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Originally Posted by Pooh2
Sohlman.... What's good dawg? Ready 4 301?
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I'm on my 3rd gallon with the same rod.
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break in
any break in tips besides whats of the cd?
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I ran 2 tanks idle, and then 10 tanks on the track simply blipping the throttle on and off, and on the 11th tank I started leaning the top out 1.5 to 2 hours per tank.
Mark |
so the carb came set to a starting point? or are there adjustments to be made prior to starting.
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If you guy's want a little trick for the Ninja here you go:
Get two reamers (5.0010mm and 4.1810mm) and a few NovaRossi R5/R7 rods: NovaRossi Crank pin= 4.9950mm NovaRossi rod bottom= 4.9975mm clearance= 0.0025mm NovaRossi wrist pin= 4.0000mm NovaRossi rod top= 4.0025mm clearance= 0.0025mm Ninja crank pin= 5.0000mm Bottom of rod= 5.0150mm clearance = 0.015mm Ninja pin= 4.1800mm Ninja rod top= 4.2000mm clearance= 0.02mm Ream the R5/R7 rods by hand since the top and botom ends are smaller bores and you are all set. The R5/R7 rods are 0.01mm wider on the bottom and 0.01mm narrower on the top which will not affect anything since the bottom of the Nova rod does not go past the end of the Ninja crank pin and will not hit the backplate. The clearance numbers don't look that different till you notice they are a decimal place more on the Ninja (10x more). Use the two above reamers by hand and you will have a more perfectly clearanced rod for the Ninja that is bushed on both ends. I used four sets of precision Deltronics sizing bars (they come in 0.0005mm increments) and checked two Ninjas and two 321P's.... clearance numbers were the same for each brand. Hand reaming will result in a slightly larger hole than the reamer size you select.... that is why smaller reamers than you would expect were selected for the reaming process. |
Where were you able to purchase individual reamers in those sizes?
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Originally Posted by Wanabrc
Where were you able to purchase individual reamers in those sizes?
The 4.1800mm reamer will probably just be a re-sharpened 4.2000mm. The 5.0010mm will probably be a 5.0025mm re-sharpened reamer..... that's how they re-size them sometimes- just re-sharpening them takes off a touch of material. They normally come in 0.0025mm increments. |
the new Tuned versons are out check Nitrohouse for prices
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cdelong- That sounds like an interesting idea for reaming a different rod for the Ninja motor, but I don't quite follow your numbers for each rod, I cannot believe the clearances are what you state they are , especially for the Novarossi rod, .0025mm is .000098 inch, that is a VERY tight fit, I was always under the impression that most rods had about .001 to .002 inch clearance, epsecially the big end, that tight of tolerance would be almost impossible to achieve, way more hand fitting, precision reaming and checking, etc. that these motors go thru at the factory. I am not doubting the accuracy of your Deltronic pins, but maybe the accuracy of the measuring of the crank pin and the upper pin, something doesn't sound right to me to come up with these numbers.... even the sloppiest of tolerances you mentioned there is still only .00078 inches, please help me to understand more....Like I said above, I LOVE the idea of hand fitting a "better" rod to one of these motors, I just don't follow the math.....
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Originally Posted by Ffejdat
cdelong- That sounds like an interesting idea for reaming a different rod for the Ninja motor, but I don't quite follow your numbers for each rod, I cannot believe the clearances are what you state they are , especially for the Novarossi rod, .0025mm is .000098 inch, that is a VERY tight fit, I was always under the impression that most rods had about .001 to .002 inch clearance, epsecially the big end, that tight of tolerance would be almost impossible to achieve, way more hand fitting, precision reaming and checking, etc. that these motors go thru at the factory. I am not doubting the accuracy of your Deltronic pins, but maybe the accuracy of the measuring of the crank pin and the upper pin, something doesn't sound right to me to come up with these numbers.... even the sloppiest of tolerances you mentioned there is still only .00078 inches, please help me to understand more....Like I said above, I LOVE the idea of hand fitting a "better" rod to one of these motors, I just don't follow the math.....
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http://www.nitrohouse.com/images/ofn...5/mr12t01t.jpg |
does that say...M a g n e s i u m ?? :sneaky: :nod: :tire:
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wow... sure does say magnesium!
maybe the team guys can stop running the ninja heads on there JP motors now there is a tuned version, or at least that is the rumor circulating that i heard :sneaky: |
well $550 for the .21 BO1T is up there with the O.S. SPEED
http://www.nitrohouse.com/images/ofn...5/mr21b01t.jpg |
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