit of extra power.
     
  3. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Typically 1mm without boost, .5mm with. You're not going to gain that much displacement by boring out the block without a sleeve job.
     
  4. y2kg0p317

    y2kg0p317 New Member

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    thanks ppls, decide to just buy a block with it done to it. worked out to be much cheaper.
     
  5. johnercivic

    johnercivic New Member

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    Not to nit pick, but I think you mean 0.020 over and 0.010 over?
     
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