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Old 11-27-2006, 06:58 PM   #1
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Default Nova Carb getting hot!!

bros, m using a nova engine, as we all know all nova engine comes with metal carb, unlike OS tat use plastic ones, so is it normal for it to get very hot to touch, esp on the mixture needle. coz i was told that its not good for the mixture needle to get hot.

If u try to restart the engine after it finish 1 tank of fuel, it just doesn't want to start up asap, u have to force the fuel to get into the engine by covering the exhaust hole. so is this normal for all nova based engine? thanks
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Old 11-27-2006, 10:48 PM   #2
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The carb setting is too lean. You can try different fuel, higher nitro content, hotter plug, etc so you get same power without running too lean and damage the internal parts of the engine.
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Old 11-28-2006, 05:20 AM   #3
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Quote:
Originally Posted by daniz24
The carb setting is too lean. You can try different fuel, higher nitro content, hotter plug, etc so you get same power without running too lean and damage the internal parts of the engine.
That's not always true. I run an NS3 right now and I can bring it off the track at 200 degs, make an adjustmeant to the sway bar or something and it won't fire back up asap.
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Old 11-28-2006, 05:21 PM   #4
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bro, 200 degree celcious??? are u serious?
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Old 11-28-2006, 11:21 PM   #5
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Quote:
Originally Posted by uniquexme
bro, 200 degree celcious??? are u serious?
Fahrenheit
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Old 11-29-2006, 01:58 AM   #6
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and 200F = 93 Celcius, so no problem....

Yes, this is the problem with metal carbs, once there hot and you need to re-start your engine, this might not work....
That's why engine manufacturers went to composite carbs, but also these have there problems...
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Old 11-29-2006, 05:38 PM   #7
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hmm, so there is no problem with my engine then. keke..
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Old 11-29-2006, 06:23 PM   #8
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this is not normal,if your carb is that hot your runnig too lean! i never have this problem and i run nova and o.s. engines.when your that hot you will hear the fuel sizzle in the carb.richen it up,what plug you using?brand ,number?
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Old 12-28-2006, 06:44 PM   #9
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so which are u saying is too lean? LSN or HSN that cause carb to get hot?
if u richen it, it loose that power liao.
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Old 12-28-2006, 07:05 PM   #10
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THE HEAT IN THE CARB IS COMING FROM THE ENGINE,DO YOU HAVE ENOUGH VENTILATION AROUND THE ENGINE?WHAT TEMP IS THE ENGINE RUNNING?
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Old 12-28-2006, 07:15 PM   #11
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Quote:
Originally Posted by MANINTHEMUGEN
THE HEAT IN THE CARB IS COMING FROM THE ENGINE,DO YOU HAVE ENOUGH VENTILATION AROUND THE ENGINE?WHAT TEMP IS THE ENGINE RUNNING?

ventilation i believe there is nothing we can do to it. we usually run max about 120oC, slightly less than that.
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Old 12-28-2006, 07:18 PM   #12
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I THINK YOUR RUNNIG TO LEAN,ALSO TRY RUNNIG HIGHER NITRO%.AS FAR AS VENTILATION CUT OUT MORE OFF THE REAR OF THE BODY SO HOT AIR CAN GET OUT.WHAT CAR ARE YOU RUNNING,MOTOR?FUEL?
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Old 12-28-2006, 08:28 PM   #13
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how do you have your fuel line run,could be getting vapor lock...
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Old 12-29-2006, 07:17 PM   #14
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I'm running my Nova 12+3 SCT at 240F to 250F. Don't have any problems with it. The engine keeps on getting faster and faster. These new engines like to run hot and they can take the heat also
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Old 01-01-2007, 04:12 AM   #15
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I would gess it could be to much oil in the fuel making the engine work harder. But it could be somthing as simple as this sometimes when you get vapor lock thats when the carby gets so hot it boils the fuel in the carby normaly the cause of this is the crank rubbing on the crank case under the carby. This is nromaly just from manufacture were the crank may of just been to good of a fit and the block be tight on it. Some times this will ware out of the engine over time some times not ive seen people put a crank in a drill press and use very fine sand paper just to take a tiny but of metal away form the crank. you use a drill press because it spins the crank giving you a liner finish and even rather than more metal from one section of the crank. But first off id defently ritchen the engine top and bottom and maby try some difrent fuel with around 10% oil engines like novarossi sirio rb and many outhers do not need much oil in fact more oil in the fuel can cause more probs like over heating and boging the engine down because rember the engine has to move that oil around inside the engine a low % syn high quality oil will = lower running temps better excelaration wile giving max protection an on road engine only needs to run at about 100 deg C max some like it a litle hotter but normaly with the right fuel and tune you will get stagering paformance erunning the engine form about 80 to 100 deg c. Regards Jeremy.
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