DaveW

Thanks for the online search suggestion - I found some actual measured data (MGB cowl intake) with a Google search:

http://www.britishv8.org/Articles/MG...-Induction.htm

These data confirm that in the situation studied there, the cowl is high pressure compared to the engine compartment, and the wheel wells are low.

Dave

GoodfellaFD3S

iTrader: (213)

Some installation pics taken with a poo camera

turbotoaster

you really think this will make a difference to high speed accelaration or just to get cool air into the engine bay.

Im trying to get my head around why letting air travel into an engine bay would help with aerodynamics, what are your thoughts goodfella

GoodfellaFD3S

iTrader: (213)

My thoughts are that you should consider reading the whole thread starting from the beginning

Specter328

iTrader: (2)

So when doing this we are attempting to utilize the wheel well as an escape for the hot high pressure air in the engine compartment? If thats the case, have you considered that the wheel well is also a high pressure zone? This may negate any effects of the holes or possibly cause higher pressure air to escape into the engine compartment. Any thoughts on this?

MSilk

iTrader: (1)

Looking good!, just my .02 cents even though I am a green horn,
I can see two gains from this, first one I can think of is at lower speed would you not get cooler air flowing behind the front tires to help in cooling the brakes. Second would be to let the hot air out at speed. Maybe were looking at this in the wrong way, what if instead of letting air out, the mesh liners are letting air in to move around (cooling everything), air that has not gone through both the intercooler and the scorching hot *** rad. So if you have some cooler air entering the engine bay then in my mind there is a damn good chance that you are drawing in cooler air for the engine to breathe as well as displacing the hot air under the hood.

Mike

Scrub

iTrader: (25)

Don't they make smoke generators or little smoke bombs you can place in the engine bay then have a follow car and see if the smoke gets sucked out at speed..... Pretty simple test to stop all this bickering.


something like this....
link 1

link 2

ptrhahn

iTrader: (9)

I'm going to try and implement this and test it at VIR in May. My straight speeds are remarkably consistent there, so if there's a big difference, I'll see it.

What's interesting to me is, I remember the concept for the old CWR brake ducts being that, even though they were confined in the wheel well, they'd be fed air because there was pressure buildup in the wheel well. If that is indeed the case, the pressure would have to be higher in the engine bay to exhaust air.

ANOTHER NOTE:
Anyone remember the guy who made ducts from the engine bay to exhaust through the fender vents? I can't find the thread, but if you were to add the mesh or vents behind the oil coolers, I doubt there'd be much use for the over-the-fender liner ducts to the vents anymore, so they engine bay ducts might be a nice companion to the fender vent mod.

DaveW

For those of you who did not want to open the link I suggested above, here are the data showing the wheel well having lower pressure than the engine compartment, and the cowl having higher pressure than either the wheel well or engine compartment:

Scrub

iTrader: (25)

Using my internet skillz to help out DaveW....



Peter,
Are you talking about this mod link and this thread? Mahjik wold be proud

-Dan

ptrhahn

iTrader: (9)

That's the one. I knew it was "ron" something. Looks like everyone crapped on it, but the principle is the same here.

Sarusanj

iTrader: (9)

Installed pics don't look too bad. Except that literally everything in front of your vents I have either removed or relocated. lol My car is black though, so the plastics don't stand out nearly as much. I might have to add this to the list of stuff to do during my rebuild.

CrispyRX7

iTrader: (139)

Rich,
I think it at least looks good.
Regards,
Crispy

Elombard

I wonder if the claimed increase in acceleration is a result of the high pressure in the wheel well being allowed to bleed?

Why do the put the "gills" over the wheels on the body work on Prototype cars? Is that to release pressure or for brake cooling? Maybe its a similar effect here?

Interesting subject.

t-von

iTrader: (8)

Have you driven in the rain yet? That's the only thing I'm curious about is how soaked the engine bay will get.

theorie

iTrader: (31)

what about thru a lake? i want to know if the mesh keeps out teh fishies!

GoodfellaFD3S

iTrader: (213)

Btw guys, I recently drove my FD through a torrential downpour and standing water for about 60 miles roundtrip to get to my shop to work on the car and prep it for DGRRX.

There were a few droplets of water stuck to the mesh and a few droplets on the frame rail inside the mesh. It didn't harm anything at all

RotorRyan

iTrader: (3)

just did mine last week, havnt found anything bad to say about it yet!

20B 3 Rotor

iTrader: (7)

Hopefully Im not too late for those apex seals.

As said before, drug is lovenox

8 indications:
1. Can’t move around easily or very much
2. You have knee replacement surgery
3. You have hip replacement surgery
4. You have a blood clot in the leg (deep vein thrombosis or DVT)
5. You have a blood clot in the lungs (pulmonary embolism or PE)
6. You have belly surgery
7. You have atrial fibrillation (a type of heart rhythm)
8. To prevent any clot from getting bigger.

