Radiator for High HP Turbo NSX

9

91nsx85crx

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16 March 2007
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98
Just curious what radiator guys are running with 550+HP turbo'd cars. Specifically ones that see both street and track usage. And what target water temps. are you trying to maintain.
Also how did a front mounted heat exchanger affect that decision.

And does anyone have any experience with Evans waterless coolant use.

Thanks,Todd.
 
91nsx85crx said:
Just curious what radiator guys are running with 550+HP turbo'd cars. Specifically ones that see both street and track usage. And what target water temps. are you trying to maintain.
Also how did a front mounted heat exchanger affect that decision.

And does anyone have any experience with Evans waterless coolant use.

Thanks,Todd.
Click to expand...

Stock with no issues. Will wait and see how it does on the track a XPO but no issues driving in 100+ temp stop and go traffic with AC. Have NSX-R hood with functional diverter.
 
Mishimoto radiator and ducted NSX-R type hood on the LoveFab car.
The intercooler's heat exchanger and pump are mounted up front, but it always runs at normal (about halfway) indicated temps on the gauge.

<a href="http://www.flickr.com/photos/64953781@N05/5915212573/" title="IMG_1312 by NSXbrian, on Flickr"><img src="http://farm6.static.flickr.com/5319/5915212573_7e8c6b8c2f.jpg" width="500" height="375" alt="IMG_1312"></a>

5915212573


http://www.flickr.com/photos/64953781@N05/5915212573/

Brian
 
Last edited:
I am running the stock rad, I've been to my 4th track day since I turbo'd the car. I only do five laps at the time and by my third round out the car starts overheating,when this happens I drop the car in 4th and drive around the track until it cools down again and it's ready for another five laps.

I will be replacing the stock rad with a mishimoto rad, the guys at Magnus use them in every car they build.

For daily driving I have no issues AT ALL.


-MSR
 
I had a radiator made with custom tube and fin design to exact NSX fitment.. all the way down to the breather and drain plug placement and locator tabs with no visible welds :)

Even with stock motors a few of us were overheating at Spring Mtn last May so before I do the motor build next yr I felt I have to solve the cooling problems first. This was designed for 500+hp so it should be ample.

Will be data logging and testing this at the next track event. (Never thought i'd say this.. but hope to see some 100+ deg weather)

These folks have had much success in drift cars which are going sideways all the time hence crappy airflow, have high HP, and always at redline. They have an awesome warranty and the unit is repairable. The only downside is it's a bit heavier because it's copper. I'm eager to install it!

* 25 micron copper splitter fins
* 1.2 mm profile tubes (better airflow. Thinner tubes allows for improved coolant to tube heat transfer)

attachment.php
 

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RYU said:
I had a radiator made with custom tube and fin design to exact NSX fitment.. all the way down to the breather and drain plug placement and locator tabs with no visible welds :)

Even with stock motors a few of us were overheating at Spring Mtn last May so before I do the motor build next yr I felt I have to solve the cooling problems first. This was designed for 500+hp so it should be ample.

Will be data logging and testing this at the next track event. (Never thought i'd say this.. but hope to see some 100+ deg weather)

These folks have had much success in drift cars which are going sideways all the time hence crappy airflow, have high HP, and always at redline. They have an awesome warranty and the unit is repairable. The only downside is it's a bit heavier because it's copper. I'm eager to install it!

* 25 micron copper splitter fins
* 1.2 mm profile tubes (better airflow. Thinner tubes allows for improved coolant to tube heat transfer)

attachment.php
Click to expand...

Holy crap! Whose unit is that???
 
Juice said:
Holy crap! Whose unit is that???
Click to expand...

Xetronic said:
+1 to that request
Click to expand...
The company is called www.hardwarelabs.com but there is no official automotive division yet. Their bread and butter has been supplying industrial server manufacturers/farms and the small time hobbyist with heat exchangers in the PC market where it's important to make high efficiency rads fit in small places. The owner is a big car enthusiast like us and have had initial success (with measurable improvement) in the drift circuit with their rads. I was able to convince them to make a prototype for the NSX. We'll see how testing goes but i'm confident and excited for the results.

