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Old 04-24-2010, 04:21 PM   #1
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Default how hot should a motor run

how hot should a .28 motor be running at just a genral guess
i checked my heat today on a sportwerks .26 and it was running great tuned in and checked my temp its at 269
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Old 04-24-2010, 04:33 PM   #2
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What engine is it? Different manufacturers and different model engines have different recommended engine temps but as a general anything over 300 is really bad and under 275 is usually a good guess
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Old 04-24-2010, 04:36 PM   #3
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as hot as you can get and still have smoke at the end of the straight, good puff right after.
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Old 04-24-2010, 04:42 PM   #4
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Oh sure if there is smoke you still got the lube you need in the engine but over 300 you start hurting the integrity of the engine parts and you'll cook your engine anyways.
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Old 04-24-2010, 04:54 PM   #5
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If the engine block is glowing......... It's too hot
Bengsch85 is right, but every engine is a little different. I've got a TRX 2.5 that always runs close to 300 and loves it. Till it goes BANG!!
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Old 04-24-2010, 05:02 PM   #6
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Everyones answer is right. All engines are different but try not to exceed 275. Tune for smoke trail and performance not temps but always check to make sure it's not too hot. There is a very narrow gap between a perfect tune and too hot or to cold. Cold will hurt your engine just as fast as heat will so make sure you are in that golden range of 200-250 after a good 1/2 tank of running in normal conditions. I know RB engines like to run a little hotter than others and the trinity ex techs run a little colder. Of course if I could tune as well as I can type my life would be allot simpler
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Old 04-24-2010, 05:14 PM   #7
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Default motor

i have a sh .28 runs at 250 good smoke
sportwerks .26 269 to 279 but the head had smoke coming off it maybe it was some oil on the head that burned off
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Old 04-24-2010, 05:16 PM   #8
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Originally Posted by Jaz240 View Post
Everyones answer is right. All engines are different but try not to exceed 275. Tune for smoke trail and performance not temps but always check to make sure it's not too hot. There is a very narrow gap between a perfect tune and too hot or to cold. Cold will hurt your engine just as fast as heat will so make sure you are in that golden range of 200-250 after a good 1/2 tank of running in normal conditions. I know RB engines like to run a little hotter than others and the trinity ex techs run a little colder. Of course if I could tune as well as I can type my life would be allot simpler
i always tune my motors by ear and performance then check temps
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Old 04-24-2010, 07:14 PM   #9
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Don't get caught up with temps. I always tell people the best thing that ever happened to me was my temp gauge quit working. Tune for performance and smoke, then verify that your temps are ok. You can have smoke and performance and be too hot so if that happens just richen it up a little, or make sure that you have good airflow to the head.
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Old 04-24-2010, 08:06 PM   #10
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Don't get caught up with temps. I always tell people the best thing that ever happened to me was my temp gauge quit working. Tune for performance and smoke, then verify that your temps are ok. You can have smoke and performance and be too hot so if that happens just richen it up a little, or make sure that you have good airflow to the head.
look right above ur post it says i always tune by ear and performance then check temps
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Old 04-24-2010, 08:19 PM   #11
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Depends on alot of things for one what is it in monster truck vs buggy. The tune pipe has alot to do with temp airflow over the engine.

I had picco 26 in savage that ran 300 all the time. Put that same engine in truggy it was very rich had to lean everything alot and temp was 250. Then let my brother use it in a buggy had to lean it some more same temp.
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Old 04-25-2010, 08:20 AM   #12
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Originally Posted by bobbitrc View Post
If the engine block is glowing......... It's too hot
Bengsch85 is right, but every engine is a little different. I've got a TRX 2.5 that always runs close to 300 and loves it. Till it goes BANG!!
i was just curious ... how many gallons of fuel do you burn before this BANG happens .

what are most life spans for a nitro motor.

my first monster truck used a bunch of glow plugs and seized at four gallons.

now my savage x ss is on it's third glow plug and at least ten gallons of 20 %.
i run it 200 - 220 but the specs say up to 275 is ok
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Old 04-25-2010, 08:48 AM   #13
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Heat really doesn't hurt these engines...lack of lubrication does..... you can run 300 if the engine is well lubricated, not that it really happens that way.....but worry more about having a good tune and forget about your silly temp guns !
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Old 04-25-2010, 08:51 AM   #14
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but worry more about having a good tune and forget about your silly temp guns !
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Old 04-25-2010, 08:56 AM   #15
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Depends on alot of things for one what is it in monster truck vs buggy. The tune pipe has alot to do with temp airflow over the engine.

I had picco 26 in savage that ran 300 all the time. Put that same engine in truggy it was very rich had to lean everything alot and temp was 250. Then let my brother use it in a buggy had to lean it some more same temp.
i have it in a losi 8 buggy
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