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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Car Engines >> Car Nitro & Gas Engines >> Other causes of overheating than running too lean ?
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Other causes of overheating than running too lean ? - 8/27/2008 6:00:11 PM   
jenfre



Posts: 66
Joined: 5/29/2007
From: LAVAL, QC, CANADA
Status: offline 		I was just wondering why my G3.0 hpi engine was getting high temp about 290-300 F (wich i find too high) after few minutes of runs. I seem s to run rich enough lots of smoke was comming out of it. I wanted to know if there is other causes of overheating than ruuning too lean ? I was driving it right no WOT for long i was just bashing smootly and temperature outside was warm not hot !


Thank you !
       Post #: 1

RE: Other causes of overheating than running too lean ? - 8/27/2008 6:32:44 PM   
snowbl!nd



Posts: 3674
Joined: 1/21/2005
From: Manchester, UNITED KINGDOM
Status: offline 		Inadequate air flow over the cooling head?

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RE: Other causes of overheating than running too lean ? - 8/27/2008 6:42:03 PM   
dkastil


 

Posts: 541
Joined: 7/17/2008
From: chicago, IL, USA
Status: offline 		you stated other than running lean but i stillthink you might want to check this ,if you have a air leek it will lean your mill out even if you are pumping tons of fuel threw the carb .My mach .15 had a air leek and got hot verry fast even verry ritch after i sealed my crank caise carb stem and green slimed my hsn and lsn it ran much better and cooler and because of no air leek creating a artificial lean situation i had to adjust almost one full turn leaner on my needle's .

(in reply to jenfre)
       Post #: 3

RE: Other causes of overheating than running too lean ? - 8/27/2008 7:42:50 PM   
CBM Racing


 

Posts: 684
Joined: 1/12/2007
From: rhinelander, WI, USA
Status: online 		A lean high or low speed needle will cause overheating. Also binding in the drivetrain, like a sticky brake or to tight gear mesh, rock jammed in wheel rubbing on arms...things like that. And the ones mentioned above of course. If it runs much cooler(normal temp)with the body off, then you need more/bigger cooling holes cut in.

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RE: Other causes of overheating than running too lean ? - 8/27/2008 7:56:07 PM   
JB COMP



Posts: 4276
Joined: 11/23/2006
From: Navarre, FL, USA
Status: offline 		Air leak, not enough cooling, not shimmed right, plug temp not right, and fuel leak.

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RE: Other causes of overheating than running too lean ? - 8/27/2008 8:47:39 PM   
CHEVPARTPRO


 

Posts: 47
Joined: 7/28/2005
From: BRAMPTON, ON, CANADA
Status: offline 		Improper gearing can also cause heat issues. If the engine doesn't have enough load it can rev too high and cause overheating while running with a proper tune.
Had that problem when I switched from a 3.3 to a 18tz.

(in reply to JB COMP)
       Post #: 6

RE: Other causes of overheating than running too lean ? - 8/27/2008 10:13:34 PM   
jenfre



Posts: 66
Joined: 5/29/2007
From: LAVAL, QC, CANADA
Status: offline 		well thanks for your anwsers !! ill check this out tonight ! because it's on my firestorm i'm use with onroad cars like rs4's but no off road maybe the 2wd make the tire spins too much but i'ill seal the engine first and see if any difference and i'ill try to re tune the engine from it's factory setting !!

(in reply to CHEVPARTPRO)
       Post #: 7

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