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Old 12-10-2006, 03:47 AM   #1
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Default Nitro motor running hot

Is it common for a nitro engine to run really hot when its being run in?

It is richened up to 3.5 turns as in the manual, and there is a faint smoke trail...
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Old 12-10-2006, 08:53 AM   #2
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What temp is it running at and what engine is it?
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Old 12-10-2006, 10:58 AM   #3
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What fuel are you using???
make sure there is lots of castor oil content in it, not performance stuff.
also check your glow plug, try the medium hot ones.
what about your low end needle, where is that, start with bringing both needles in to zero, then turn them back out a few turns so you can start from scratch.
run it super rich, fuel should be shooting out of the exhaust stinger.
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Old 12-10-2006, 10:59 AM   #4
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you want more than a faint smoke trail. richen it up a little,you want plenty of smoke!
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Old 12-10-2006, 12:21 PM   #5
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Quote:
Originally Posted by Ashley Cobb
Is it common for a nitro engine to run really hot when its being run in?

It is richened up to 3.5 turns as in the manual, and there is a faint smoke trail...
how old is the motor?
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Old 12-10-2006, 01:48 PM   #6
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Quote:
Originally Posted by Marcos.J
how old is the motor?
are you playing GP cars too ??
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Old 12-10-2006, 01:50 PM   #7
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Quote:
Originally Posted by asw7576
are you playing GP cars too ??
i raced GP cars for 6 years before EP
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Old 12-10-2006, 01:55 PM   #8
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The high speed needle is 3.5 turns out from bottom, and the low speed needle I haven't touched.

If i turn the high speed needle out more, it makes it hard to start...

I appreciate the help guys
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Old 12-10-2006, 01:58 PM   #9
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Quote:
Originally Posted by Ashley Cobb
The high speed needle is 3.5 turns out from bottom, and the low speed needle I haven't touched.

If i turn the high speed needle out more, it makes it hard to start...

I appreciate the help guys
what brand motor?what % of nitro?what glow plug do you have?how many shimms do you have on the motor?how old is the motor?
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Old 12-10-2006, 01:58 PM   #10
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Quote:
Originally Posted by Ashley Cobb
Is it common for a nitro engine to run really hot when its being run in?

It is richened up to 3.5 turns as in the manual, and there is a faint smoke trail...
break in period = follow the manual. 80C - 90C is good enough for break in process. You could richen by another turn if you want. Break in with low temp usually you risk the piston sleeve to short live.

After break in :
Yes, hot means good for engine ( 95C - 115C ). Don't believe the smoke trails. Use temp gun and watch and hear how the engine perform on short straight ( exiting corner and accelerate ) and long straight.
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Old 12-10-2006, 02:01 PM   #11
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Quote:
Originally Posted by Marcos.J
i raced GP cars for 6 years before EP
Then I'm the opposite, 4 years EP, now GP ( 2 years )
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Old 12-10-2006, 02:04 PM   #12
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Btw, what engine ?

Different engine have different break in technique
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Old 12-10-2006, 02:08 PM   #13
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Quote:
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Then I'm the opposite, 4 years EP, now GP ( 2 years )
lol
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Old 12-10-2006, 02:28 PM   #14
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Quote:
Originally Posted by Marcos.J
lol
yep.... now I race almost everything every weekend, 1/10 EP, 1/10 GP, 1/8 GP, Mini Cooper, doesn't matter.... just go and have some fun

Back to topic : have you done the break in process ?
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Old 12-10-2006, 02:29 PM   #15
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Quote:
Originally Posted by asw7576
break in period = follow the manual. 80C - 90C is good enough for break in process. You could richen by another turn if you want. Break in with low temp usually you risk the piston sleeve to short live.

After break in :
Yes, hot means good for engine ( 95C - 115C ). Don't believe the smoke trails. Use temp gun and watch and hear how the engine perform on short straight ( exiting corner and accelerate ) and long straight.
cheers mate... I think Ive got it sorted now...

cheers
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