FW: Real world TPI hp gains

[john carroll]

It is not clear to me that dropping the jacket temperature would significantly alter the 
induction air temperature.  It is almost certain to increase the heat rejected to the 
cooling system.  The more heat the system must handle, the less likely the system is to 
hold the engine temperature constant.  The result is more wear.  An increase of 
deposits from condensation of combustion products is almost certain.  After the intake 
valve is closed the warmer engine is all for the better.  I wonder what would be the effect 
of insulating the the induction air system, changing the coolant to a straight dry glycol 
and running engine at 240F?

john carroll

jac at wave.sheridan.wy.us

  
>Decreasing inlet air temp(and intake manifold temp) will increase horsepower
>with no other changes, assuming the ECM is allowed to adjust accordingly.
>Has any one dyno tested a '89 350 TPI engine and then changed only the
>thermostat (195 to 150) and removed the hot coolant going to the throttle
>body to see the net 'real world' torque increase?  What do you guys think
>about an electronic controlled thermostat on FI cars?  Dial it low for fun
>in the sun power.  Dial it high when Jack frost is biting your head off.  
>
>It's my understanding that, too low of an engine temp is bad for the engine
>(long term).
>Higher engine temps give better fuel economy and other desirable
>characteristics for every day driving.  An electronic controlled thermostat
>could allow street roders to have the cake and eat it too... if the gain is
>substantial enough. 
>
>GMD
>