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  1. #1
    Tony's Avatar
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    case porting question

    I'm getting ready to build a 1050. I'm planning on porting the cylinders, using 92 domes, carb work, reeds, etc. So, should I have the cases ported too? What are the advantages? any disadvantages?


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Ported cases help squeeze every bit of HP out of your machine. Stuffing will take up space and add crisp responsiveness to it.
    The cons are the $$$ it costs.

  3. #3
    Tony's Avatar
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    Quote Originally Posted by xlint89 View Post
    Ported cases help squeeze every bit of HP out of your machine.
    Yeah, but will it make a difference on a rec ported top end?

    Quote Originally Posted by xlint89 View Post
    Stuffing will take up space and add crisp responsiveness to it.
    Dumb question...can you port and stuff or is it either/or?

    Quote Originally Posted by xlint89 View Post
    The cons are the $$$ it costs.
    I was under the impression it only cost $150.00, I say impression because people who advertise these services haven't returned my emails. Am I in the ballpark or is much more?

  4. #4
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    "Dumb question...can you port and stuff or is it either/or?"

    From what I understand, its best to do both. If material is removed to port the case, the crankcase volume is increased. To offset that material removed, stuffing is needed to offset the volume change. The counter stroke of the piston has a fixed volume, and the crankcase volume needs to match for best performance.

  5. #5
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    If crankcase volume is increased, the piston counterstroke will create less pressure to push the fuel/air mix into the cylinders.

  6. #6
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    YEP ^^^^^^. $150 is about right. http://sharpsmarine.com/service.htm

    Will it make a difference in a rec port? ????? call Randy (Watcon) or Ronnie (Sharps).

  7. #7
    $150 to port cases? dirt cheap in my book. I'm thinking at least twice that much for a triple.
    JOE

  8. #8

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    http://cgi.ebay.com/ebaymotors/Polar...spagenameZWDVW < ported but still rusted

    check out that crank whew ,

    check out this crank also

    any way this is whats going to happen

    < stock 96 porting


    also what kinda clys are you running ? 009s found in it ?
    Last edited by Bone1050; 02-07-2008 at 04:42 PM.

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