I'm also considering having them design an intercooler for the CTSC I don't have yet (lol).

Here's a closeup of the fin density and the lack of welds. Evidently, a thinner single row radiator can be made to be more efficient than the factory OEM version at the same weight. I'm a numbers guy... so we'll see soon enough.

attachment.php
 

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RYU said:
I really like the unit they made for the NSX with the built in oil cooler. That has got to work amazing. I just wish I could afford it.
Click to expand...
Not sure about pumping oil all the way to the front of the car (from an oil pressure standpoint) just to add extra heat to the water cooling system.

IMO using the side inlet vents for an air-oil cooler makes more sense.
 
stuntman said:
Not sure about pumping oil all the way to the front of the car (from an oil pressure standpoint) just to add extra heat to the water cooling system.

IMO using the side inlet vents for an air-oil cooler makes more sense.
Click to expand...
Not sure what that does to oil pressure too but due to water having a much better heat transfer coefficient than air it would be ideal to run an oil cooler the way they did and the way Honda did with the factory OEM oil cooler. It just should have been bigger with more surface area :(.

Actually, based on some of your feedback on previous threads (and Ryneens) i'm going to route my oil cooler via the passenger side vent as well. I just need to run some type of thermostat in-line which you wouldn't need to if it was enclosed in coolant fluid. Via the side vent, I guess a fan isn't necessary either which is a nice bonus.
 
I have a Ron Davis radiator. It's a lot thicker than stock. We'll see how it handles the track at NSXPO. I will be running the car at roughly 550 RWHP.
 
RYU said:
Not sure what that does to oil pressure too but due to water having a much better heat transfer coefficient than air it would be ideal to run an oil cooler the way they did and the way Honda did with the factory OEM oil cooler. It just should have been bigger with more surface area :(.

Actually, based on some of your feedback on previous threads (and Ryneens) i'm going to route my oil cooler via the passenger side vent as well. I just need to run some type of thermostat in-line which you wouldn't need to if it was enclosed in coolant fluid. Via the side vent, I guess a fan isn't necessary either which is a nice bonus.
Click to expand...

Is there one that has been found that will sit flush with side vent? Maybe we should start a different thread for oil cooling rads.
 
Juice said:
Is there one that has been found that will sit flush with side vent? Maybe we should start a different thread for oil cooling rads.
Click to expand...
I found a couple of threads from way back but nothing current. Ryneens setup is nice which I think autowave put together or at least help him install it.

I'll likely go with a setrab heat exchanger for this but have to piece together the an10 lines and fittings as well as locate a oil filter sandwich plate (SOS sells a nice one but its like 3x more expensive than normal but its nice). I wish a vendor like Dali could put together a side mount kit.
 
RYU said:
Not sure what that does to oil pressure too but due to water having a much better heat transfer coefficient than air it would be ideal to run an oil cooler the way they did and the way Honda did with the factory OEM oil cooler. It just should have been bigger with more surface area :(.

Actually, based on some of your feedback on previous threads (and Ryneens) i'm going to route my oil cooler via the passenger side vent as well. I just need to run some type of thermostat in-line which you wouldn't need to if it was enclosed in coolant fluid. Via the side vent, I guess a fan isn't necessary either which is a nice bonus.
Click to expand...
When water temp is say 200*F and oil is 260*F, there is a 60* delta to cool the oil whereas a hot 110*F day will have a 150*F temperature delta to more efficiently cool the oil. Plus the extra heat from the oil would tax the water/radiator/coolant cooling system.

A small Air-2-oil cooler in the passenger vent (which is currently useless anyway) makes the most sense to me.


0.02
 
RYU said:
I'll likely go with a setrab heat exchanger for this but have to piece together the an10 lines and fittings as well as locate a oil filter sandwich plate (SOS sells a nice one but its like 3x more expensive than normal but its nice). I wish a vendor like Dali could put together a side mount kit.
Click to expand...

Canton makes an Honda sandwich plate. You will need to shim the Oil Filter nut so the Oil filter engagement has enough threads.

I also have and extra Comptech adapter with fittings if you are interested.
 

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