Dewitt Installation Temp Reduction
Thread Starter
Instructor
Joined: Jun 2010
Posts: 108
Likes: 0
From: NE Texas
Dewitt Installation Temp Reduction
We installed my new Dewitt radiator and I do not see a big difference in the temps I still see 212 and it runs down the highway at 185 to 190. Was just wondering what kind of differnece you guys were getting. This car has headers e force cam corsas etc.
Thanks
Thanks
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
Do you know what your fan settings are?
Running a 160 thermostat right?
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
And if the fan speeds weren't adjusted to take advantage of the thicker core's cooling capability he won't see much if any improvement in town. OP...for a reference point...it was 86 here on Friday and I saw between 192-199 all afternoon running around town...nothing higher.
Melting Slicks
Joined: Dec 2002
Posts: 2,897
Likes: 0
From: Lone Star State
So what are you suggesting?
And if the fan speeds weren't adjusted to take advantage of the thicker core's cooling capability he won't see much if any improvement in town. OP...for a reference point...it was 86 here on Friday and I saw between 192-199 all afternoon running around town...nothing higher.
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
Exactly what I said...if his tuner didn't ramp the fan percentage numbers up in the tune then he's not going to see much of an improvement at low speeds. Although the OP has not replied back to confirm, I believe the 212 number he mentioned is in traffic/around town slow speed driving numbers. To take advantage of the larger radiator core in the Dewitts, you need to move air cross it. If you aren't moving air, you aren't cooling the car. If his goal is lower coolant temps at low speeds, he needs to move more air.
Stock fan profile
Fan profile used by a well-known tuner
Fan profile I use..similiar mods to the OP's car
If his fan profile looks anything like the first screen capture then it's pretty easy to see how he could see 212.
Stock fan profile
Fan profile used by a well-known tuner
Fan profile I use..similiar mods to the OP's car
If his fan profile looks anything like the first screen capture then it's pretty easy to see how he could see 212.
Last edited by Motorhead-47; May 1, 2011 at 06:40 PM.
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
Moving to a dual SPAL fan setup is taking it to another level. They move a ton of air but the dual SPAL fan setup sold by Dewitts requires a separate fan controller and wiring harness to support the additional power requirements of two fans. I suspect they also make a lot of noise. That's fine if you need the cooling but I think it's toward the extreme.
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Former Vendor
Joined: Jan 2000
Posts: 5,593
Likes: 631
From: Brighton
As far as the OP not running any cooler I think it was correctly stated that the factory radiator was not maxed out. The new radiator is basically being told to perform the same based on the fan settings and the existing stat.
Le Mans Master
Joined: Dec 2005
Posts: 7,753
Likes: 210
From: North Western Connecticut
I'm running the Dewitt with FI and never see more than 195 degs even idiling in traffic, AC on and ambient temps over 90 degs! That was IMPOSSIBLE to do with the stock rad without FI and maxing out the fans.....
I believe Motherhead has explained your problem and if not the fan settings then something else is wrong. Cruising temps I'm at 180 to 185 regardless of ambient temps even when putting my foot into the charger....
I believe Motherhead has explained your problem and if not the fan settings then something else is wrong. Cruising temps I'm at 180 to 185 regardless of ambient temps even when putting my foot into the charger....
Pro
Joined: Jun 2008
Posts: 672
Likes: 1
Actually we are changing that. We've been wiring the dual fans together and supplying them with a full load plug connection that you can splice directly in the factory wiring. We've made several of these and they seem to be working just fine.
As far as the OP not running any cooler I think it was correctly stated that the factory radiator was not maxed out. The new radiator is basically being told to perform the same based on the fan settings and the existing stat.
As far as the OP not running any cooler I think it was correctly stated that the factory radiator was not maxed out. The new radiator is basically being told to perform the same based on the fan settings and the existing stat.
Thanks
Thread Starter
Instructor
Joined: Jun 2010
Posts: 108
Likes: 0
From: NE Texas
Good Stuff ......Thanks guys we have turned up the fans and I NEVER see any temps I worry about. Also the recovery is lots faster (cooling off after moving) I am happy with the fans and was needing a fan profile. Thanks again motothead 47 
you can't beat old Air Force hands Hey guys also what additives do you suggest and what results have you seen from them. I'm running water and fresh antifreeze at this point. BTW I still love this thing after 1500 miles are so with no problems. I would take this car anywhere and I do.
-fate-
you can't beat old Air Force hands Hey guys also what additives do you suggest and what results have you seen from them. I'm running water and fresh antifreeze at this point. BTW I still love this thing after 1500 miles are so with no problems. I would take this car anywhere and I do. -fate-
Former Vendor
Joined: Jul 2008
Posts: 4,327
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From: Oxnard SoCal www.aacorvette.com www.superchargersuperstore.com
Good Stuff ......Thanks guys we have turned up the fans and I NEVER see any temps I worry about. Also the recovery is lots faster (cooling off after moving) I am happy with the fans and was needing a fan profile. Thanks again motothead 47 you can't beat old Air Force hands Hey guys also what additives do you suggest and what results have you seen from them. I'm running water and fresh antifreeze at this point. BTW I still love this thing after 1500 miles are so with no problems. I would take this car anywhere and I do.
-fate-
you can't beat old Air Force hands Hey guys also what additives do you suggest and what results have you seen from them. I'm running water and fresh antifreeze at this point. BTW I still love this thing after 1500 miles are so with no problems. I would take this car anywhere and I do. -fate-
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
Good Stuff ......Thanks guys we have turned up the fans and I NEVER see any temps I worry about. Also the recovery is lots faster (cooling off after moving) I am happy with the fans and was needing a fan profile. Thanks again motothead 47 you can't beat old Air Force hands Hey guys also what additives do you suggest and what results have you seen from them. I'm running water and fresh antifreeze at this point. BTW I still love this thing after 1500 miles are so with no problems. I would take this car anywhere and I do.
-fate-
you can't beat old Air Force hands Hey guys also what additives do you suggest and what results have you seen from them. I'm running water and fresh antifreeze at this point. BTW I still love this thing after 1500 miles are so with no problems. I would take this car anywhere and I do. -fate-
Glad to have been of some assistance.
Burning Brakes
Joined: Jun 2008
Posts: 1,214
Likes: 3
From: CA
You'll hear people tell you that straight distilled water with "Water Wetter" provides the best cooling..zero antifreeze. I can't confirm this though and you'd still have to account for winter temps if you went that route. It would be easy enough to experiment with. Distilled water from the grocery store and "Autozone" has Water Wetter on the shelf. I run the distilled water/Water Wetter combo in the supercharger cooling loop.
Glad to have been of some assistance.
Glad to have been of some assistance.
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
I was about to reply with "dunno" but quickly found this on their web site...
"Red Line WaterWetter® is designed to provide
improved metal wetting and excellent corrosion inhibition
when added to plain water or a glycol coolant."
Here is the link to the full write-up... http://www.redlineoil.com/content/fi...ech%20Info.pdf