Siting engine intakes for aero pressure

Make the most of the free pressure available to push air into the engine

[@rosgoncharuk2403]

Your videos are extremely informative and useful, you should have more subscribers and views! If only people valued actual knowledge...

[@JulianEdgar]

Glad you like them!

[@arecksONE]

Julian, another fantastically done video. I am so glad you filmed this when you did as I spent most of the afternoon yesterday cleaning my engine and doing minor repairs and best of all, getting my car running again (and strong!) after a long period of sitting. The main reason I was motivated to work on the car was because I knew the final difficult-to-obtain intake pieces I ordered from a distant land were arriving and I would be able to finally run the car with a filter. It's an E30, so the fact that I am pulling air from the high beam area (just fore of the radiator, in the grill) is perfect based on your explanation. I drove her 100 miles in on a calm, crisp, 35-degree (F), dry night and really noticed an improvement in top end (80+++++) and throttle response, especially because the stock air box on the E30 is very, very convoluted and restrictive. It was also the first time I felt really comfortable shaking down the car on the wiiide twisties since I've owned her, so it may have been a combo of both. Can't wait to get back on the track. You book will be so very helpful if it's anything as well-done as your videos. Thank you again. Alex

[@farnarkleboy]

Fabulous to see you on KZbin Julian , loved Autospeed , will buy your book , all the best to you

[@herniagaming]

I'd imagine boosting intake efficiency through modding duct work and some Areo mods would be a decent way of giving a small bump to fuel use and power

[@vapoodyne8249]

I love these videos! I have a mk7 gti and you have made me want to tape wool strings all over my car. Even though people will think I’m nuts! I definitely will be buying your book to learn even more. Thank you

[@JulianEdgar]

Go for it!

[@diydrivenGA]

Same here....have you modded the intake tract any?

[@vapoodyne8249]

@@diydrivenGA I haven’t done anything to it except pull the snow guard out. I’ve been working on the big stuff like a full under tray and discs for the wheels

[@Vigo327]

Autospeed Julian Edgar? I have to wonder if these videos would get more views by that name association. Enjoyed many, many articles!

[@andrewburt7900]

What’s autospeed?

[@paulchang3336]

Autospeed the best car enthusiast site... RIP

[@tturi2]

i lost my intake snorkel on my ef falcon, i think ill use the bellmouth where the foglights go routed to my airbox using silicon hose from supercheap, i also made a plywood undertray that goes to the back of the engine, it is open on both sides of the engine for now but completely covers the whole bumper area with smooth curves

[@JasperSkallow]

I often wonder between a hood scoop and a longer hose routed to the radiator area, my particular vehicle is the kia cerato koup 2009, and it has a scoop at the front and middle right where the bonnet front lip is. hmm

[@JulianEdgar]

Two pressure measurements - taking about 5 min in total - will tell that answer exactly. No guesswork needed.

[@josvangastel8494]

I love your video's and There's a lot of info I'll be using on my project car, a boxy Volvo estate. However I hear something that is often used when talking about cooler air and that is that it contains more oxygen. I always understood that it's just more compressed but the percentage of oxygen stays the same, 21%. So by being more compressed it just means more air hence more oxygen but the same percentage. I'll be buying your book any minute now.

[@JulianEdgar]

More oxygen per unit volume of flow.

[@catmunkyafzainizam5137]

Cool air intake.already done it.i admit it.fell more power especially at morning, nighttime n raining time.

[@alexandergansel181]

Is ther risk of rain going into the front and into engine?

[@catmunkyafzainizam5137]

@@alexandergansel181 raining ok.but flooded.that bad.ha ha ha.my hks air filter still in a original place. I'm just use cool air intake 2 supply fresh air into a my heat shield box.

[@andrewleonard9257]

Does the height (relative to ground level) of the intake opening make any difference? If two intake locations were compared, and pressure at the two points was exactly equal, would an intake 100mm above the throttle body outperform an intake 100mm above the road, or would performance be identical? That is, is gravity relevant? I've wondered if downdraught carb and throttle bodies have an inherent advantage over otherwise identical sidedraughts.

[@JulianEdgar]

No difference.

[@PROofHAPPYWHEELS]

6:12 Think you meant "isn't high in temperature" unless I am missing something

[@JulianEdgar]

Yes!

[@heitorbernardes7977]

6:40 actually my friend just jumped from an 165 giclet to a 205, to compensate the new intake system at 200km/h (wide band tuned). And it doesn't even have a bell mouth nor the filter is sealed in a box, just a dam around it collecting right next to the headlight vs open turbo

[@JulianEdgar]

What is a giclet?

[@heitorbernardes7977]

@@JulianEdgar i'm sorry, that's what i found as a possible translation, but what i ment is the carburetor nozzle.

[@JulianEdgar]

@@heitorbernardes7977 No problem. Jets or throats then, I think. Glad it worked.

[@theq4602]

So by blocking my radiator partially for fuel economy, and then running a hose from my intake to that high pressure zone created by the bodywork, I can get even more fuel economy.

[@JulianEdgar]

Certainly worth trying, yes

[@andrewburt7900]

How do you keep water out? Do you discuss this in your books?

[@JulianEdgar]

No I don't discuss this in my books. Unless you are fording water deeper than the intake, there won't be an issue. Most factory intakes have a drain hole (eg a hole at the bottom of the airbox) and you can follow the same approach with a new intake. If you live in a very wet area, just put a shield over the intake mouth (as again many standard cars do) to stop direct precipitation flowing in.

[@andrewburt7900]

@@JulianEdgar Awesome, thank you so much!! I was mostly thinking about road spray from other vehicles, this should work great for both. Thank you again!

[@TheSol115]

the ram air effect can be achieved for any car? You teach me ? In the measurements I made, the map pressure does not rise above 130 km

[@JulianEdgar]

You are not measuring it correctly then.

[@TheSol115]

@@JulianEdgar I measure the map pressure and the vacuum. values ​​of 14.23 at high rpm and 0.3 hg or 0.4 hg of vacuum.

[@TheSol115]

@@JulianEdgar I measure the map pressure and the vacuum. values ​​of 14.23 at high rpm and 0.3 hg or 0.4 hg of vacuum.

[@JulianEdgar]

MAP sensor typically not sensitive enough. We're not talking about a lot of pressure. Use a manometer or Magnehelic gauge. It's usually about enough to make up for the pressure drop through the filter - it's not a turbocharger or supercharger!

[@Christdeliverme]

Anyone find those gauges?

[@JulianEdgar]

eBay.