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D15A2 12 valve holes in head

Discussion in 'Civic and CRX - EW' started by itjstagame, Feb 2, 2008.

  1. itjstagame

    itjstagame New Member

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    I want to try Somender's Grooves out on my DX head, for fun and because the head is already off and well why not because if I grenade the drivetrain it's an excuse to look for a D16A1 and transmission.

    Anyway what's involved is adding grooves like this http://themoportal.com/articles/singh/thumbnails/quench-groove_sm.jpg in the squish area to try and get the flame front to move more easily there and make the compression a bit more efficient. You can read more here if you like: Somender SINGH: Squish Zone Grooves: 20%+ improved performance of IC Engines -- 3 articles & US Patent

    Anyway as you can see in the attached pictures, there isn't too much squish area on our heads but I think I can put one right in the center of the squish area and aim it toward the spark plug, similar to this other one with a small amount of squish area: http://img291.imageshack.us/img291/4571/grooovesys6.jpg

    There is this tiny hole right where I would like to make my cut and as you see in the other attachment there's these 'dead valves' that do get moved by the cam shaft and I was wondering if this hole goes all the way through and if it will cause me problems. Will I be ok if I groove near this hole. Should I fill it with JB Weld or block it off somehow? Does the 'valve' actually actuate and move up and down this hole?

    Anyone know, I'm looking for thoughts. Otherwise I can just do two small cuts but just curoius if anyone can tell me about these holes and 'dead' valves.
     

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  2. D15Beater

    D15Beater HNFTuning

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    Google CVCC .....youll find everything you need to know.
     
  3. itjstagame

    itjstagame New Member

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    Wow, that's crazy. I couldn't find too many sources but I get the main idea of stratified charge. I went out and put a spark plug in and was suprised I couldn't see it, so I guess that protrudes into a cavity and I think that large 'spark plug' looking hole in the head and that small hole are connected and the 'dead valve' actuates and injects a richer mixture and ingites out of these holes. So maybe my grooving isn't needed if there's already a hole here in the squish area.

    Does anyone know a bit more about CVCC, like how exactly does it inject into a fully pressurized cylinder and where does it pull the charge from, I don't see any intake runner along that 'dead valve'.
     
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