Does anyone have information about the engine operating temperature and horsepower? I have done a search and did not find any data. In the past, it made sense to run cool engine temperatures on supercharged or turbo charge motors to help prevent detonation. This enabled higher boost pressures to develop more HP. Is this true for the LNF?

 

Thats generally true of most engines, I'm sure it would apply here. Either running a low temp thermostat or none at all will allow more timing to be run, that is if the tune is calibrated for it and the stock cooling system can keep up.

 

but wouldnt that cause unnecessary wear on the cylinder walls from such low temps? i believe it would also cause the oil to sludge very quickly. expansion of the pistons and sleeves were designed to be operated around 180*F. i dont think it would be a great idea to change it too drastically. just saying...correct me if im wrong

 

Sound theory, but apparently not for the lnf http://www.hptuners.com/forum/showthread.php?t=21173

 

u want ur car to run at its current temps........if u cool it you may increase hp but at the expense of a shitload more fuel.........

ur ecm is gonna tell the injectors to spray more fuel so it burns hotter.........i talked to my friends dad who has been an auto mechanic for 30+ years.....

he helped design and build the exhaust on the delorean in the movie back to the future and he currently is the head of atlantic nissan's serivice department so im sure he knows what hes talking about

 

^^ spraying more fuel would cool the cylinders, not make them burn hotter. the extra fuel would absorb heat from the cylinder, similar to spraying water into the cylinder (only not as extreme)

 

ya but the fuel will burn......

 

Adding more fuel to the cylinders cools them. You might have more fuel but you still have the same amount of air to burn it with. Ever use a cutting torch?? You turn down the fuel and add air for a hotter flame.

 

gotcha maybe im misunderstood what he said word for word........however he made it clear u want ur engine to operate at temp to avoid damage....

 

I'm talking for straight performance. By running colder you obviously give up slight engine durability in turn for an increase in potential horsepower. Product materials such as hypereutectic pistons limit the amount of wear thet would be normally experienced with a missing thermostat.

The only enrichment points that are generally programmed into the "tune" of modern fuel injected cars are to heat up the cat at an accellerated rate. Other than that, as they stated before, an enrichment will cool the combustion chamber further.

 

I know that in diesel engines, adding fuel does heat the engine. However, in gasoline engines, adding fuel cools the motor. This principal is used in aircraft engines.

I was wondering if reducing the engine temp from 194 F (temp of my engine) to about 180 or 160 F would make more power by being able to increase the boost without detonation. Would anyone venture a guess of how much more HP this might allow?

 

I'm going to speculate that with this whole idea of lowering temps to gain power is not really a good idea BECAUSE -

The risks outweigh the benefits.

The power you WOULD gain would be insignificant anyway.

ALSO... on the LNF you would likely lose power anyway as was tested in the forum link earlier in this thread.