Take off your engine cover!
#81
#82
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Burt Gummer (09-11-2016)
#84
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Uncle Fishbits (09-15-2022)
#86
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They won't fit. Different shape and different location on the hood.
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Dwelter (10-09-2016)
#87
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Back on topic - we had our first day of real spring weather here in Adelaide a couple of days ago, after just about the coldest and wettest start to spring in our history, so I whipped the engine cover off.
After a bit of a run yesterday I parked the car in the garage and immediately I felt a wave of heat coming off of the bonnet, so I felt the bonnet and it was much hotter than previously.
If the bonnet is radiating that much heat with the engine cover off I hate to think how much was being trapped by the cover before I removed it.
After a bit of a run yesterday I parked the car in the garage and immediately I felt a wave of heat coming off of the bonnet, so I felt the bonnet and it was much hotter than previously.
If the bonnet is radiating that much heat with the engine cover off I hate to think how much was being trapped by the cover before I removed it.
#88
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If you still have your engine cover in place, next time you get home from a drive go back out to the car ten minutes after you park it, pop the hood, and feel the cover.
#89
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After a bit of a run yesterday I parked the car in the garage and immediately I felt a wave of heat coming off of the bonnet, so I felt the bonnet and it was much hotter than previously. If the bonnet is radiating that much heat with the engine cover off I hate to think how much was being trapped by the cover before I removed it.
Why then would OzXFR's hood give off a "wave of heat" when he removes the cover, but not when he leaves it on? Given Unhinged's measurements, one would expect the opposite.
Last edited by Frenchy; 10-11-2016 at 10:54 PM.
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Uncle Fishbits (09-15-2022)
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This contradicts Unhinged's measurements (see post #30): the hood surface after a drive, 125.6 degrees F with cover and 108 degrees without cover. He took these measurements to answer those who were concerned that the cover might serve as a protective heat shield for the hood paint.
Why then would OzXFR's hood give off a "wave of heat" when he removes the cover, but not when he leaves it on? Given Unhinged's measurements, one would expect the opposite.
Why then would OzXFR's hood give off a "wave of heat" when he removes the cover, but not when he leaves it on? Given Unhinged's measurements, one would expect the opposite.
#91
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This contradicts Unhinged's measurements (see post #30): the hood surface after a drive, 125.6 degrees F with cover and 108 degrees without cover. He took these measurements to answer those who were concerned that the cover might serve as a protective heat shield for the hood paint.
Why then would OzXFR's hood give off a "wave of heat" when he removes the cover, but not when he leaves it on? Given Unhinged's measurements, one would expect the opposite.
Why then would OzXFR's hood give off a "wave of heat" when he removes the cover, but not when he leaves it on? Given Unhinged's measurements, one would expect the opposite.
#92
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If the engine is less hot without the cover, then that means more heat is leaving, presumably through the hood. So the hood being hotter isn't necessarily inconsistent with the engine being cooler.
A coworker points out that just because the top of the engine is cooler, that doesn't mean the engine internals are any cooler, as presumably the coolant temp isn't any different. I don't know enough to comment on that.
A coworker points out that just because the top of the engine is cooler, that doesn't mean the engine internals are any cooler, as presumably the coolant temp isn't any different. I don't know enough to comment on that.
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Uncle Fishbits (09-15-2022)
#93
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DJS wrote: "The hood being hotter isn't necessarily inconsistent with the engine being cooler."
No, DJS, you missed my point entirely. I didn't say that the hood being hotter is inconsistent with the engine being cooler. I said that the hood being cooler (Unhinged's measurements) is inconsistent with the HOOD being hotter (OzXFR's observation). The HOOD can't be both cooler and hotter when the cover is removed.
No, DJS, you missed my point entirely. I didn't say that the hood being hotter is inconsistent with the engine being cooler. I said that the hood being cooler (Unhinged's measurements) is inconsistent with the HOOD being hotter (OzXFR's observation). The HOOD can't be both cooler and hotter when the cover is removed.
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Uncle Fishbits (09-15-2022)
#94
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Uncle Fishbits (09-15-2022)
#96
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You can actually have more heat coming off the hood while the peak temperature is lower. With more circulation under the hood, the temperatures on average could be higher across the entirety of the hood (providing the temp differential for heat dissipation), while the localized temperature just over the engine is less. It would hurt my brain to try to put the calculations down on paper. I'll just rely on empirical observation: The paint ain't peelin' and the wrap ain't bubblin'.
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Uncle Fishbits (09-15-2022)
#98
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The SVR does away with the cover altogether.
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#99
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Uncle Fishbits (09-15-2022)
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