Overheat when under boost
05-21-2011, 03:57 PM
#21
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I had that problem on my old red turbo miata (you're not the guy who bought it are you?), except it waited until about 80mph on an 80* day before it would start to overheat. I'm pretty sure it was because I took out the front tray thing that bridged the gap between the "mouth" and the bottom of the radiator, so any air was able to just go down under the radiator at speed. I would add undertrays first, then see if anything needs to be fixed after that.
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05-23-2011, 02:25 AM
#22
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The retarded timing/engine overheat is engine specific, most of the temp that leaves the head leaves via the contact between the exhaust valve and the seat, so yes retarding it will increase exhaust valve temp, and then its transfered through the seat when its seated so it will increase temp. Its very head design specific whether this will overheat an engine though. Although I apologise that my statement was so blanket non specific. I usually really try not to do that.
Dann
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05-23-2011, 11:13 PM
#23
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I had that problem on my old red turbo miata (you're not the guy who bought it are you?), except it waited until about 80mph on an 80* day before it would start to overheat. I'm pretty sure it was because I took out the front tray thing that bridged the gap between the "mouth" and the bottom of the radiator, so any air was able to just go down under the radiator at speed. I would add undertrays first, then see if anything needs to be fixed after that.
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