Engine Bay Cooling

[Canadian818]

Fireblade,
I attempted this with my rear radiator. It did not work out as there is a high pressure eddy up against the back of the car.
I think this is what is happening to some that are getting exhaust fumes coming back into the car.
Bob

So what can we do to relieve pressure behind the bumper? My plan was a mostly open rear bumper, but if there is in fact a high pressure zone behind the car this won't help. When you tried your rear radiator, did you have a diffuser installed? Any spoiler? I'm thinking the diffuser with significant stick out would push that zone rearward.

[Bob_n_Cincy]

So what can we do to relieve pressure behind the bumper? My plan was a mostly open rear bumper, but if there is in fact a high pressure zone behind the car this won't help. When you tried your rear radiator, did you have a diffuser installed? Any spoiler? I'm thinking the diffuser with significant stick out would push that zone rearward.

Here is an 80 mph picture of our configuration: good flow.jpg

also my yard stick cam with radiator fan on.