Tony's Subaru Conversion Thread Options

[neo914-6]

tony... maybe bite the bullet and go front cooling (ram air = good)

not necessarily an off the shelf kit tho.... thought about maybe twin radiators like a 996 or maybe a third one in the middle like a boxster S and TT 996's?

would look just like an oil cooler (middle one) and maybe duct the 2 outer ones into the fenderwell?

could be a slick setup... and if anyone could do it... you could

DONE, and there is NO room in the fender for these (IMG:style_emoticons/default/rolleyes.gif),

I thinkTony will make his design work! (IMG:style_emoticons/default/aktion035.gif)

[Crazyhippy]

Reverse the wires on the damned fans.... Let the cars aero help you.

It will NOT make anything worse, and will probably help alot for a whopping $0.00 investment.

BJH

[Aaron Cox]

more pics felix!

[scotty914]

well tony, you have a pm.

and 1 thought might be to put a small reverse scoop under the raditaor, to get some suction going at speed, use the air flow under the car to help pull the air out

and i am still alive

scott

[neo914-6]

more pics felix!

I've high jacked Tony's thread enough. (IMG:style_emoticons/default/biggrin.gif) Besides my daughter broke my camera so all I got is crappy camera pics. See it all in 30 days for the "reveal". (IMG:style_emoticons/default/boldblue.gif)

[jsteele22]

Glad to hear you're still alive, scott. Nobody else around here seems interested in Subaru stuff (IMG:style_emoticons/default/biggrin.gif)

Tony, hope you had as much fun in Italy as I envied you for. Bummer about getting sick.

About the exhaust, I think it's gonna be tough to overcome the tendency of air to want to push up from below. One way to check this, now that somebody has a tin-less driveable 914, might be to tie some (10 or so) little pieces of light thread about 4-6" long to the mesh of the engine lid. At highway speed, I'm guessing they should be waving around in circles but pointing generally up. Or you could just pour some oil on your exhaust and watch where the smoke goes.....

[ThinAir]

Or you could just pour some oil on your exhaust and watch where the smoke goes.....

Purposely burning oil in a 914 - now there's something that's never been done before! (IMG:style_emoticons/default/chairfall.gif)

[TonyAKAVW]

Looks liek I'm going to try reversing my airflow

Okay here's an idea for a scoop. I'm not going to implement this one right away, but eventually this might be a good way to have a scoop and avoid speedbump related death.

Basically the three blue bars slide over the speed bump and push the scoop out of the way.

-Tony

[KaptKaos]

I know it's cheesy, but would an NACA duct in a location similar to this be effective? I don't know if this would be helpful or not, just throwing out ideas.

Oh, welcome back too.

[andys]

Looks liek I'm going to try reversing my airflow

Okay here's an idea for a scoop. I'm not going to implement this one right away, but eventually this might be a good way to have a scoop and avoid speedbump related death.

Basically the three blue bars slide over the speed bump and push the scoop out of the way.

-Tony

Tony,

With that design you might want to remove the reverse gear in the trans (IMG:style_emoticons/default/wink.gif)

Andys

[andys]

Tony,

I couldn't find the site that had a very good tech discussion regarding air flow. This one's not bad for fundamentals of cooling, but a little short on air flow:
http://www.hypertec.ws/todd_porsche/cooling/index.html

In my opinion (nag, nag, nag), you need to get that negative side establised, rather than chase the intake side. Once you get negative pressure, it will suck the air from nearly anywhere. It is far more difficult to force the air flow in a direction it doesn't want to go, as it will simply flow around it if there is any resistance.

Andys

[jsteele22]

Looks liek I'm going to try reversing my airflow

Okay here's an idea for a scoop. I'm not going to implement this one right away, but eventually this might be a good way to have a scoop and avoid speedbump related death.

Basically the three blue bars slide over the speed bump and push the scoop out of the way.

-Tony

This might be getting a bit Rube Goldberg, but that assembly could be held in the retracted position by some weak springs. At speed, it will be pushed downwards by the air flow (equal and opposite reaction...) and then if you hit a speed bump you'd have other things to worry about.

[Twystd1]

have you ever gone to davis cooling and looked at their coolant?

It works WAY BETTER than straight water and better than mix.

