why get a 160 stat when getting a tune???
Drifting
Joined: Jul 2003
Posts: 1,796
Likes: 1
From: Annandale VA
Benefit is that power reduction at high operating temps is avoided.
There are many threads on this topic, including this latest one:
http://forums.corvetteforum.com/show....php?t=1505921
There are many threads on this topic, including this latest one:
http://forums.corvetteforum.com/show....php?t=1505921
Last edited by HITMAN99; Sep 27, 2006 at 09:08 AM.
Drifting
Joined: Jul 2003
Posts: 1,796
Likes: 1
From: Annandale VA
I edited the wording slightly for clarification.
What it means is that when the ECM detects operating temps that are much over 200 degrees, it starts cutting back on timing to reduce the risk of preignition and pinging. This seems to be expecially true for C6's. This timing retard reduces power. Track and dyno results show that optimal power is usually achieved around 185-190 degrees.
What it means is that when the ECM detects operating temps that are much over 200 degrees, it starts cutting back on timing to reduce the risk of preignition and pinging. This seems to be expecially true for C6's. This timing retard reduces power. Track and dyno results show that optimal power is usually achieved around 185-190 degrees.
Drifting
Joined: Jul 2005
Posts: 1,533
Likes: 0
From: az
Originally Posted by jesse12804
I heard somewhere that they turn the oil to sludge in a hurry!!
http://forums.corvetteforum.com/show....php?t=1431370
Racer
Joined: Aug 2005
Posts: 449
Likes: 68
Originally Posted by jesse12804
What's the benefit???drawbacks???I'm not crazy about those,and I heard somewhere that they turn the oil to sludge in a hurry!!
I would go for the 160 degree. The car will then run in the 180 degree range
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Team Owner
Joined: Dec 2003
Posts: 21,841
Likes: 140
From: When all is said and done... there is a hell of a lot more said than done. Riverside,Texas
St. Jude Donor '05 thru '26
Originally Posted by baf2000_1
I would go for the 160 degree. The car will then run in the 180 degree range
Thanks.
Drifting
Joined: May 2005
Posts: 1,302
Likes: 1
From: Tomahawk WI
Originally Posted by jesse12804
What's the benefit???drawbacks???I'm not crazy about those,and I heard somewhere that they turn the oil to sludge in a hurry!!
None whatsoever, this is an urban corvette myth. That people believe this myth is an ongoing source of humor for me.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Originally Posted by cbrf4i1
Not squared. 100% false.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Originally Posted by ben dover
Once the thermostat opens - it's open. How does a lower initial opening temp change the running temp?
Thanks.
Thanks.
These running temps pull no timing. The stocker at 230 it pulls 4 degrees under load. 212 is where the freak show begins.
Beating on it regularly, I rarely see over 200 and that is only in the summer at a traffic light.
While engineers will readily state the design of an aluminum block motor likes heat soak, there are rarely textbook examples of anything in life. The software engineers got to the car and used the tuning to counter any benefit there would be from heat expansion/soak.
Race Director
Joined: May 2001
Posts: 15,323
Likes: 2,077
From: Guelph, Ontario
Your oil will not turn to sludge by running a cooler thermostat, as you will still find that your oil temps will climb above 200F when driving hard. Even if your oil temps stayed below 180F you would not get a buildup of sludge as long as you don't do tons of short trips.
Drifting
Joined: Sep 2004
Posts: 1,551
Likes: 4
From: Livingston Texas
Simply adjusting the fans will make a big difference in the temperature that your car operates. Mine has the stock stat and the fan settings tuned. As you can see by the below graph the temps stay very consistent. I rarely see over 200* and it normally runs right at 195*.
The below graph is over a 20 minute time span with four WOT runs. Also notice there is around 10 minutes of traveling at less than 15 mph without an increase in ECT.
I included the intake air temperature to give an idea of the weather conditions. It was roughly 85* at the start of the run, cooling to around 76* by the end.
I know I didn't answer your question but I hope you find this extra information helpful.
The below graph is over a 20 minute time span with four WOT runs. Also notice there is around 10 minutes of traveling at less than 15 mph without an increase in ECT.
I included the intake air temperature to give an idea of the weather conditions. It was roughly 85* at the start of the run, cooling to around 76* by the end.
I know I didn't answer your question but I hope you find this extra information helpful.
Drifting
Joined: May 1999
Posts: 1,370
Likes: 12
From: Garwood NJ
Originally Posted by SpinMonster
It takes time to cool. Earlier open lets it cool faster. If you are asking because you dont beleive it runs cooler thats easy to demonstrate. My car runs at 176 moving and 192 at idle.
These running temps pull no timing. The stocker at 230 it pulls 4 degrees under load. 212 is where the freak show begins.
Beating on it regularly, I rarely see over 200 and that is only in the summer at a traffic light.
While engineers will readily state the design of an aluminum block motor likes heat soak, there are rarely textbook examples of anything in life. The software engineers got to the car and used the tuning to counter any benefit there would be from heat expansion/soak.
These running temps pull no timing. The stocker at 230 it pulls 4 degrees under load. 212 is where the freak show begins.
Beating on it regularly, I rarely see over 200 and that is only in the summer at a traffic light.
While engineers will readily state the design of an aluminum block motor likes heat soak, there are rarely textbook examples of anything in life. The software engineers got to the car and used the tuning to counter any benefit there would be from heat expansion/soak.
IMO, the engineers try to get the last bit of engine efficiency = (better MPG) with a hotter block, but power suffers on a stock cooling system LSX as a result. My experience has been that low 180s is the sweet spot for most NA LSXs and with a 160 stat and proper fan operation they run in the low 180s with the 160 stat.
Julio