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Old 11-17-2007, 12:59 PM   #1
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Default Offroad Nitro Engine Tuning Tips.

I know in the onroad section there is an engine forum but hate jumping back and forth.

Was just looking for good tips and/or links to learning about nitro engine tuning.

Example questions I have.

- What's the difference between running 20 and 30% fuel?
- turning this or that needle does what?
- Why do I have to shim the glow plug for different fuel?

nitro for noobs sorry
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Old 11-17-2007, 01:19 PM   #2
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Do a few searches and you will find a ton of info on this subject.

But for nitro content you are not shimming the plug you are shimming the gap between the top of the piston and the bottom of the head or head button.
most all .21's come setup for 30%.

good luck if you have a specific problem state that and we all can help
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Old 11-17-2007, 01:29 PM   #3
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lots of good info here Engine Tuning 101 (General Tuning)
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Old 11-18-2007, 09:47 AM   #4
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lots of good info here Engine Tuning 101 (General Tuning)
Thanks...great link.

I'll be initially learning on the 8ight RTR Mach427 engine.
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Old 11-19-2007, 11:59 AM   #5
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Here is my top secret tuning tip:

"Lean the bitch out, if it aint runnin' on, yur good."
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Old 11-19-2007, 06:57 PM   #6
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Here is my top secret tuning tip:

"Lean the bitch out, if it aint runnin' on, yur good."
you forgot to tell em they need to run sirio engines and now sidewinder fuel paul ,
if you dont get engines for free then tune wisely my son and remember ,"fuel makes power , not air !"
later ,
monty
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Old 12-02-2007, 05:42 AM   #7
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Hi guys, anyone of you tune the engine by hearing the sound or follow the engine temp? My engine when I run at straight it run great but when I temp it it already at ~120C. If I rich it and run ~100-110C it run abit sluggish. So which method is good from your opinion. Please advise and thanks.
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Old 12-02-2007, 07:52 AM   #8
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Quote:
Originally Posted by Nexus View Post
Thanks...great link.

I'll be initially learning on the 8ight RTR Mach427 engine.
I have this engine in my 8T and it is a great engine. To get all of what the engine can put out, buy a starter box and back plate. Oh, you'll also need a different engine mount. Change the grease in the diffs to sillicone. Check out the set up sheet on the 8ight for the weight for each diff.
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Old 12-02-2007, 08:09 PM   #9
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Originally Posted by tkhoo View Post
Hi guys, anyone of you tune the engine by hearing the sound or follow the engine temp? My engine when I run at straight it run great but when I temp it it already at ~120C. If I rich it and run ~100-110C it run abit sluggish. So which method is good from your opinion. Please advise and thanks.
wherever the engine makes the most power is ok !!! with a stock cooling head 270 is kinda reachin the limits but i have seen engines that wont make the most power till they hit 290 !!! if it starts to lean bog richen it up , if it is just boggy and smokin , lean er out !!!! when power starts to drop off while tuning back off and call it good !!! remember fuel makes power , not air !!!
later , monty
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