Does this make sense?
Thread Starter
Burning Brakes
Joined: Sep 2005
Posts: 1,078
Likes: 0
From: Santee CA
Does this make sense?
This is what's printed on our new thermostat that we bought from Summit Racing, and is a Mr. Gasket Co. brand:
Does this make sense to anyone else as to why a thermostat, which is rated at the same temperature as the stock thermostat, would have this?
Is there something DIFFERENT about this thermostat that would ONLY qualify it for use on a race vehicle?
I wrote this to Mr. Gasket Co when I got it, but I haven't received a reply back; I can't see any reason for it.
I mean, thermostats aren't something that affects emissions, as far as I can tell...
Does this make sense to anyone else as to why a thermostat, which is rated at the same temperature as the stock thermostat, would have this?
Is there something DIFFERENT about this thermostat that would ONLY qualify it for use on a race vehicle?
I wrote this to Mr. Gasket Co when I got it, but I haven't received a reply back; I can't see any reason for it.
I mean, thermostats aren't something that affects emissions, as far as I can tell...
Melting Slicks
Joined: Aug 2005
Posts: 2,606
Likes: 4
Originally Posted by Sprzout
Is there something DIFFERENT about this thermostat that would ONLY qualify it for use on a race vehicle?
I mean, thermostats aren't something that affects emissions, as far as I can tell...
I mean, thermostats aren't something that affects emissions, as far as I can tell...
That being said...the t-stat temp does affect emissions output. The longer a car takes to reach (optimal emission) operating temperature, the more pollution it spews. So, if you put a 160 t-stat in a car designed to run optimally with a 185 t-stat, you're technically messing with the emission controls.
Anyone who actually knows what they're talking about, please speak up...
Safety Car
Joined: Mar 2005
Posts: 3,503
Likes: 2
From: Raleigh NC
Yes, changing the engine operating temperature changes the emission characteristics of the car and is just as illegal as removing the cats. Up to a $2500 fine (in theory).
I would never put in a 160F. Aside from other problems, a 160F wouldn't allow the EFE valve to open; the EFE valve opens at 180F coolant temperature. There's been plenty of discussion about various t-stat temps on this board.
If the thermostat needs to be replaced, install one with the same temperature rating as the original. Most cars and light trucks since 1971 require thermostats with 192 or 195 degree ratings. Using a cooler thermostat (160 or 180 degree) can increase fuel and oil consumption, ring wear and emissions. On newer vehicles with computerized engine controls, the wrong thermostat can cause major performance and emission problems if the engine fails to reach the proper operating temperature.
I would never put in a 160F. Aside from other problems, a 160F wouldn't allow the EFE valve to open; the EFE valve opens at 180F coolant temperature. There's been plenty of discussion about various t-stat temps on this board.
If the thermostat needs to be replaced, install one with the same temperature rating as the original. Most cars and light trucks since 1971 require thermostats with 192 or 195 degree ratings. Using a cooler thermostat (160 or 180 degree) can increase fuel and oil consumption, ring wear and emissions. On newer vehicles with computerized engine controls, the wrong thermostat can cause major performance and emission problems if the engine fails to reach the proper operating temperature.
Last edited by PhotoVette1; Oct 23, 2005 at 07:30 AM.
Whenever I make a phone order or online to Summit,I must acknowlege that disclaimer....
