its not pretty right now, sort of temporaried in to see ifs its functional, will test tomorrow.
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Looks pretty effective, Bob. Interested in hearing how it works.
I was just about to start shopping for parts to do the same thing.
Did you use a hole saw to make the cut?
I was just about to start shopping for parts to do the same thing.
Did you use a hole saw to make the cut?
Barnco-I'm unsure of actual effectiveness of the airflow under the car with the scoop at that location (as related to a ram effect). One thing for sure: you will need some kinda of screen covering the air input and you should consider this as an additional source of fresh airn and not the only one.
the hole was already cut in firewall, looks like with hole saw when motor was out.
i stopped the air hose at the firewall so that there is that gap betwen firewall and engine intake. should be good for freeway driving as thats when my gets warm.anything will help im thinking.
bill dont try the aluminum air hose for dryers, too close to starter wires, dont ask me how i know.
i stopped the air hose at the firewall so that there is that gap betwen firewall and engine intake. should be good for freeway driving as thats when my gets warm.anything will help im thinking.
bill dont try the aluminum air hose for dryers, too close to starter wires, dont ask me how i know.
Bob,
Replace that shishkabob and duct tape shit with a louvered dryer vent.
Replace that shishkabob and duct tape shit with a louvered dryer vent.
Bob,
I am not familiar with the bottom of a pan car but it seems like someone (Bruce Gordon) ran some kind of 3-4" hose from behind the front wheel wells, under the doors and then turned the rear end of the hose up to direct the air into the opening. He did not connect the rear of the hoses to anything directly into the firewall hole.
His car is/was extreamly low, he had a 2332 with a dry sump and autocrossed the schiest out of it. He said the additional air delivered in this way worked very well.
Just a thought.
I am not familiar with the bottom of a pan car but it seems like someone (Bruce Gordon) ran some kind of 3-4" hose from behind the front wheel wells, under the doors and then turned the rear end of the hose up to direct the air into the opening. He did not connect the rear of the hoses to anything directly into the firewall hole.
His car is/was extreamly low, he had a 2332 with a dry sump and autocrossed the schiest out of it. He said the additional air delivered in this way worked very well.
Just a thought.
terry, its just temporary and besides we just had shishkabobs so im good for a few weeks, i might just recycle those 2 :}
Bob I've had a 4" alum. flex duct in for a few years now. They do help.
It terminates in front of the firewall hole so air can still come in around the opening. One thing I've found is that these ducts scoop up leaves and such along the way. I have an Empi type screen over the fan housing intake and it does catch trash sucked up the pipe. I've gotten into the habit of reaching behind the housing and brushing off the screen every time I check the oil.
~WB
It terminates in front of the firewall hole so air can still come in around the opening. One thing I've found is that these ducts scoop up leaves and such along the way. I have an Empi type screen over the fan housing intake and it does catch trash sucked up the pipe. I've gotten into the habit of reaching behind the housing and brushing off the screen every time I check the oil.
~WB
Bob,
That's a terrific idea ! ! ! I'm stealin' it . . .
Post some more pics once you're beyond the mock-up stage and have everything sorted out, would you?
T
That's a terrific idea ! ! ! I'm stealin' it . . .
Post some more pics once you're beyond the mock-up stage and have everything sorted out, would you?
T
Hey Bob, how'd the test run go?
looking at the pics, I keep seeing it as a squirrel vacuum,
kind of like our local prairie dog vacuum truck...
http://www.youtube.com/watch?v=JLQ70JJpa0M
looking at the pics, I keep seeing it as a squirrel vacuum,
kind of like our local prairie dog vacuum truck...
http://www.youtube.com/watch?v=JLQ70JJpa0M
i cant really test it, the few days after install the temp dropped 15 degrees, waiting for it to warm up a bit.
Joe,
Nice enhancement. One quesiton, though:
I thought the beauty of the NACA duct was its ability to draw in air effectively while minimizing drag. Did you add the tab 'cause it wasn't drawing good enough underneath the pan, or just as a precaution?
Nice enhancement. One quesiton, though:
I thought the beauty of the NACA duct was its ability to draw in air effectively while minimizing drag. Did you add the tab 'cause it wasn't drawing good enough underneath the pan, or just as a precaution?
Bill, Great question . We mounted a tube style anemometer to measure the air speed velocity beneath the car. We then used a very big fan to simulate the air velocity beneath the car. Found the perfect mounting location. Then we worked on the mounting angle. To capture more air we added the tab. Yes the Naca duct is great for not disturbing the aero of the car on the top side. On the bottom underside there are lots of nooks and crannies the air flow pattern changes . The flow is not clean so you have to find the sweet spot.
Hey Bob,
Got your squirrel sucker working yet???
Got your squirrel sucker working yet???
it surely helps, havent driven it much as my engine builder was coming here with new carbs, runs great now, drove it one day and it didnt get as hot and now i am in the middle of installing bigger gas tank plus it is 104 out here.
IMHO, it cant hurt, surely better than sucking all the heat from the oil cooler and fan.
IMHO, it cant hurt, surely better than sucking all the heat from the oil cooler and fan.
That certainly works; I did it some years ago after reading Gene Berg's technical papers. Instead of opening up a hole in the firewall I opened a hole in the rpassenger's side of the front engine apron tin (the one that mounts over the transaxle and motor) and connected a hose to it and then going to an aluminum scoop that was located in the torsion bar area on the passenger's side. Seems to work well.
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Seems like ducting from the horn grills would capture the most airflow right up front
Max Zimmer's wide body VS is ducted from the horn grills to Porsche snorkel air cleaners.
You think he might bring it to Carlisle someday? I'm not sure I believe it exists.
Rumor has it, Max's speedy might be there this year.
I do run within 35 miles of his NJ home 2x weekly with the big truck so I could.... drag it to Carlisle . If the car stays at home, Max may just have to have yet another B' Day party:~)
I do run within 35 miles of his NJ home 2x weekly with the big truck so I could.... drag it to Carlisle . If the car stays at home, Max may just have to have yet another B' Day party:~)