I plan to seal the 1" gap between the radiator and supercooler this month. A racer at the track this weekend told me it cooled his IAT's further and gained him 10 hp. That's a good enough endorsement for me to pull the nose and try it. Here's how mine looks. The picture is large so you can zoom if necessary. You can see the damage from the rocks but don't freak completely, a lot of what you see is goo from the blue tape from the track day on sunday. I'm on the stock I/C pump.

Les

 

So you're now faster than Steve and Cooler than him

 

If I finally decide to change the I/C pump I'll use what the big dogs use. (Meziere WP136) You know what, I think my PTE thermostat is sticking. Were having a cold snap and coasting down the mountain my ECT's dropped to 160º. That shouldn't happen. It leads me to believe it may not be opening all the way either.

Les

 

my pte tstat died this spring. replaced with the oem . les cmon 10 hp by sealing the ends with insulation? no way! i used pipe insulation to keep my supercooler from rubbing on the rad. most only use the meziere if they have a trunk tank and need to push the fluid forward to the cm30

 

I'll let you know.

Les

 

As a result of a suggestion from 32Krazy (Steve) I moved the larger H/E as high as I could which resulted in much less overlap between the two and exposed more of the H/E from behind the bumper cover.

2011-12-24_22-17-53_115.jpg

 

I pulled my PTE thermostat today and installed the stock one. The PTE tested perfect. Closes like it should and opens like it should. (hot water on the stove test) My second H/E is coming out too. It's not doing what I wanted it too. I guess next is to figure out how to mount my new fan.

Les

 

I removed the 2nd heat exchanger tonight after looking at my datalogs.

My IAT's would climb around 55 degrees prior to installing the 2nd HE. After installing the 2nd HE my IAT's climbed over 90 degrees. Both datalogs are from 181 pulley only, non-stacked runs.

Single large HE:

Starting IAT: 77F
Ending IAT: 133F
Increase: 56 degrees


Large HE and Factory HE connected in series:

Starting IAT: 75F
Ending IAT: 165F
Increase: 90 degrees

 

After seeing what you guys are expermenting with , I wonder if it would be possible to build a exchanger that would fit behind the bottom 2 vents between foglights , maybe do some rework on the portion that is not opened up .it could be 8 inches tall and s8 to 30 inches wide and fit snug behind the grills ... what do you think ?? i'm really interested in a project to get S/C Cooler , i like the direction you guys are working in ..enjoying this thread...


Howard.

 

My conclusion is that the supercooler is all we need; or more than we need. The bottle neck is the I/C and no amount of extra capacity will change that. The best idea is Jim's. Fans everywhere and if they won't fit, make them fit. I'm glad I tried, I'm glad Grip tried too. Less wasted time for the rest.

Les

 

What's your vector, Victor? Outside temps?

 

Temps were around 50-55F ambient on both accounts. By vector and Victor, are you asking to for a screenshot of the datalogs showing how quickly the temps rise?

 

Ha no I was quoting Airplane. 25 above ambient seems pretty good!

Kinda confirms the stock HE is too restrictive.

 

LOL, I haven't seen Airplane in forever.

 

Because of my "custom" install I initially did not have the stock I/C so mounted 2 after market I/C's and removed the plastic (drilled out the squares) between the 2 lower inlets at the edges for better air flow. I didn't initially have the stock I/C to compare with but now I do and the volume is a little over double for that of the stock I/C and I have 2 8mm fans that are thermal activated at 160 deg. ........seems to keep the temp down and more volume is always better.

 

The CM90 is a big *** pump. It will fit but I think it is overkill. I am about to swap my CM90 for a CM30. I have had the CM90 for 4 or 5 years but it is finally dying.

 

Dammit now you are going to make me uninstall the factory HE that was left inline.

 

Spray water on the fins.

 

Did you add a second pump inline to increase the flow through the system? If so, you may be pushing the coolant too fast through the system and not giving it ample time to be cooled by the air.


...alternatively, if you aren't pushing it fast enough now with the extra volume and twists and turns...the coolant could not be making it through the engine faast enough to cool it.

 

You have to have sufficient flow to make the water turbulent, insufficient flow has the water traveling in a laminar flow.

Turbulent flow has the water sweeping away the layer of water that is slowed by friction that sits against the side walls, these sidewalls are those that are in the cooled or the heated parts of the system. The sidewall layer effectively insulates the inner flowing coolant. The turbulent flow has all the coolant sweeping the sidewall thereby increasing the efficiency of the heat exchange. That means the coolant will pick up more heat and give up its heat faster.

Adding more surfaces, restrictions and bends will slow down the flow as friction and pressure losses increase.

Vane type pumps fall of in the volume moved as the back pressure increases.

You have to maintain the Reynolds number for turbulent flow. I have forgotten most of this but here is the Wiki on it. Reynolds number - Wikipedia, the free encyclopedia