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  1. #1

    Yay my turn: piston wash pics

    Well I've put about 7-8 hours on this rebuilt motor, and the plug chops are looking alright. I wanted to get some opinions on any minor adjustments I might need to make to ensure this motor lasts a long time. In my opinion I'm thinking the PTO and MAG might need a touch more fuel, perhaps 1/8th of a turn out on my highs. I don't have an accurate picture of the plugs, because they get wet and oily after running on the trailer during a flushing, also reason for the wet looking pistons. It's also worth noting that it's a smoke bomb at idle. Maybe then my lows need to go a touch leaner, and the highs need a touch richer. Overall, ski never gives the slightest hiccup or hesitation, and runs cleanly up to 6400rpm. I appreciate any opinions. Piston wash is a challenging tool to use properly.
    BTW- mag cylinder has headgasket, it was just off at picture time.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  2. #2
    ph2ocraft's Avatar
    Join Date
    Apr 2006
    Campbell, Ca.
    1/8 maybe a smidge more-0-1/16 if it were mine and then check it one more time but you're sure extremely close.

  3. #3
    ph2ocraft's Avatar
    Join Date
    Apr 2006
    Campbell, Ca.
    I actually really like the lower picture and I'd leave it like that if it were mine BUT I run a little race fuel.
    Maybe richen like I suggested and see if you lose any RPM, if not leave it a tad rich and a little safer.

  4. #4
    Sounds good ph2ocraft. Maybe I should get the PTO and Mag somewhere between how they look and how the CEN looks. Then I can just turn the CEN a touch lean to bring it there too.

    Concerning the richness on the lows I'll just enjoy the smoke bomb effect during warmup. After that it's stays from 1/2 to full throttle and doesn't smoke much after running for awhile.

  5. #5
    Water Bum Rodneyae's Avatar
    Join Date
    Dec 2006
    Roanoke, Va
    Cen. looks great. I would richen up the other two just a tad. It is better to be too rich then blown up..... .

  6. #6

    Join Date
    Sep 2006
    those are almost perfect marks

  7. #7
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
    Join Date
    Oct 2006
    Cleveland OH
    I'm gonna stray a bit and say PTO needs a little more fuel, CEN I'd lean a touch, and MAG is perfect. I run only 92 octane or better though, if you run lower octane, maybe try to get the PTO and MAG like the CEN.

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