It does not look nice, you can send the hood to me
Dent? I think you should write with BHaha, chances of it arriving to you without a dent!? [emoji23][emoji23]
Sent from my iPhone using Tapatalk
I like the idea of a Naca duct there but as a single vent I think it’s placement doesn’t look right. Perhaps a pair would look better.
If a single vent I think it needs to be more offset.
I can see why it’s positioned where it is, but I think you’re better off letting heat out as opposed to trying to force cool air in. The under bonnet pressures will be quite high from the air coming through the cooling pack from the front.
Some vents with a leading edge gurney will be your best bet for extracting heat I think.
Do you still run an undertray?
As stated, you already have an area under the bonnet of high pressure. So the pressure in the engine bay is likely to be greater than that flowing over the top section of the bonnet. That area by the scuttle and lower screw is quite a low pressure area.
The air is being forced around the front of the car by the frontal area.
From what I’ve seen I this area, unless you have a high scoop aka Subaru style that is up in the airflow and sealed in it pathway you’re better off using that area of low pressure to your advantage and extracting the heat.
Get some thermocouples In there, maybe even some telltail ribbons to see what it’s doing.
Maybe your theory is correct but in practice I don’t think it will work quite how you’re hoping it will.
Guess the simplest way now that the bonnet is fitted is to attach ribbons on the bonnet near and around the vent and watch the airflow. Also get a k type thermocouple in the engine bay and log the temps at various crusing speeds with the vent taped up. Then repeat with the vent untaped.
Without getting some pretty expensive pressure transducers or Pitot tubes I think these will be your most basic tests. Ultimately as long as you get a consistent reduction in temps then it’s doesn’t really matter how you achieve it. [emoji846]
You have the most pressure there at the front of the car. As long as the cooling pack is tight, Ie all rads/coolers close to eachother then you should be good. If you start spacing them from one another then the air spills out the sides. Keep them tight and if possible, box them in.
If you can get the hot air out of the bay and reduce under bonnet pressure then it will only help all the front cooling pack by helping to draw air through the cores.
Hope I’m making sense as I’ve a habit of rambling about this crap. [emoji23]
If there are telltales on the bonnet and they lay flat in the bonnet then you’ll see the air pressure is holding them flat.
If they stand up and dance then the air there isn’t clean and low pressure.
Then try and log some temps if you can. [emoji846]
I miss seeing my fuel light
.1 s quicker)) right?[emoji23][emoji23] I’ve never been a filler!! Love the danger
Sent from my iPhone using Tapatalk
.1 s quicker)) right?
I've not filled up for two years, but then again doesn't need vPower when it's sorn'd[emoji23][emoji23] I’ve never been a filler!! Love the danger
Sent from my iPhone using Tapatalk
-snip-
Best way to start a new year)
Those looks like the shims inside rear caliper, lol!
If you don't want anymore the lsd, tell me)
Nice to see some progress on it mate.
Who did the manifold?