New OTT Heat Exchanger
can we send back in the old one for a discount? like some places do with injectors?(not refering soley to zzp, cause a lot of non vendor race shops/places do this)
are the tabs in the same spot as the other so if i take the one i have and put this one on will it match to the holes i drilled already?
and yea what he said ^^
and yea what he said ^^
and yea what he said ^^
and yea what he said ^^
Last edited by rico; Nov 2, 2009 at 11:21 PM. Reason: Automerged Doublepost
Yes they are in the same spot as the other one. The only problem some people might run into is if they didn't mount there first one directly in the center.
you using HP tuners to change the settings on your 2.2? I want to be able to adjust mine since it's winter time and where I live in WA gets quite chilly this time of year
the bar and plate design inherently is not ideal for fluid heat transfer. It has advantages for working in high pressures, being strong and allowing large coolant flow in a small area but these are not issues for this application.
A cars front radiator performs by placing as much water as possible as close to as much air as possible. The bar and plate's largest flaw is in this regard. imagine you have 2 containers holding water inside. One has walls 1/4" thick and one the walls are thin like tinfoil. Which will keep the water hot longer? Obviously the one with thicker walls. Aluminum is an insulator and only serves the purpose of keeping your coolant in something while the heat exchange takes place. Bar and plate IC's are very thick, hence why they are so heavy. Same size IC weighs twice what the ZZP unit does because of this.
The 2nd, smaller problem of a bar/plate IC is the airflow through it. You are limited by the air hitting the front of the car and the area available for that air to go through. The opening is the same on both cars (assuming Cobalt) and if you keep the speed the same, and both cores cover the same area. But upon close inspection of a bar/plate design you'll notice the 'bars' are effectively blocking up to 1/4 of the airflow through the core. This means that in the same area, a bar/plate won't have as much air flowing through it as a typical radiator style core would.
3rd small factor is wieght. Dropping ~10 pounds is like adding 1HP. Shedding weight anywhere you can makes the car corner better, brake better and accellerate faster. The ZZP S3 is less than 7#'s.
So why bar and plate at all? They are very effective in liquid air applications where charged air is passing through them. The air is forced so the blocking of air by the bars isn't an issue. They withstand higher pressures, so you can run 30-40-50 psi through them and a typical radiator would crush a little over 20.
The science of going fast, and making the most HP is just that. Science.



