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z6 mild rebuilding

Discussion in 'Engine Building' started by bistec, Mar 21, 2007.

  1. bistec

    bistec Project EH23

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    I want to rebuild my old z6 and have some question about the process. The engine has 154000 miles. Honestly i'm not looking for big power but a fresh and reliable engine .

    1- Is it absolutely necessary to bore and hone the cylinders?
    2- Can i use this ebay rebuilt kit ? http://cgi.ebay.com/ebaymotors/Mast...ItemQQcategoryZ33620QQitemZ160075076891QQrdZ1 ?
    3- What is absolutely necessary to do or change?

    Thanks.
     
  2. boostin4fun

    boostin4fun Boosted ls/vtec ohh yeah!

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    It is usually necessary to bore and hone your cylinders so they will clean up all of the way so the new rings will seat. I dont recommend one of those rebuild kits, the parts are no where near the quality of OEM Honda parts. You can order factory pistons from Honda .10 over, that is what you will want to do. Also pick up the ring set from them for those pistons. Next have a valve job done on the head, before you drop it off at the machine shop pick up some oem valve seals from Honda and give it to them so they have them. Give the pistons to the machine shop, they usually like to have them so they can measure them before they do the machine work to the block. Your rods should be fine. On the block it is stamped out what bearings you will need to order. Consult a hayne's manual for your civic to learn how to do this. Then order the bearings from Honda. Other then that I recommend new oil and water pumps, belts, all new seals and gaskets. I recommend only Honda's stuff. Settling for cheap aftermarket parts will bite you in the ass big time later on. If you are assembling the engine your self it will save alot of money. I would say you will have maybe$1100-$1200 bucks total wrapped up in machine work and parts. But it is worth it. If you follow all of this advice your engine will be as fresh as a new one. I dont like to cut corners and I suggest you dont.
     
  3. bistec

    bistec Project EH23

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    Thanks that's really helpful!:)
     
  4. 801CRX

    801CRX Got Rice?

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    Or you could just replace the bearings and piston rings for really cheap and have a pretty much "0"mile motor.

    Cheap!!!
     
  5. bistec

    bistec Project EH23

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    Really! No need for boring ,honing and new pistons? I will still need a head work, right?
     
  6. boostin4fun

    boostin4fun Boosted ls/vtec ohh yeah!

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    That would be very half ass.
     
  7. bistec

    bistec Project EH23

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    Thanks!
     
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