any benefit in taking the engine cover off?

[sams2k]

i know its a little bit crazy idea, do you think that taking the oem engine cover off will benefit in relesing heat from the engine and engine compartment?
anyone ever tried it?

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[Rocksandblues]

Yes

 

[razorlab]

I take mine off at the track. Jusy know the engine and all the sounds are much louder without the cover.

 

[PikkaGTR]

On the f30 340i it did drop under hood temps
It beware your supra will turn into a ticking diesel engine

 

[Cosmok]

Since there are no heat extraction vents on the hood, I would guess removing the cover will yield a very small temp decrease.

 

[Sigg]

Yes it actually does affect IAT Temps, I notice IATS about 2-4 degrees lower on any given day in my experience with the cover off. This is just experimenting with it a couple times.

 

[sams2k]

thank you all for the great comments and information
so its decided, i will keep the engine cover in the house from now.

 

[calmeda1]

It beware your supra will turn into a ticking diesel engine

I removed the cover a few weeks ago, just out of curiosity, and I was surprised by how loud the ticking was

 

[rwense]

I can echo the others. I took mine to an autocross event yesterday and did a few runs with it on vs off. I noticed IAT and oil Temps were a couple degrees cooler. But yes the ticking is LOUD. Reminded me of my ND2.

 

[domingo]

Any benefits of cutting cover over the manifold? Keep cooler and ticking quiet?

 

[sams2k]

i have been driving without the cover for more than a week
yes, there is more noise and ticking sound but not so bad
i think i see a little bit cooler temps in my IAT according to the gauge on the JB4

 

[PerformanceSound]

An engineer once told me that the reason the engine covers all became this cheap plastic looking ornament is because in the event of a fire, it’s designed to melt over the engine and suppress the fire. They use to be insulation panels attached to the underside of the hood (like the MKIV’s), but now they are the engine covers. Someone correct if this is not true.

 

[Rocksandblues]

An engineer once told me that the reason the engine covers all became this cheap plastic looking ornament is because in the event of a fire, it’s designed to melt over the engine and suppress the fire. They use to be insulation panels attached to the underside of the hood (like the MKIV’s), but now they are the engine covers. Someone correct if this is not true.

I can’t see that as legit

as modern engines have more and more plastic bits and wires I believe covers to be for Beauty and noise insulation

plastic will catch fire and burn. Will NOT melt and put a fire out

 

[PerformanceSound]

I can’t see that as legit

as modern engines have more and more plastic bits and wires I believe covers to be for Beauty and noise insulation

plastic will catch fire and burn. Will NOT melt and put a fire out

I don’t think it puts out the fire, I think it manages it better to eventually put it out. Basically buying you time. Again, this is what an engineer told me….not official statement from Toyota.

 

[Rocksandblues]

Don’t know how a plastic cover that is flammable would put out a fire. If anything it is combustible fuel.
Tell engineer he is fired

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