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Old 03-12-2014, 05:45 PM   #1
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Im going to start racing nitro again this coming summer. I was running a NTC3 with a .12 tz and i was running around 230 F on avg for temp. Im no pro or serious racer by any means. Im just an avg guy who wants to have fun. I have a Mugen MTX4R now a quality car. I put a .12 xz in it. I know its the new version on the tz. I broke in the engine properly and things. Got everything tuned properly for now till the temp gets warm. But what kind of tune or temp should i be running with this engine. Im running 20% odonnell race fuel. I don't want to tune it on the fine edge of lean. Just want to run where i don't fry the engine.
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Old 03-13-2014, 02:10 AM   #2
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Im going to start racing nitro again this coming summer. I was running a NTC3 with a .12 tz and i was running around 230 F on avg for temp. Im no pro or serious racer by any means. Im just an avg guy who wants to have fun. I have a Mugen MTX4R now a quality car. I put a .12 xz in it. I know its the new version on the tz. I broke in the engine properly and things. Got everything tuned properly for now till the temp gets warm. But what kind of tune or temp should i be running with this engine. Im running 20% odonnell race fuel. I don't want to tune it on the fine edge of lean. Just want to run where i don't fry the engine.
230F will be fine. I run my O.S Speed .12 tz spec2 at 210f.
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Old 03-13-2014, 07:45 AM   #3
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sounds good. I was running with the body off in 60 F weather and i was running around 165 F and the engine was screaming fast. So i figure with a body i should be around 215-230 F range. Should i leave the stock plug in there or go to something diff for racing and with 20% fuel
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Old 03-13-2014, 04:55 PM   #4
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sounds good. I was running with the body off in 60 F weather and i was running around 165 F and the engine was screaming fast. So i figure with a body i should be around 215-230 F range. Should i leave the stock plug in there or go to something diff for racing and with 20% fuel
You can use the stock plug, but it won't hurt to buy a selection of plugs in various heat ranges. If you're just doing club racing, 20% nitro will be fine to run it on, but if you plan to do some "big events" you should switch to 16% nitro as that's the rules for nitro tourer.
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Old 03-13-2014, 07:38 PM   #5
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yea just club racing is all their is nothing close for real nitro racing with a permeant track.
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Old 03-14-2014, 01:24 AM   #6
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sounds good. I was running with the body off in 60 F weather and i was running around 165 F and the engine was screaming fast. So i figure with a body i should be around 215-230 F range. Should i leave the stock plug in there or go to something diff for racing and with 20% fuel
Using 20% nitro you should add 0.1mm head shim
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Old 03-14-2014, 02:32 PM   #7
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yea thanx. I already have that extra head shim that it came with in there. Thanx for the input
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