running cool
Thread Starter
Cruising
Joined: May 2003
Posts: 13
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From: katy tx
running cool
what is the best thermostat for my crossfire. Right now I have a 195 and my tempture runs about 225. should I go down to a 180 or lower. do you think this will affect proformance.
Racer
Joined: May 2002
Posts: 325
Likes: 0
From: Feenix Az
Re: running cool (82coupe)
It believe you need the higher temperature to get the EFI into closed loop mode. Mine used to run up to 220 frequently until I put in a Dewitt package of aluminum radiator and twin Spal fans.
Dane
Dane
Pro
Joined: Oct 2001
Posts: 621
Likes: 1
Re: running cool (82coupe)
If you are already running above the thermostat opening temp, then a lower temp thermostat won't change anything. You stat is already opening at 195, yet the engine is running up to 225. Opening it earlier won't keep the temperature from continuing to climb, as it won't be open any wider and the flow will be the same. You have to improve the heat transfer. Maybe your radiator is clogged or water pump or fan are malfunctioning.
Le Mans Master
Joined: Feb 1999
Posts: 6,807
Likes: 0
From: Hoosier
Cruise-In III Veteran
Re: running cool (L79vette)
If you are already running above the thermostat opening temp, then a lower temp thermostat won't change anything. You stat is already opening at 195, yet the engine is running up to 225. Opening it earlier won't keep the temperature from continuing to climb, as it won't be open any wider and the flow will be the same. You have to improve the heat transfer. Maybe your radiator is clogged or water pump or fan are malfunctioning.
Former Vendor
Joined: Jan 2000
Posts: 5,593
Likes: 631
From: Brighton
Re: running cool (L79vette)
If you are already running above the thermostat opening temp, then a lower temp thermostat won't change anything. You stat is already opening at 195, yet the engine is running up to 225. Opening it earlier won't keep the temperature from continuing to climb, as it won't be open any wider and the flow will be the same. You have to improve the heat transfer. Maybe your radiator is clogged or water pump or fan are malfunctioning.
Le Mans Master
Joined: Feb 1999
Posts: 6,807
Likes: 0
From: Hoosier
Cruise-In III Veteran
Re: running cool (Tom DeWitt)
:iagree: Can you explain this to the other 10,000 people that don't understand that logic?
While cruising I can watch the temp gauge move from 180 to 185 to 180 on and on. The Dewitts radiator wants to cool the engine lower than the t-stat allows. In stop light traffic it does climb up.
Melting Slicks
Joined: Jul 2002
Posts: 3,128
Likes: 3
From: Deltona (son of Deland and DAYTONA) FL
Re: running cool (Tom DeWitt)
:iagree: Can you explain this to the other 10,000 people that don't understand that logic?
L79Vette; My high flow water pump cooled mine down. I was running at 210-215 around town, 230+ on the highway. Now I am at 160-170 (stat is out right now until I replace expansion tank, had air sucking issues) and maybe 190 on the highway at 3500rpm in 95 degree heat.
Also check your fan clutch. With the engine off, and hot, it should be hard to turn by hand.
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Melting Slicks
Joined: Dec 2000
Posts: 3,407
Likes: 2
From: Carmichael CA
Re: running cool (82coupe)
As others said you can't get your overheating problem down with just a lower T-Stat. You could try a high flow T-Stat. But no matter what you do it should bring the coolant temp up to your crossfire operating temp (I don't know what that is) as soon as possible, and then open up as wide as possible after that to be sure that your computer doesn't add a rich condition due to the engine being too cold.