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Old 08-16-2003, 12:04 PM   #1
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Was wondering if anyone could help me with tuning a pixy 12 5port. I use a os 8 plug but i can't keep the temp up. it seems like it wants to "flutter". Wants to stay about 190 degrees. I run it in a 10th scale sprint. help would be thankful,roger
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Old 08-16-2003, 04:05 PM   #2
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A guy at my track says that his did the same. Only wanted to stay at around 180-200. It was still very fast. What fuel?
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Old 08-16-2003, 06:07 PM   #3
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does it matter i thought the temp lower is bettre im i right?
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Old 08-16-2003, 06:56 PM   #4
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NITRO BURNS ABOUT 180 IF I'M NOT MISTAKEN. lOW TEMP IS USUALLY COLD PLUG OR FAT. MT12 MUGEN I HAD LOVED 200-210.NEW ONE LIKES 240. DARN GOOD MOTORS.
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Old 08-18-2003, 05:23 PM   #5
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Quote:
Originally posted by 2Hard2Handle
does it matter i thought the temp lower is bettre im i right?
Not ever colder is better, think that the sleeve must expand a little for removing all the friction in the piston. If you want that your engine last, get up to 210 - 215F, but in race conditions a temp between 230 & 250F is ok. More temp than this starts to tax the life of your engine.

Keep this temperatures as a ballpark. Haven't got two engines that perform equal at the same temp, but those figures are very aproximate to what you need to search in engine temp.
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Old 08-19-2003, 06:33 AM   #6
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I run my motors between 220-240. The problem my 3 friends are having with the Pixy seems to be a tuning problem. Can't seem to keep the temp. up and seems to sputter probably in the midrange area. I havn't put mine in yet. My mugen mt-12 is great, thank you very much! Just joking. Was tyold by one of Harcos administraters that the Pixy likes hi oil content. How much that is I really don't know. I use Sidewinder nitro 30% w/12% oil and add 2 caps of Maxima castor 927 ( Kawasaki motorcycle 2 cycle racing oil) to a gallon of fuel. Think that is enough? Thanks for replying.
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