Best engine rebuild?

Discussion in 'Full Rebuilds' started by VWilluMNaudi, Feb 13, 2020.

?

What is the best way to rebuild my 2003 blaster engine?

  1. Port polish chamfer mill head

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  2. Big bore

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  1. VWilluMNaudi

    VWilluMNaudi New Member

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    Hey guys I’m new to the forum and want to discuss what to do with my 2003 blaster engine rebuild. I’m leaning towards port polish chamfer mill the head jet and pre mix. Any help is appreciated.
     
  2. Larry's Shee

    Larry's Shee Active Member

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    NO Chinese parts !!
    Get head rechambered instead of just milling, better gains.
    What do you have for a pipe?
     
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  3. VWilluMNaudi

    VWilluMNaudi New Member

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    Ok but what about milking the clearance down on the head a few thousandths? I made over 11k rpm with a quad like that before but it was a headache most of the time
     
  4. VWilluMNaudi

    VWilluMNaudi New Member

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    Milling *
     
  5. VWilluMNaudi

    VWilluMNaudi New Member

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    No pipe yet just K&n filter and v force reeds
     
  6. Slydog

    Slydog Member

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    Milling is just going to raise compression. You are still stuck with the stock combustion chamber. Which isn't the greatest.rechambered head is changing combustion chamber shape to a more efficient design. Compression is raised also .its a no brainer
     
  7. Slydog

    Slydog Member

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    Port cylinder for type of riding with rechambered head . definitely a good gain
     
  8. Larry's Shee

    Larry's Shee Active Member

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    Stock head is a conical shape.
    Rechambered is Hemi .
    It’s only about $60 to get the best.
    Search members “Best” and “JoeAK47” both have lots of info on head designs.
     
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  9. VWilluMNaudi

    VWilluMNaudi New Member

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    No pipe yet haven’t needed it for power
     
  10. VWilluMNaudi

    VWilluMNaudi New Member

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  11. VWilluMNaudi

    VWilluMNaudi New Member

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    So I should re chamber the head and mill it down a few thousandths? Or just re chamber? and port the exhaust? I want to do stock bore and squeeze more out of the stock bore. I can figure out the rest with jetting and fuel but am uncertain on the best motor option.
     
  12. Slydog

    Slydog Member

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    There will be no need to mill the head when you have it rechambered.you can have it rechambered for pump gas which will raise compression over stock.or rechambered for different higher octane race fuels only.
    And a trail port. It will give you a big power increase.i had mine done at ken oconner racing.look him up
     

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