It may help some. This doesn't effect air flow.. I know that.

yet I am thinking it might help the system. We`used to run it on our dirt cars. We did this so we could run two row radiators( light) VS 4 row radiators. (heavy)

Worked like a charm. And the newer stuff isn't flammable.

Just a thought.

C

[Aaron Cox]

how do offroad pre-runner race trucks stay cool (some are 700+hp) with a radiator in the area behind the cab...?
i know they run a monster 16" fan on em... but are they onto something?

i dont think they are ducted but could be wrong...

[TonyAKAVW]

Cooling update:

Last week I took the scoop that I had made for the roof, and put it on the bottom of the car. It's not a great fit, and there are lots of cracks and holes, but its there and it does work.

I also reversed the cooling fans so they now pull air through the radiator from beneath the car. Additionally I wired the larger of the two fans to be on all the time.

The result is that Saturday I drove to Joe's BBQ (about 30 miles). The temperature slowly crept up as I drove but stabilized at about 205 degrees F. After getting off the freeway, and driving on side-streets to Joe's, it just touched 210.

I have gone over several speed bumps and curbs, including a really large speed bump in a parking lot, eith no problems. The scoop extends about 2 inches from the floor of the car.

This week I'm going to try to get the vehicle speed sensor problem fixed once and for all, and then I'll start working on a better scoop and sealing up all the holes where the cold air is getting out.

-Tony

[horizontally-opposed]

Cooling update:

Last week I took the scoop that I had made for the roof, and put it on the bottom of the car. It's not a great fit, and there are lots of cracks and holes, but its there and it does work.

I also reversed the cooling fans so they now pull air through the radiator from beneath the car. Additionally I wired the larger of the two fans to be on all the time.

The result is that Saturday I drove to Joe's BBQ (about 30 miles). The temperature slowly crept up as I drove but stabilized at about 205 degrees F. After getting off the freeway, and driving on side-streets to Joe's, it just touched 210.

I have gone over several speed bumps and curbs, including a really large speed bump in a parking lot, eith no problems. The scoop extends about 2 inches from the floor of the car.

This week I'm going to try to get the vehicle speed sensor problem fixed once and for all, and then I'll start working on a better scoop and sealing up all the holes where the cold air is getting out.

-Tony

Don't know if this would be an option, but have always thought the back 1/3 of the side valance panels could have a slick scoop or NACA duct added as there is nothing behind them, or at least space for a creative duct or hoses.

This area is VERY effective — to the point that Porsche said it would have used it for the Boxster except for its one disadvantage in picking up crap from the road. Ruf uses it on their 987-based RK coupe and spyder and it provides enough intake air for 440-horsepower....

And, because the area is black anyway, it would hide the scoops. I suppose that some way of protecting the scoops from blockage would be needed, however.

Just a thought...

pete

[jsteele22]

Sounds good, Tony.

I've been toying with the idea of one of these in case I need just a little bit more cooling. It's made to cool tranny fluid; I don't know if there's a problem using it for engine oil, though. They come in various lengths, and they are small enmough that I imagine they could fit somewhere on the bottom side of a teener.

[Dr Evil]

Sounds good, Tony.

I've been toying with the idea of one of these in case I need just a little bit more cooling. It's made to cool tranny fluid; I don't know if there's a problem using it for engine oil, though. They come in various lengths, and they are small enmough that I imagine they could fit somewhere on the bottom side of a teener.

A Summit racing ball cap? (IMG:style_emoticons/default/confused24.gif)

[jsteele22]

Sounds good, Tony.

I've been toying with the idea of one of these in case I need just a little bit more cooling. It's made to cool tranny fluid; I don't know if there's a problem using it for engine oil, though. They come in various lengths, and they are small enmough that I imagine they could fit somewhere on the bottom side of a teener.

A Summit racing ball cap? (IMG:style_emoticons/default/confused24.gif)

Yeah, ever since I got one, I've had like zero problems with overheating...

But, uh, I meant to link to item DER-13224. Dunno why it linked to that cap instead. Bet it was those damned K-Street Lobbyists...

[Dr Evil]

Ah, I see. Looks good. If you consider that some of the smaller engined 911s had the trombone cooler and it worked well enough, this little gem should cool oil quite nicely. Not sure about water, though.