03-11-2016, 11:15 AM | #309 |
Drives: 2014 Camaro 1SS/RS A6 Join Date: Jun 2014
Location: NC
Posts: 119
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For what it's worth... results of semi-official GM testing below.
With help from Chevrolet (who built and own the modified 2015 Camaro SS being tested), Grassroots Motorsports was able to show how actual oil temperatures compare with those indicated on the factory 4-pack gauge. Testing was performed using the same equipment GM uses during their own testing (literally the same - GM sent it to them). This testing was done at VIR at full bore with track times in the 2:12s, and since I was present that July weekend with my own Camaro, I can verify that ambient temps were HOT. Note that the car in question is STOCK in terms of the oil system and DOES NOT have an aftermarket oil cooler. Special thanks to Grassroots Motorsports for allowing me to share the attached pdf with the forum, and be sure to check out summaries of the other stories on their 2015 Camaro SS project track car here. (Full stories are available in back issues.)
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Chris Werner
Author, "How to Rebuild GM LS-Series Engines" Contributing Editor, GM High-Tech Performance (1998-2014) |
03-11-2016, 11:24 AM | #310 | |
Drives: 11 SW SYNERGY SERIES/14 1SS 1LE Join Date: May 2012
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Quote:
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03-11-2016, 11:40 AM | #311 |
Drives: 17 SS 1LE, 14 Yukon Denali Join Date: May 2015
Location: Austin, TX
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Can't see your pic on iPhone w tapatalk
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03-16-2016, 07:54 PM | #312 | |
Drives: ‘13 1LE Join Date: Jul 2013
Location: Earth
Posts: 3,904
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"Our Ultimate Track Camaro SS hit the track again recently, and it’s holding up as well as ever. When we left off last time, we were adding heavier oil and installing a mechanical thermocouple, because we were seeing oil temp readings of nearly 320 degrees (or more) on the factory gauge. Turns out that was a false alarm. Rather than an actual thermocouple gauge to measure oil temperature, this Chevy uses a computer algorithm that takes into account various parameters– ambient temps, rpm, load, throttle position and a zillion others–to simulate what it thinks the oil temperature must be. That’s right, instead of measuring the oil temperature, it basically measures everything else and uses that data to model the temperature. Chevy says the system works great–except under occasional weird circumstances, when it doesn’t. Since this Camaro sees 90 percent of its on time at full throttle, we’d say that counts as weird. So Chevy sent us a mechanical gauge and a thermocouple that we installed before our Ultimate Track Car Challenge event at VIR. The result: nearly ideal oil temps. Readings ranged from about 275 to 285 degrees in the pan, which we can completely live with. In the spirit of monitoring even more parameters, we also installed a cool little device from Auto Meter called a DashLogic. Plugged into the OBDII port, the DashLogic hijacks the driver info center in between the tach and speedo and lets you display custom info from the OBD system– stuff like steering angle, throttle position and timing. This sub-$300 device installs in about a second and provides a meaningful service, so we call it a big win." |
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03-19-2016, 09:29 AM | #313 |
Drives: 2010 2ss red LS3 Join Date: Aug 2011
Location: perkasie pa
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wernergmhtp; What issue of GRMS is that? I think I am missing that important issue! Thanks!
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03-21-2016, 10:26 AM | #314 |
Drives: 2014 Camaro 1SS/RS A6 Join Date: Jun 2014
Location: NC
Posts: 119
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It's the December 2015 issue but there is some more discussion of the oil temperature issue, and their process for investigating it, in the November 2015 issue.
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Chris Werner
Author, "How to Rebuild GM LS-Series Engines" Contributing Editor, GM High-Tech Performance (1998-2014) |
03-24-2016, 05:36 PM | #315 |
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So what I'm gathering from this is that a stock Camaro ss keeps a 285 degree oil temp? How can we display actual oil temp on the 4 gauge cluster instead of the calculated temp?
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03-24-2016, 09:37 PM | #316 |
Drives: 14 1LE Join Date: Mar 2013
Location: Spokane, WA
Posts: 1,567
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There's not a way to have it display anything other than what the computer outputs to the gauge. There may be a way to bypass the computer and have the electronic signal from the sender go directly to the gauge, but I Haven't seen anything along those lines yet. Most just go simple aftermarket gauges.
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04-05-2016, 11:59 AM | #317 | |
Drives: 2020 ZL1 1LE Join Date: Sep 2012
Location: Austin, Texas
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Quote:
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2020 ZL1 1LE [Moroso SC Expansion Tank, otherwise stock]
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04-05-2016, 12:04 PM | #318 |
Cadillac Service Manager
Drives: 2014 Camaro 1SS, 1LE, NPP, RECAROS Join Date: Jun 2013
Location: Indiana
Posts: 672
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A MUST READ for Oil Temps for Tracking
I run a stand alone oil temp sensor with a digital gauge and have seen temps at 305 on a stock LS3 running a small cooler. After adding a 2nd cooler I didn't see temps above 285. I don't know how accurate an external engine block oil drain plug temp would be in relation to the actual oil temp, and from what the article states and show that's where they took their readings from.
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04-05-2016, 12:44 PM | #319 | |
Drives: 2014 Camaro 1SS/RS A6 Join Date: Jun 2014
Location: NC
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I'm not sure there is a way to measure "actual oil temp" because clearly, not all 8 qts are at the same temperature at the same time. Of course the temperature in the main oil gallery will be different from the temperature of the oil sitting on top of the heads, which will also be different from the temp of the oil in the pan. Is it the maximum temperature that matters? The amount of time spent at max temp vs. minimum temp? I'm certainly not saying a given method of measurement is wrong. I'm just saying that clearly, GM Powertrain engineers thought about some of these questions before sending GRM one of their own oil drain plug thermocouples that they use in their own testing.
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Chris Werner
Author, "How to Rebuild GM LS-Series Engines" Contributing Editor, GM High-Tech Performance (1998-2014) |
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04-05-2016, 01:00 PM | #320 | |
Cadillac Service Manager
Drives: 2014 Camaro 1SS, 1LE, NPP, RECAROS Join Date: Jun 2013
Location: Indiana
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Quote:
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04-05-2016, 06:07 PM | #321 |
A MUST READ for Oil Temps for Tracking
I took a bit of a lead from the Z06 guys and put in a cooling duct aimed at the factory oil cooler. Running it this weekend but it's supposed to be cool so it won't be much of a test.
2014 ZL1 Last edited by MTCobra; 04-05-2016 at 06:31 PM. |
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04-06-2016, 01:41 PM | #322 |
Drives: 14 1LE Join Date: Mar 2013
Location: Spokane, WA
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Not sure how the Camaro6 is with its temps but they didn't seem to address what most see as a oil temp problem in the introduction of the C7 either. I don't think GM sees a problem with Camaro's oil temps. An oil temp problem is too easy for the OEM to come up with a solution, they added a trans cooler on the 1LE, why not throw on a oil cooler as well? It isn't a cost issue. The price of an oil cooler is irrelevant in the big picture, especially if it's critical. I'm sure GM is on the cutting edge of oil technology and even I've seen many reports that 300 is not an excessively hot running temp for quality oils nowadays. Many oils claim they are capable at temps into the 400 range. My own oil reports show no indication of thermal related issues when it's spent significant time at 270-300. It may be time to rethink this as a norm and not as an issue.
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