View Poll Results: Jetting Opinion

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  • Way to rich

    0 0%
  • too rich

    6 27.27%
  • just right

    16 72.73%
  • too lean

    0 0%
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  1. #1
    spud's Avatar
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    Pistonwash Project Ski

    I pulled the head off the project ski for an inspection. I'm also upping my compression at 130 pounds and .061" squish it just isn't going to crack 80.

    Here are pics of the pistonwash.

    Stock carbs, chokes removed

    115 pilot
    2.0 N&S
    Gold Springs
    135 main

    Low screws 1 1/4
    High screws 1 1/2
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Pistonwash 1.JPG 
Views:	46 
Size:	1.06 MB 
ID:	10757   Click image for larger version. 

Name:	Pistonwash 2.JPG 
Views:	37 
Size:	1.20 MB 
ID:	10758   Click image for larger version. 

Name:	Pistonwash 3.JPG 
Views:	37 
Size:	1.12 MB 
ID:	10759  
    Last edited by spud; 11-16-2006 at 12:01 AM.


  2. #2
    GPKiwi's Avatar
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    This is a good test for me it looks just alittle to rich, only a little. So too rich for me.

    Kick my butt if I am wrong... only way to learn.

  3. #3
    Flying Scotsman's Avatar
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    Nice wash looks just right to me.

  4. #4
    cheatin' piston popper addicted's Avatar
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    Looks like mine. From what I've learned, that it a nice pattern for all out, hammer down, unlimited WOT running. You could go leaner, but you won't be able to run it flat out for long.

    Check this thread out. Lots of good pix.
    http://www.greenhulk.net/forums/showthread.php?t=10089

  5. #5
    '02GPRider's Avatar
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    That looks nice and safe for long term reliability.

  6. #6
    Duke's Avatar
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    See below
    Last edited by Duke; 11-16-2006 at 09:32 AM. Reason: double post?

  7. #7
    Duke's Avatar
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    Looks safe to me, especially with that squish and compression.
    Front and middle piston look a little richer than rear. Out of
    curiosity what did the plugs look like? I don't believe in plug
    reading but have found lower compression motors leave more
    deposits, high can be clean with good wash.

  8. #8
    Moderator OsideBill's Avatar
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    Spud when you measured squish did you do it in multiple places in each cylinder? I'm curious to know if the front and rear were different. The wash looks fine the thing I find interesting is the difference between the front and back of each piston. Seems the front side has more build up on each piston and the rear has a nice wash equal to both the right and left sides. Maybe somebody can explain this. here is a picture of one I had from a 65U it was rich but the wash seemed more symetrical. I do not know what this means just an observation.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	PTO.jpg 
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ID:	10772  

  9. #9
    spud's Avatar
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    Folks wanted to see the plugs. These have about 6 hours on them. 1, 2 and 3 left to right. Notice #1 has an area with no buildup.

    The package specs do deliver a good running reliable 1300 capable of 80 with some fine tuning.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	1300 plugs.JPG 
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ID:	10785  

  10. #10
    spud's Avatar
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    I run the two piece 1300 head gasket. Each layer is .010" thick. If I remove one layer it will reduce the squish height from .061" to .051" and reduce the combustion chamber volume bye .54 cc . I'm not sure what that translates to for compression. I think I'll put the ski back together with one layer and compression check it.

    I'll keep you posted.

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