DeWitt Radiator Install Update
Thread Starter
Melting Slicks
Joined: Oct 2004
Posts: 2,662
Likes: 8
From: Knoxville Tennessee
DeWitt Radiator Install Update
I finally got around to "burping" the new rad. I had drilled a small hole in the t-stat so it filled with no problems and had no air pockets. I took the car on a short drive thru the small town I live close to. Normally when I get to the first red light the car is at 198 degrees no matter what the outside temp is. It was running at 174. Before the DeWitt install the car would run from 198 to 205 during my loop around town. Now the temp never went above 174. Now I did have a rad that was at least 25 per cent clogged but I still believe the DeWitt rad helped to lower the operating temp. I won't be bale to see what it will run at until the temps get into the 180 to 190 range. Then I can see how the DeWitt helps during the summer heat. I firmly believe this was a worthwhile swap and a very easy one too!
Bernie
Bernie
Instructor
Joined: Mar 2002
Posts: 247
Likes: 0
From: las vegas nv
you will ove it. i put one in my lt4 when i first got it. i live in las vegas, where it tends to get a bit warm in the summer. car has never been over 228 in the heat of the summer with the a/c going full tilt boogie. toms a good guy too. good upgrade
Team Owner
Joined: Sep 2001
Posts: 62,137
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
The DeWitt will really show a difference at cruise, as the temperatures will drop alot faster once you get moving. At idle and in town, it'll still heat up into the 200s just not as fast.
Le Mans Master
Joined: May 2005
Posts: 7,336
Likes: 2,265
From: Central Maryland
If you reprogram your fan-on/off settings, that DeWitt unit should keep your C4 running much cooler at all times.
My '94 runs in the 170s this time of year with a fresh OEM radiator in it and the fan-on/off settings reflashed to 190/180 primary, 195/185 secondary. Even in the dead of summer, mine runs much cooler than it ever did with the stock 'stat and fan settings.
Be well,
SJW
My '94 runs in the 170s this time of year with a fresh OEM radiator in it and the fan-on/off settings reflashed to 190/180 primary, 195/185 secondary. Even in the dead of summer, mine runs much cooler than it ever did with the stock 'stat and fan settings.
Be well,
SJW
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
When the weather warms up you can simply unplug the connector to the A/C pressure line to bring on the fan all the time. That should be a good test to see how much a fan sw would help with coolant temp control.
Le Mans Master
Joined: May 2005
Posts: 7,336
Likes: 2,265
From: Central Maryland
Racer
Joined: Jan 2007
Posts: 416
Likes: 2
From: Aquilla TX
Gee He buys a Dewitt Rad. and I am just fixing to get a 160 stat and drop the fans down a bit. Hope mine works cause I sure cant afford a Dewitt, enjoy your vette. First warm day here in Texas, 80 at least, my 95 vette ran at 225 in 35 degree weather. Gotta do something without buying a new rad.
Cruizer
Cruizer
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Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Gee He buys a Dewitt Rad. and I am just fixing to get a 160 stat and drop the fans down a bit. Hope mine works cause I sure cant afford a Dewitt, enjoy your vette. First warm day here in Texas, 80 at least, my 95 vette ran at 225 in 35 degree weather. Gotta do something without buying a new rad.
Melting Slicks
Joined: Dec 2004
Posts: 2,954
Likes: 2
From: Obama=death for America
Safety Car
Joined: Aug 2006
Posts: 4,147
Likes: 452
From: Port St. Lucie West Florida
Bernie,
Is that a stock 180 stat. that you put in when you replaced the new radiator.Your temp is low.I know you had mentioned on an earlier thread that you will replace stat with a 160.I was just curious to see if the temp will be reduced using the dewitts rad.with stock stat.
thanks
Is that a stock 180 stat. that you put in when you replaced the new radiator.Your temp is low.I know you had mentioned on an earlier thread that you will replace stat with a 160.I was just curious to see if the temp will be reduced using the dewitts rad.with stock stat.
thanks
Team Owner
Joined: Sep 2001
Posts: 62,137
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Bernie,
Is that a stock 180 stat. that you put in when you replaced the new radiator.Your temp is low.I know you had mentioned on an earlier thread that you will replace stat with a 160.I was just curious to see if the temp will be reduced using the dewitts rad.with stock stat.
thanks
Is that a stock 180 stat. that you put in when you replaced the new radiator.Your temp is low.I know you had mentioned on an earlier thread that you will replace stat with a 160.I was just curious to see if the temp will be reduced using the dewitts rad.with stock stat.
thanks
