For those playing along at home...it weighs ~4.04 lbs

 

...so if 900 of our readers remove their engine covers, we've just about removed the weight of an entire F-Type from the roads.

 

Took mine off... disappointed to see the cheap plastic crossover pipe in the cooling system. Was hoping it would have the metal one like the XKR.

 

Depends on how may are V8s. Might need to be closer to 1000.

 

on a related topic, I have not been pleased with the design of the hood vents. too obtrusive. Does anyone know if the hood vents from the SVR would retrofit onto the hood of my 2014 V8 S? I like the lower profile and believe they would breath easier. Thanks gentlemen.

 

They won't fit. Different shape and different location on the hood.

 

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.

 

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.

 

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.

 

All I know is that was the first time I noticed a lot of heat coming off the bonnet. When I got out of the car I felt the heat immediately, which had never happened before. Maybe it was 100% due to the ambient temperature inside my garage being a bit higher than previously, who knows. My initial thought was that with the cover removed the heat that would otherwise be trapped by the cover was absorbed by the underside of the bonnet then radiated from the top of the bonnet. Doesn't matter to me, I will continue to run without the cover during spring & summer then consider putting it back on for winter.

 

There could be a number of explanations, including that with cover off more heat is actually dissipating off the surface of the hood over a wider area (and therefore at a lower temperature). Without taking a large number of temperature readings across the entire surface of the hood, it's hard to tell what is going on. I had only measured the temp just above the engine.

 

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.

 

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.

 

I'd agree with that.

 

Tell that to Schrödinger.

 

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'.

 

So the cat's alive!

 

The SVR does away with the cover altogether.

 

lol

 

After 4.5 months in the body shop it is indeed! You never know until you open the box ...