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Nitro rustler help!
Hey guys, i just got my new nitro rustler and broke it in, im getting really high engine temps with my body on (between 290-310!) is this normal, and the engine is still really rich wiith lots of blue smoke. what can i do guys
Thanks, Jesse |
RE: Nitro rustler help!
Some engine just like to run hot. but when you get over 300 you will wear the engine out faster than normal. try to richen it up a bit until you see a decrease in performance and then test the temps. Also make sure there are no air leaks in the motor. you can seal up the engine at the back plate, carb and under the cooling head to get rid of any air leaks. the front bearing may be leaking as well.
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RE: Nitro rustler help!
The motor itself shouldn't have air leaks if it's a brand new truck and mill. Also there is really no reason to seal a traxxas motor since they use plenty of o rings for gaskets. I myself have never had a actual leak on a traxxas mill itself. I have however had leaks on other parts such as pipe coupler and fuel tank leaks which drove my temps up to where the OP's temps are running. Now the front bearing is going to leak a little but not much. If you are seeing an oil stripe on the inside of the body then yes your front bearing is leaking excessively.
What I would do is empty and remove the fuel tank. Leave the lines hooked up to the tank. Plug the pulse line (short fuel line that connects to the pipe). Now fully submerge the fuel tank in water using the long fuel line to blow in and pressurize the tank. If it is leaking you'll see bubbles in the water and you will be able to tell where the leak is. Mostly the tank will leak around the lid o ring. I fixed this on my 3.3 mill and temps came back down to 240 to 270 right where they should be. It doesn't take much of a leak to make these things run high temps. It also doesn't hurt to cut some more holes in the body for cooling. |
RE: Nitro rustler help!
An engine being new really has nothing to do with whether or not it will have a leak. traxxas isn't really known for their high quality control standards. especially with the TRX engines. I have had a few 3.3's and a 2.5 and they had air leaks even the new ones. it can be a good idea to seal and enginebefore you ever bolt it all up and run it.
I will agree that is a good idea to check for exhaust leaks and cutting some holes in you body will help keep temps down too. does the engine over heat when the body is off? |
RE: Nitro rustler help!
The enigine does not even come close to overheating when the lid is off, just when its on. If there was a air leak i would be able to tell it by how the engine is running i think lol. i heard from a friend that the engines run hot when their new cuz the pinch is rly tight. i guess i will have to cut up the new body:s
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RE: Nitro rustler help!
ORIGINAL: yakfish An engine being new really has nothing to do with whether or not it will have a leak. traxxas isn't really known for their high quality control standards.Exactly, that's why you see thousands of threads saying how poorly their stuff has been put together out of the box, highly unlikely:eek: especially with the TRX engines.Again there are thousands of people out there that have zero issues with TRX engines and only a handful that post threads about TRX engines failing when it turns out the operator was the cause of the failure. I have had a few 3.3's and a 2.5 and they had air leaks even the new ones.So why did you not bother to call Traxxas and send it back??? A brand new mill should NOT have leaks especially the TRX engines since they use o rings for gaskets. it can be a good idea to seal and enginebefore you ever bolt it all up and run it. Yes it can be a good idea. But good luck sending it back to Traxxas for ERP with silicone sealant goop all over it. They can and most likely will refuse an ERP if they get a motor with sealant on it. I will agree that is a good idea to check for exhaust leaks and cutting some holes in you body will help keep temps down too. does the engine over heat when the body is off? Back to the OP's response. ORIGINAL: nitrojes The engine does not even come close to overheating when the lid is off, just when its on. If there was a air leak i would be able to tell it by how the engine is running i think lol. i heard from a friend that the engines run hot when their new cuz the pinch is rly tight. i guess i will have to cut up the new body:s |
RE: Nitro rustler help!
