All the talking points here are valid above, I don't dispute any of it.
This was simply me wanting to experiment with a cooler running motor looking for a cheap power increase.
I have Engine Ice coolant in my Busa. Also added the Muzzy fan upgrade. A rider could adapt a second fan to the back of the radiator with some fabrication work.
Since I am still kinda new to these Busa's ( my 2nd ) my question was also intended for me to learn what works from the vast resource we all have here on the Org.
It has been my experince with my all aluminum DOHC Lotus motor ( LT-5, 350 cubic inch) that every degree dropped gains approximaitly 1 horsepower.
How did I learn that to be true ? From the guys running lower temps with 145, 150 ,160 thermostats.
This was also a statement made by John Lingenfelter back in the 90s whom has built many of LT-5 all aluminum engines.
My reasoning is simple with this topic, we have all aluminum engines and I believe the Busa motor might respond in the same way that some aluminum engines respond.
The difference in power when dropping from 190 to 160 F in the car was / is noticeable in my own experince by seat of the pants driving.
The first time it happened it caught me by suprise because unknown to me at the time is happened the spring broke in my thermostat.
I pulled over to check out the engine compartment for any tell tale signs something was messed up, leaking, or something out of place.
Why was my motor suddenly running 20 to 30 degress cooler ? That was how I figured out the thermostat malfunctioned from what is probably a broken spring. I still haven't replaced it yet...
I am enjoying the power increase!
I simply wanted to ask if anybody had tried doing this as a way to increase power. I agree it will take longer for the oil to heat up and that means a slower heat cycle time when your out for a jaunt.
Why could / does it work? It could be because the computer sees a cooler temp in the motor and richens up the mixture to produce the air fuel mixture most appropiate for the conditions and dictated by the
fuel map.