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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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08-14-2018, 01:53 AM | #15 | |
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couple of degrees is fine if it was like 80c then that's probably not good. |
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08-14-2018, 10:52 AM | #16 | |
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Just checked with my dedicated gauge, check the picture out. If you're hanging out at around that mark your thermostat is probably stuck open. EDIT Disregard the first image I posted. I started the car up and watched the water temperature gauge in relation to the stock cluster. From a cold start to the yellow line in the picture the temp was only 140*F, anything above the line was 140-200*F. The stock gauge would hover at it's half way mark and it would only be 180ish, that extra 20 degrees to 200 didn't move it any farther once it reached half way. Last edited by Trueweltall; 08-16-2018 at 08:50 AM. |
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08-14-2018, 11:06 AM | #17 | |
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What do u mean by stuck open? And how do I fix that? Yeah, my temp gauges look about the same as yours. Sent from my iPhone using Tapatalk |
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08-14-2018, 11:28 AM | #18 |
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You generally just replace the thermostat if you have one that is stuck open. When it gets stuck open it will take forever for your car to hit operating temperature, I had an eclipse with no thermostat that would never get up to temp when driving it in the winter.
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08-14-2018, 03:02 PM | #19 |
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08-14-2018, 03:28 PM | #20 | |
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That was besides the point. The previous installer whom to be remain nameless did a poor job on the thermo wrapping, but if that’s the reason my temperature gauge is showing lower temp then that’s all fine by me. I’m more worry about the thermostats issue mentioned above, and why it is happening now after the new header install (again, not saying that was the reason, but I’m just curious). Sent from my iPhone using Tapatalk |
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08-14-2018, 04:50 PM | #21 | |
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Many people don't realize the effects a tune can have on the car. Just because "it seems to be running just fine", doesn't mean it's running optimally. If anything, the Ace header should be running hotter, in theory; there's a lot more hot exhaust pipe surface area underneath the hood for heat to radiate from. In reality, there's a ton of different factors that all contribute to a potentially lower coolant temp. Another one is the fact that you're making much, much more torque than you did before; you don't have to step on accelerator as much to get the same acceleration. If you're burning less gas to get the same torque, you're naturally going to have less waste heat. Have you noticed a change in fuel economy? |
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The Following User Says Thank You to CSG Mike For This Useful Post: | wparsons (08-15-2018) |
08-14-2018, 05:00 PM | #22 |
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I have not driven much to notice the fuel consumption difference yet. But long story short, I’m all fine with car running cooler whether it’s due to the tune or header, it’s a lot better than the other way around. I just want to make sure it’s not a bad thermostat throwing false reading.
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The Following User Says Thank You to stlgrym3 For This Useful Post: | CSG Mike (08-14-2018) |
08-14-2018, 06:49 PM | #23 |
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The coolant temp sensor and thermostat are completely independent of each other. Your sensors are reading accurately.
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The Following User Says Thank You to CSG Mike For This Useful Post: | wparsons (08-15-2018) |
08-15-2018, 04:38 PM | #24 | |
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If you can see the temperature dropping below half once up to temp, then you most likely have a stuck thermostat. The job of the thermostat is to regulate the engine temp, so if it's fluctuating up and down it's not working properly.
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The Following User Says Thank You to wparsons For This Useful Post: | stlgrym3 (08-15-2018) |
08-15-2018, 06:38 PM | #25 |
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Can you not isolate the thermostat by datalogging an extended idle with the AC on and the engine starting out cold?
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08-15-2018, 10:53 PM | #26 |
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I just did another log after the first revision, this time I did two pulls from 2000-5000 rpm in 3rd gear back to back. I noticed the oil temperature reached upward to 104 degrees toward the end of the pull, is this normal for this kind of test?
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08-16-2018, 08:37 AM | #27 |
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08-18-2018, 10:10 PM | #28 |
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Without an oil cooler? Yes. You'll see higher than that during sustained highway driving.
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The Following User Says Thank You to CSG Mike For This Useful Post: | wparsons (08-19-2018) |
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