ORIGINAL: yakfish An engine being new really has nothing to do with whether or not it will have a leak. traxxas isn't really known for their high quality control standards.Exactly, that's why you see thousands of threads saying how poorly their stuff has been put together out of the box, highly unlikely:eek: especially with the TRX engines.Again there are thousands of people out there that have zero issues with TRX engines and only a handful that post threads about TRX engines failing when it turns out the operator was the cause of the failure. I didn't say all the TRX engines had air leaks when they are new but there are without a doubt several that come brand new that do, and there have been and will be several threads on these forums complaining about tuning issues with the TRX engines. the majority of people who have some experience with nitro engines much preffer other brands over the TRX engines because of these tuning issues. I have had a few 3.3's and a 2.5's and they had air leaks even the new ones.So why did you not bother to call Traxxas and send it back??? A brand new mill should NOT have leaks especially the TRX engines since they use o rings for gaskets. If I can fix a problem myself and avoid waiting for customer service I will. but your right... a new engine "SHOULD NOT" have an air leak. it can be a good idea to seal and enginebefore you ever bolt it all up and run it. Yes it can be a good idea. But good luck sending it back to Traxxas for ERP with silicone sealant goop all over it. They can and most likely will refuse an ERP if they get a motor with sealant on it. Again why mess with customer service when you can fix a problem easily yourself I will agree that is a good idea to check for exhaust leaks and cutting some holes in you body will help keep temps down too. does the engine over heat when the body is off? |
RE: Nitro rustler help!
^^ I agree with you saying if it's something you can fix easily then go ahead and do it. I'm the same way. If it only needs a $1 o ring then yeah I'll just pop it in myself instead of sending them the whole mill. Sometimes they will just send you the part needed to fix it free of charge. I had this happen on my slayer. They put the wrong suspension springs in the rear of my truck and they sent me a set of new ones no questions asked free.
What I was getting at was that I'd rather not use the silicone in case the thing blows up and I ERP it. Which ERP is ALOT cheaper than buying a new con rod and piston/sleeve combo. I'm just saying they can refuse to give you the ERP deal if they see all the sealant. |
RE: Nitro rustler help!
I had to seal up a few older .15's. I never owned a 2.5 or 3.3 but i have one in the mail. You need more air moving threw your body. If it runs the righ ttemp with the body off and gets hot with the body on how could the problem be anything else? Start with holes in front and behind the head so the wind moves threw the head with the cover on. Use a dremel tool to open holes up neetly and keep things from cracking. Start some where in the middle and keep making the holes larger till it runs like you want, maybe richin it up a touch too. Thats what i think but i am not an expert. Just a lay-person
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RE: Nitro rustler help!
ORIGINAL: CarGuy7a The motor itself shouldn't have air leaks if it's a brand new truck and mill. Also there is really no reason to seal a traxxas motor since they use plenty of o rings for gaskets. I myself have never had a actual leak on a traxxas mill itself. I have however had leaks on other parts such as pipe coupler and fuel tank leaks which drove my temps up to where the OP's temps are running. Now the front bearing is going to leak a little but not much. If you are seeing an oil stripe on the inside of the body then yes your front bearing is leaking excessively. What I would do is empty and remove the fuel tank. Leave the lines hooked up to the tank. Plug the pulse line (short fuel line that connects to the pipe). Now fully submerge the fuel tank in water using the long fuel line to blow in and pressurize the tank. If it is leaking you'll see bubbles in the water and you will be able to tell where the leak is. Mostly the tank will leak around the lid o ring. I fixed this on my 3.3 mill and temps came back down to 240 to 270 right where they should be. It doesn't take much of a leak to make these things run high temps. It also doesn't hurt to cut some more holes in the body for cooling. Is your engine dirty? A small layer of crust stuck to your block and head will raise temps significantly and inhibit proper cooling when the body is on. Also, what fuel are you running? Some fuels run hotter than others... trinity 30% seems to run the hottest, while blue thunder seems to run the coolest. You should have half the windshield (drivers side) cut out, as well as the drivers side window, it also doesn't hurt to open the back of the body up a little more. |
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