Has anyone had problems with Entropy aluminum radiators????

[speED]

67 Camaro, 454, 600HP. Just installed Entropy aluminum radiator with dual fans(3000 CFM) over the winter. I'm running a constant 200 - 205 degrees F while driving(both highway & idle) in 60 degree weather. Prior to this set-up, I had a 4 core copper radiator with a factory fan and shroud which would run these temperatures only on 90 degree summer days. Starting to feel as though I wasted my money!!!!!!!!!!

[ProdigyCustoms]

I quite selling them because of persistent overheating issues.

3000 CFMs? What fans did it come with? It would need high performance 12s to get 2900 CFM, and I have never seen dual 13s on one of their radiatorspost a pic.

[speED]

I quite selling them because of persistent overheating issues.

3000 CFMs? What fans did it come with? It would need high performance 12s to get 2900 CFM, and I have never seen dual 13s on one of their radiatorspost a pic.

This is part of their ad on Amazon "This core is 2 inches wider than the standard 22-1/2 inch wide core small block radiator and employs 18 fins per inch versus 14 on most everybody else's small block and big block radiator. This bolts in directly - no holes to drill or a trip to the hardware store for a parts hunt. Also include is the aluminum shroud with high powered 11.5" paddle blade fans (not the cheap lower powered fans) delivering a TRUE 3000 CFM. Together, they pull 35-40 amps (check the current rating on the cheapy fans that claim to pull high CFM). This unit features all aluminum construction, a nocklok forced nitrogen brazed core, two rows of 1.00" cooling tubes, precision TIG welded construction through out, strong 6061 hose connections, brass drain **** and overflow connections."
I believe when I bought it off of E-bay they also claimed a few horsepower #'s which made me feel comfortable. I know I also checked the forum before purchasing and I thought everyone who used them was happy. Obviously I tried to save a few bucks and I'm going to pay twice for it, what I need to focus on is fixing the situation. Frank, what do you have to fit my car? Should I just give you a call - would that be easier?

[ProdigyCustoms]

I cannot find any 11.5 fans. They are most likely 11s which a pair will pull 2600 or so. Which in many cases is enough but for a water heater big block, prolly not.

Our standard F body set up runs dual 13s and pulls 3490. I am building one now for a 598CI water heater with dual 16s pulling 4800CFM. It requires relocating the battery to the trunk, opening the core opeing in the core support, and some redrilling. I will do a little install feature on it when we do it.

Our set ups are a lot more expensive the what you have, but everything about them is a much higher level of components. Your looking at $900 or so for radiator, fans and built in shroud.

[speED]

Update:

The entropy shroud does not allow enough airflow while cruising. I removed the shroud and the temp dropped 45 degrees.

[dhutton]

Just a thought but did you reverse the fan connections? I think that might cause some of what you are seeing...

[speED]

Just a thought but did you reverse the fan connections? I think that might cause some of what you are seeing...

I checked the fan direction immediately after installing. In fact, I also purchased there wiring harness.

[speED]

Update: I had some difficulty on my end contacting Entropy radiators. Now with them being aware of my situation they are also helping in providing a solution. Seeing that other members of the forum have not responded with negative comments I do not want to give anyone the wrong opinion about their product.

[speED]

Update: The fan wiring on 1 harness was incorrect. Whoever provides the wiring harness for Entropy accidently confused the 2 wires on 1 of the weather pack connectors. When I checked the fan rotation I must have only checked the one fan. The harness is also covered with wire loom so visually I did not see when plugging the weather packs together. With shroud and fans installed engine temp is at 175 in 50 degree weather while running down the highway. I'm still convinced the shroud obstructs alot of air flow on the highway, since without it i was running at 155-160. At idle the fans come on at 195 and cool engine down to 170-175.

[poboyracin]

With shroud and fans installed engine temp is at 175 in 50 degree weather while running down the highway. I'm still convinced the shroud obstructs alot of air flow on the highway, since without it i was running at 155-160. At idle the fans come on at 195 and cool engine down to 170-175.

