I have been planning to get a cone air filter for my 83' 944. Yes, I know, this does very little to the car HP wise because of the hot engine and radiator air. I just ordered a hood scoop to solve this dilema. I plan to place a heat sheild around it, and place the scoop right over it. Here's my question. There is a hose that runs from the timing belt housing to the filter box, conecting to the box over the square filter. Does this hose suck air out of the timing belt housing, or is it nessesary at all? What do those that have done the mod do with the hose?

 

porsche just plugged the timing belt cover in the later models. all that hose did was serve to suck air from the belt housing, and probalby the fine rubber dust particles.

useless project, but good luck.

-Mike-

 

That is alot of work and money for zippo gain.

Stay stock and spend that cash time on an autocross. Money better spent!

BTW... that hose can be removed. It is not really needed.

 

hey, i did a similar project on my supra i had and i liked it weather it was worth it or not. I would leave the hose or plug it if you cant find a way to keep it....its all in personallizing your car, who cares what everyone else thinks...as long as it doesnt rob power that would be bad.

I molded a bubble from an eclipse hood into the hood of my turbo supra, over the turbo. It didnt really do anything, but man i had alot of people wondering what was under that large hump!! I guess it made clearance alittle better....

 

^^^ What M758 said. Spare an 83, please.

 

Autozone sells little sir filters (1" opening) in the ricer section. I've been looking at how to fit one of those on there. I tried to fit it inside the hose end, but it's way too small and I can't figure it out.

I have been looking for a solution though. Some better filter setups have a seperate fitting for this hose. Right now i have nothing on the end of this. If I had a chance, I'd go back with the stock setup. My setup is one of the cheaper aftermarket cones, but seems to work good. I'll trade you for yours - even trade!

 

Ditch that hose, plug the hole. It's a good way to hydrolock your engine in wet climes, and it's absolutely worthless in all cases.

Sam

 

Why? Does it rob you of any power?

 

Go ahead if you want, it's your car to butcher. But it will make it worth that much less when you have to sell it.

 

Is that a problem in wet climes, like, ...err, Arizona? I've never heard of this in dry climes like Ohio or Florida, and in 125k total miles of 944 ownership have never had more than a small water spot in the lowest corner of the air filter box..

 

It doesn't rob me of power, but there is no noticeable difference, so I'm just looking to go to a stock setup and cut some holes in the airbox. The setup I have is about a $50 setup. The adapter can also fit a 3" K&N cone, but I just haven't gotten around to buying the good cone yet.

 

I just went back to the stock after running a cone for the last 2 years.

When it is above 80 degrees outside, the Cone filter will actually COST you power.

I just did back to back runs, one with the cone, then put the air box back on and the airbox had a better SOPD power delivery.

THe only thing lacking with the stock setup is the bling factor if you are trying to impress your homies.

 

As above, a cone will cost you a few ponies, but with the scoop set up correctly you should be able to get almost all of that power back. I assume you have access to a wind tunnel to make sure it won't create a low pressure condition and cost you even more power than the cone does by itself?
That's a new one on me Sam, Nj can get pretty wet but I've never heard of a single case of hydrolock with a stock intake (I imagine a cone and a hood scoop might be a problem in the rain). Just how wet does the clomate have to be, in order for this to happen??

 

Standing water to a few inches above the bottom belt will do it - the belts fling the water upwards and it gets pulled through that pipe into the engine - do a search, I didn't know about it until reading about it on here - as you mentioned, I certainly don't worry much about it in AZ.

Sam

 

Here's another approach. I bought the cone filter kit from Vertex, which comes with a nice mount for the air flow meter (yes it's fine to mount the meter upside down as the kit suggests) and a cone filter. Then I ran a piece of 3inch diesel supercharger hose over to the hole where the factory intake goes through the fender. I had to "adjust" the cone filter a bit with a hammer but it now fits under the fender, with the neck of it coming through the factory hole nice and snug with no cutting. Thus I have the low-restriction of a cone filter and I'm always drawing cold air from under the fender. (a ricer 4x6 foam filter would be an even easier fit under the fender.) And no cutting the hood! It's is 100% reverseable should you want to sell the car. It's not the prettiest setup but hey it's a race car, I don't care about all that!