Hey guys,
so I finally installed a fancy (meaning expensive and accurate) pressure sender on the bypass of the coolant in the back of my engine (1.8 on a '97).
Goal is to monitor if I have a leak or lost of coolant.
I am running a stock Thermostat (new) and a 19PSI Koyo cap (new) on a Koyo Radiator if that helps...
Outside temp was close to 100deg.
I've wired it to my Traqmate for reliable monitoring.
Sitting on grid, the idiot light (set at 2.5PSI) would regularly light up.
Now I get towards the end of the race and my warning light goes off.
I think I understand what's going on on grid (the cap must be releasing to the overflow tank, though it's supposed to hold at 19psi, it seems to give at below 15psi).
But less understanding of what's happening during the race.
Attached graphs showing temp on top and PSI at the bottom for both the time I sit on grip, and the time during the race...
Any help understand what's really going on would be great. I don't understand why the pressure is not holding up during the race. And may have a complete misunderstanding of what's going on sitting on grid.
One last point, It doesn't look like I'm loosing any water along the way. Everytime I check, I have water up to the neck of the radiator filler.
Thanks for your wisdows guys! It's driving me a little crazy.