I've been researching this a lot the last couple days and I am also convinced that the aluminum shrouds inhibit air flow at speed. Not on just Entropy's shrouds but all of them that use 11" or so fans. Maybe the bigger fans won't have this problem. Many OEM electric fan shrouds use rubber flaps to let the air pass through the core at cruise. The flaps are closed at idle and low speeds though. Spal also uses them on their dual 11" fan combo.

I'm about to buy the Entropy kit with electric fans and I will try it first without flaps and then I will add flaps across the top and bottom to see if it makes a difference. Spal sells the flaps here http://www.spalusa.com/store/main.as...&item=30130012

[speED]

poboyracin,

The quality of the Entropy radiator is excellent. In fact, Tony(owner) mentioned to me that for my application he even has one with 1.25 in. tubes. You may want to call him or email first. Thanks for the link for the flaps, I'm actually in the process of fabricating my own design flapper. My car is not a trailer queen but I cannot get myself to put that ugly flap(my opinion) on the shroud. I have a pretty good design which I will post when done.

[poboyracin]

I'd be interested to see your flap design. I agree the rubber flaps aren't pretty but it's simple.

[speED]

I'll post pics when done.

[Z06vet]

I am just finishing up my build & have been driving around on short trips both highway & stop & go. We have had temps 70-85 in the last 2 weeks. Fan 1 comes on at 185 and fan 2 at 195. I have not gone over 185/190 at all. Not much to go on, but we'll see what happens when the AC is up & running, 95 degrees, ac on, in traffic. I have their LS1 rad/fan setup. My computer is controlling the fans. If I have it wired correctly, the computer should turn on fan 2 as soon as the AC is turned on.

[68sixspeed]

Regarding the flaps, I don't think they are needed. I have a 23" (big block sized) Afco aluminum radiator, two 1" rows in it with their full shroud which has a single ~2000cfm fan, Last few years I ran a 195 thermostat, it would run right on that, maybe 205 in traffic in the summer. This year I dropped back to the 180 thermostat, just ran the RTTS track day and granted it was cool but it never went over 185 at speed on the track, no trouble during autocross etc either. That dual fan setup looks nice, I think you'd be fine with that w/o flaps.

[speED]

68sixspeed,

The flaps may not be needed. I just know that the shroud is a 50% restriction and it runs 10-15 degrees cooler without it. I would prefer the engine to run as cool as possible and fine tune the temperature range based on thermostat selection.

[speED]

Update!

I performed a test yesterday in 50 degree weather. I tested the car three different times:
Test 1: full shroud - engine ran at 175 degrees on the highway.
Test 2: drilled 10 2" holes into shroud, 5 holes above fans, 5 holes below fans - engine ran just below 170, approximately 168.
Test 3: no shroud - engine ran at 145 degrees.

These full shrouds are really reducing the radiators cooling capacity according to my tests!!

[poboyracin]

If mine will stay at 180 all the time, I'm good. I don't want to run under that.

[speED]

Update!

Cooling system is working great. Entropy replaced my 2-1" core radiator with a 2-1.25 core. I also fabricated a new fan shroud for more airflow. In 88* weather, driving for 1 hour, engine temp fluctuated between 175* - 190*.

[Chad-1stGen]

Update!

I performed a test yesterday in 50 degree weather. I tested the car three different times:
Test 1: full shroud - engine ran at 175 degrees on the highway.
Test 2: drilled 10 2" holes into shroud, 5 holes above fans, 5 holes below fans - engine ran just below 170, approximately 168.
Test 3: no shroud - engine ran at 145 degrees.

These full shrouds are really reducing the radiators cooling capacity according to my tests!!

Sounds like Entropy stood by their product.

Interesting on the fan tests. Thought something doesnt make sense. Why are you seeing such cold temps with no shroud. Are you not running a thermostat? If you are running a thermostat it should be capable of keeping the engine at temp.