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When you get the Dewitts radiator, do you need to retune the car?
I believe you want to reprogram the fans to come on earlier, like 195 ish. For high level racing, I would run two separate coolant packages. Run straight distilled water with a surfactant like Wetter Water. When you are done racing, drain in out and save that mix. Re-install the factory 50/50. I don't think it would help much but you could also go with a lower thermostat to start cooling earlier. Those items shouldn't void any warranty.
Last edited by Tom@Dewitt; Jul 8, 2015 at 05:25 PM.
Summit is selling for $649.97. Were they running a sale when you purchased it? Did you go w a lower degree thermostat too?
thanks,
Jim
They must have been,i did put in a 180 therm from ligenfelter and 30/70coolant to water ratio,the car runs in cooler mornings around 180 to 185,in 97 degree heat at 60 mph it runs around 192,in traffic at 97 it stays under 200, I have not been to a road track with this set up yet,i do not have a tune or a fan tune,i have a fasterproms intercooler tank and I removed the ducting on top of the radiator,also removed the rubber by the winshield.i would not go any cooler on the therm when it is cold outside the car will not be hot enough to burn all the condensation and contaminants.
They must have been,i did put in a 180 therm from ligenfelter and 30/70coolant to water ratio,the car runs in cooler mornings around 180 to 185,in 97 degree heat at 60 mph it runs around 192,in traffic at 97 it stays under 200, I have not been to a road track with this set up yet,i do not have a tune or a fan tune,i have a fasterproms intercooler tank and I removed the ducting on top of the radiator,also removed the rubber by the winshield.i would not go any cooler on the therm when it is cold outside the car will not be hot enough to burn all the condensation and contaminants.
Thanks Marc. Im leary of the factory radiator so this looks like a great addition. Your temps look great too.
2 hours very simple direct bolt in ,there are two spring loaded plastic pieces on top of the radiator that hold the a/c condenser just push in and lift the condenser,it slides into 4 slots on the dewitts radiator,refill let idle with open cap and fill as needed to get all the air out,let it run awhile with cap open it will not get to hot and overflow.
2 hours very simple direct bolt in ,there are two spring loaded plastic pieces on top of the radiator that hold the a/c condenser just push in and lift the condenser,it slides into 4 slots on the dewitts radiator,refill let idle with open cap and fill as needed to get all the air out,let it run awhile with cap open it will not get to hot and overflow.
Did you have to remove the front fascia that covers the bumper or can you remove it from the engine compartment ?
I call DeWitt last week, the sales person said they make only one radiator for the C7, regardless of Base , Z06, M7 or A8 (A8 does not have cooler lines going in to radiator)
Model: 1139114M
Ummmm...not to be a jerk, but it's YOUR name on the company, don't you know what they are?
Um.....not to be a jerk.....
I understand Toms comment to mean the OEM rads are one style for base Stingray and second style for Z51/Z06. And the only difference is the placement of the drain plug.
I understand Toms comment to mean the OEM rads are one style for base Stingray and second style for Z51/Z06. And the only difference is the placement of the drain plug.