(Adult Dosage)

Hip or Knee Replacement: 30mg every 12 hours. Initial dose given 12-24 hours after surgery. For hip replacement surgery, a dose of 40 mg once a day, given initially 12 hours prior to surgery. Following the initial phase of thromboprophylaxis in hip replacement surgery patients, it is recommended that continued prophylaxis with Lovenox 40 mg once a day be administered by SC injection for 3 weeks. The usual duration of administration is 7 to 10 days; up to 14 days administration has been administered in clinical trials.

Abdominal Surgery: 40mg once a day. Initial dose 2 hours prior to surgery, with a duration of 7-10 days after surgery.

Treatment of DVT with or w/o PE: 1 mg/kg every 12 hours administered. In inpatient (hospital) treatment, patients with acute deep vein thrombosis with pulmonary embolism or patients with acute deep vein thrombosis without pulmonary embolism (who are not candidates for outpatient treatment), the recommended dose of Lovenox is 1 mg/kg every 12 hours administered or 1.5 mg/kg once a day administered SC at the same time every day.

Unstable Angina: 1 mg/kg administered SC every 12 hours in conjunction with oral aspirin therapy (100 to 325 mg once daily). Treatment with Lovenox should be prescribed for a minimum of 2 days and continued until clinical stabilization

Treatment of Acute ST-Segment Elevation Myocardial Infarction: In patients with acute ST-segment elevation myocardial infarction, the recommended dose of Lovenox is a single IV bolus of 30 mg plus a 1 mg/kg SC dose followed by 1 mg/kg administered SC every 12 hours (maximum 100 mg for the first two doses only, followed by 1 mg/kg dosing for the remaining doses).

Dosing with Severe Renal Impairment in such cases described above:

Prophylaxis in abdominal surgery 30 mg administered SC once daily

Prophylaxis in hip or knee replacement surgery 30 mg administered SC once daily

Prophylaxis in medical patients during acute illness 30 mg administered SC once daily

Inpatient treatment of acute deep vein thrombosis with or without pulmonary embolism, when administered in conjunction with warfarin sodium 1 mg/kg administered SC once daily

Outpatient treatment of acute deep vein thrombosis without pulmonary embolism, when administered in conjunction with warfarin sodium 1 mg/kg administered SC once daily

Prophylaxis of ischemic complications of unstable angina and non-Q-wave myocardial infarction, when concurrently administered with aspirin 1 mg/kg administered SC once daily

Treatment of acute ST-segment elevation myocardial infarction in patients <75 years of age, when administered in conjunction with aspirin 30 mg single IV bolus plus a 1 mg/kg SC dose followed by 1 mg/kg administered SC once daily.

Treatment of acute ST-segment elevation myocardial infarction in geriatric patients ≥75 years of age, when administered in conjunction with aspirin 1 mg/kg administered SC once daily (no initial bolus)

FixableUnknown

iTrader: (8)

Rich, you fixed my car and didn't even know it. I removed my passenger side liner for the screen mod and found my mysterious short that has bothered me for months. The harness that runs from the top of the wheel well had a spot that had rubbed through where the harness is secured to the frame just below the headlight near the front of the tire. The worn spot wasn't due to tire contact just years of vibration or it was installed the wrong way. Anyway thanks for the fix, send me a bill.

20B 3 Rotor

iTrader: (7)

Lmao man I just figured that out the other day too!! Last year my rooms fuse kept popping and I had no idea why. Well I took of my drivers front tire and same as your case, though my tire had actually chewed into the harness.

Took out I think 5 wires. One all black, one red, one with a green stripe. Im still trying to figure out the 4 wires all with a yellow stripe that look the exact same and need to be connected to each other

Fritz Flynn

iTrader: (263)

You post I listen

I read his years ago but never implemented it and what you're saying makes perfect since, why increase air pressure into a wall. Looks like the fenders on the mg are a low pressure zone so I'm sure this mod has some merit on the FD. Do I think it will make me go down the straight 5mph faster NO. 1 mph MAYBE I usually end up removing half the BS that comes with any car I buy and keep things as simple as possible. If I want to go faster I'll go to the track more.

Stuff that really does work. Front splitter thats flat back to the trans, rear wing (big one), LOWER it as low as you can. My current track car going on 4 years. I had to raise it atleast 1/2 inch to keep the tires out of the fenders, removed the front splitter because I was tearing it apart stepping on curbs ( also shook the front enough to crack 3 oil cooler fittings ) As a result of this and low compression my straight away speeds have suffered but I'm scared already and don't want to go any faster

ps people with FDs always ask where my catch can is, my reply; don't need one

RedR1

iTrader: (5)

I'll see you there, babez! I'll take some pix of the fender mesh too, and post them up

Supernaut

iTrader: (83)

WTF? This isn't the lounge.

RedR1

iTrader: (5)

I know. . . . what are you doing here too? j/k

I just haven't posted in the 3rd gen section in a while since I blew the motor and was stuck in that "since i'm already tearing the car apart, i may as well!" syndrome Had nothing technical to add to this area so I never posted much, just lurked, searched and fixed problems as they were encountered.