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Please Help,2.5 problems,over heating

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Old 06-19-2003, 12:13 PM
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maxxpower2
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Default Please Help,2.5 problems,over heating

Why does the trx 2.5 get so hot?and is there a bigger better engine,that will fit with out a 21 conversion,or not,.....which is the best way to go with bigger moter.thanks
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Old 06-19-2003, 02:38 PM
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Legendary
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Default I don't know why it gets hot but,

There is a bigger better engine you can drop right in there it's a Sirio 3.0 .18 for about $200!
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Old 06-20-2003, 09:35 PM
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maxxpower2
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Default Please Help,2.5 problems,over heating

Well right now I have it at 3 turns,on high speed valv,and useing a no.8 os glow plug,and new aluminum tuned pipe it semms to be doing much better..........Still thiking of the new dynamite t-maxx conversion.any help well be much apreated.thanks
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Old 06-20-2003, 09:42 PM
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Default Are you thinking,

Of going to a .21??
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Old 06-21-2003, 12:18 PM
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maxxpower2
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Default Please Help,2.5 problems,over heating

Yep,shure are,then I'm putting the 2.5,on my .15 maxx.
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Old 06-21-2003, 12:47 PM
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Razoo
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Default Please Help,2.5 problems,over heating

How hot is hot? The directions say to try and keep it under 270 degrees.
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Old 06-21-2003, 09:02 PM
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oooshutdown
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Default Sirio

Where is the cheapest place online that you can fine the Sirio 3.0 Drop in engine? thanks
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Old 06-22-2003, 10:23 PM
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rfoot
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Default Please Help,2.5 problems,over heating

Why not try the hardcore head for the 2.5. I talked with my LHS guys and the ones who use it highly recommend it. They said thier head temps dropped big time. I will be getting one for my maxx next payday.
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Old 06-23-2003, 01:12 PM
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Turn&Burn
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Default Please Help,2.5 problems,over heating

I put the Crazy Nut head on mine.....It pulled the temps down BIG time, and now it's a pleasure to play with... Yesterday at the track It was running between 235-245 all day long @ 90+ outside temp.....The 2.5 is an awesome engine when it is not running @ 300.....Put a head on it and be done with it....
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Old 06-26-2003, 02:21 PM
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DirtDog
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Default Please Help,2.5 problems,over heating

Where do you get that head from??
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Old 06-26-2003, 05:06 PM
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Turn&Burn
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Default Please Help,2.5 problems,over heating

www.crazynutracing.com Trust me it works.....I have a pic of it on my truck in my gallery...
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Old 06-26-2003, 06:33 PM
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superchomper200
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Default Please Help,2.5 problems,over heating

Well i saw the post about this head and thought well there is th solution to my prob but then i went to the sight and saw how much it was. I mean i am shure it helps and all but just a lil bit more and u could buy a better motor.

Does anyone n where u can get a head cheeper that still helps.




thanx
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Old 06-26-2003, 08:02 PM
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Turn&Burn
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Default Please Help,2.5 problems,over heating

Thats semi true......The only other .15 I have seen that was "better" than the 2.5 cost 190 thats alot more......Also I have seen a few threads about folks having to put a head on the sirio...And that is supposed to be the engine to get....It cost 60 bucks cause it is not made out the average everyday 6061 alum. Also if you don't like it they will give your money back and free shipping.........But I can understand if you have been batteling the 2.5 for a long time and are just pain sick of it......Then I would just put it in file 13 ..........I fought mine for 2 quarts and put it on the shelf and ordered a head.....I just didnt wont to do any damage it running at those high temps.....270-300 degrees is not good for any engine....
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