Radiators...which one?

[Hawk77FT]

Originally Posted by peri.Laynz

I like the center intake vent for the sole purpose of forcing cool air into the engine bay so hot air gets forced out of the side vents.

I highly doubt the center vent is forcing the air to exit the side vents and if it does, it will need to happen at very high speeds. For something like that to happen you need a down/up pressure. The issue is relative pressure: air cannot flow into a space unless the air pressure inside is less than the air pressure outside. If too much air is allowed in, the pressure equalises the airflow. The end result is that the engine gets less cool air rather than more.The center vent will create more turbulence under the hood, with no considerable benefit. With that said however, most times exhaust vents alone improve performance better than an air scoop could.

I would rather stick to the vented ones, but each to their own. it looks good though

[peri.Laynz]

Originally Posted by Hawk77FT

I highly doubt the center vent is forcing the air to exit the side vents and if it does, it will need to happen at very high speeds. For something like that to happen you need a down/up pressure. The issue is relative pressure: air cannot flow into a space unless the air pressure inside is less than the air pressure outside. If too much air is allowed in, the pressure equalises the airflow. The end result is that the engine gets less cool air rather than more.The center vent will create more turbulence under the hood, with no considerable benefit. With that said however, most times exhaust vents alone improve performance better than an air scoop could.

I would rather stick to the vented ones, but each to their own. it looks good though

Yeah I figured it may not perform quite how I wanted but it sounds really good in my head

[plucas]

I have a few facts on this.

1. Stock radiators are super efficient. Just because it is thin doesn't mean it doesn't work well.

2. All the radiators on the market aren't even half the quality of the factory unit (no offense to any vendor who makes one)

3. You do not need a thick radiator to cool these cars even with a lot of power and at the track. With a quality core, you don't need something super thick. A better core would be something still thin (27mm for example) with a good fin height and fin pitch.

Not knocking on anything out there, just want to inform people of the facts. This comes from my experience engineering radiators and oil coolers for racing and custom applications.

[mike the snake]

A general rule for venting for aircraft cowlings is you want the outlet vent areas to be at least 2X the inlet size, this gives the needed air exchange.

If we focus on more exhaust venting (vented hood, skidplate mod, fender garnish vents) then the needed air will make it's way through the front grill.

[BadBRZ]

Originally Posted by mike the snake

A general rule for venting for aircraft cowlings is you want the outlet vent areas to be at least 2X the inlet size, this gives the needed air exchange.

If we focus on more exhaust venting (vented hood, skidplate mod, fender garnish vents) then the needed air will make it's way through the front grill.

We dont need it through the "grill" we need it through the radiator!!!

[mike the snake]

Grill=radiator=front opening=inlet

If the air dams are in place, the air is going through the radiator.

Without enough exhaust venting area, the air won't enter through the radiator well enough.

[jflogerzi]

For NA you don't need a new radiator. Much better spending money on an oil cooler.