Automotive

patrick_y
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Those brakes really were overheating...

Bim, that's some intense driving, you can see parts of the rotor was melting into its own cross drilled holes. 

I've seen Porsche 911 Turbo (996 chassis) rotors with cracks in the cross drilling that almost reached the cracks that dispersed from other holes.  That was a very thoroughly used brake rotor. 

Generally, the E55's brakes with SBC does seem to overheat a lot and surprisingly quickly during racetrack use..  I don't know why this is the case.  Maybe the SBC computer pulsates the brakes in a way to make them overheat?  Also, the E55's front calipers have 8 pistons, each caliper has 4 small pads inside each caliper, most people assume there are two pads, but there are actually four.  So the front axle of the car has 8 small brake pads! 

When they switched to the E63, each front brake caliper was only six pistons, and only two large pads per caliper. 

How did you like the E55?  Was it a dog on the track?  What kind of tires did this E55 have?  Open differential or limited slip differential?  What was good about the E55?  What was bad?  Since it doesn't have a dry sump, were there any engine lubrication issues?

one ton=2000 pounds (lbs)
one tonne=1000 kilograms=2204.6 lbs
4500 lbs=2041 kilograms!