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Old 11-07-2008, 09:11 PM   #1
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Default nitro % in a ninja mr12to1a.

thanks for looking guys. i have a new ninja mr12to1a and was wondering what nitro % you guys were running?

i have been using 20% werks race blend. I broke in the motor with the 20%.I ran 3 tanks idol then ran 8 tanks on the track getting closer and closer to a sorta of a race tune"215-235"f. think thats broken in enough to race it?

im running out of the 20% and have a new gallon of 30%. would it be a good idea to change %? do I have to shim the head and change turbo glow plug also? thanks again
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Old 11-10-2008, 07:43 AM   #2
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I use 30% on mind, but I would recommend you stick with 20%. if that is not the case and you cannot replace the fuel, than you need to add shims to the head. I went with .5 mm worth of shims. Then, I went with a medium or colder plug. I use the ninja #7 plug. You also will have to retune the gine and be carefull with it. Don't go straight by temperature.
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