Radiator Cooling suggestions

Boss_302

Great minds think alike!

JWillis72

10926386_776613899060798_2018797660545728962_n.jpg

I really like the new bumper so I hope I don't have to cut holes in it!

JWillis72

It's done, I hope this solved it!


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SouthArk370Z

If nothing else, it sure looks good.

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EliteXpress

Looks Great!

j-rho

You're making a lot of the right moves - distilled water + water wetter, and relocation of the auxillary coolers to the sides.

Fans are needed for the street and low speeds but on track they are restricting airflow/cooling. This is one area where the compromise of a street/track car comes into play.

If you still have an AC condensor in there, removing it (or getting a radiator without one integrated) will help.

You want the hood vent to open in the lowest pressure areas over the hood - and you also want a nice easy/smooth path for the air on the back side of the radiator to make it out that vent. Seems like from the factory the back of the radiator/fans are right up against the front of the motor. If you can lean the top of the radiator forward, and duct the backside up to the vent(s), should help. This is how it's done from the factory on Corvettes and Vipers. Another hood vent laterally in the middle, roughly aligned longitudinally with your forward-most existing vents, should give the hot post-radiator air the easiest path out.

Your boost cooler thing is pretty big and eating up all the prime airflow surface area. Some of the balancing act here may be giving up a little bit of that optimization (smaller size, or a more out-of the-way placement) for better coolant cooling. Since those are liquid lines and more line volume doesn't affect boost response (the way an air-air IC does) you might consider trying to place that whole thing somewhere way out back under the car.

Last thought would be increasing area inbound to the coolers with some holes in the yellow portion of the nose above the bumper beam (along with maybe trimming/removing the bumper beam) to allow for direct flow to the upper half of the radiator.

The factory has a lot of shrouding to direct all incoming air through the coolers - through your extent of mods, ensure you are taking steps to ensure you continue this practice. Air will take the easiest path to lower pressure, which will only be through a stack of coolers if you force it to be.

JWillis72

Thanks or the ideas, if this doesn't fix it we will move on to some of these ideas. I'm taking it to Homestead again in 4 weeks so I will know then if it needs more work. The car does have A/C but I drive the car to the track and live in south Florida so thats not coming out.

swiss370Z

Looks great Sir!

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YzGyz

Car looks nice. I think some NISMO side skirts and it will be done!

YzGyz

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theDreamer

Something I just thought of looking through your photos.
Heat wrapping your pipes & thermal coating for your intercooler & radiator, small change but can help keep heat out of the pipes and keep temps down.

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ckim64

There are several companies.
First off is CSF
Second is DRL
Home
Third is HPI
http://hpi.co.jp/evolve_z/index.html

theDreamer

He already has an upgraded radiator.

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JWillis72

We talked heat wrapping the pipes today when I picked it up. In not aware of the coating for the cooler and radiator, does it make them cool faster?


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theDreamer

I used this company in Houston: Performance coatings by Polydyn
They did my intercooler & intake pipes, the coating is designed to keep heat out and reduce the transfer into the pipe. For the intercooler this means lower temps, same for the pipes in the engine bay.

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JWillis72

Driving the car today it for sure running cooler. Oil never got over 145 around town and I never turned the fans on. I turned the fans on for about a mile or two and dropped the temp 4 degrees. The radiator never got to 2 light left of center so it looks like it is working but I will know for sure in 4 weeks.


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