Mk2 demister modification?

I was wondering how possible it would be to somehow modify the demister to allow air to be blown on the windscreen & side windows (via the adjustable side dash vents as opposed to the useless little built in ones) at the same time?

I'm guessing it would involve modifying both the control flaps and air ducting, has this ever been tried before or would it be more hassle than it's worth?

 

More hassle than it`s worth TBH...

For the windscreen the air is directed straight up out of the airbox, and a flap directs it out to one side to feed the side vents.

 

maybe a more powerfull fan is a better option? any ideas as mine is rubbish just like everyone elses.

 

where would you get a more powerful fan from? mine's very wheezy too.

 

My fan is ok I just find it annoying having to switch between w/screen & side vents, it would be so much easier to have both blowing together

 

I also have been considering this, I looked at my spare dash and it would not be too hard, some GRP over a corrugated card former would do the trick (to re-route the air).

I'm going to give it a go over c mass as I want to fit a new matrix anyway

 

If you can take piccies of how you do it it would make a useful "how to" thread

 

yeah and if anyone knows whether we could have the fan motors rewound or something to make them more powerful, it could turn out to be really helpfull!

 

been thinking bout this, as the windscreen is terrible at demisting.gonna try and route decent air flow to the dash vents

 

just crack open the window a tiny bit, let the moisture out.

 

get a mrk4 polo or seat of the same year with a four speed motor in it . its a the same fitment as the golf but an extra speed just wire it up lose the first speed because golf has only three speed and use 2,3,4 as the fourth is more faster works a treat in mine .
hope you can understand that, im not very good at explaining things

 

sounds a good idea, any pictures?

 

sorry no pics i put it in a few years ago ,it looks the same as the golf blower

 

Im sure i have read somewhere a certain post by the famous RJ where he mentioned using a corrado fan, resistor pack, controls and adding an extra wire to power the 4th speed.

I will have a look for info on it but i may be way off the mark with my suggestion.


***EDIT***

Here is the thread where it is mentioned!
http://www.clubgti.com/forum/showthread.php?t=110939&highlight='corrado+heater'

 

Back OT for a mo; I`ve just been looking over an old airbox, and realised there is a really simple way of doing this...

For those of you who`ve never had the pleasure of a burst matrix, and have thus never seen inside the airbox, it works like so;

There are three flaps in the box to control air direction, connected to the control sliders by three cables.

The lower slider, obviously, is for hot/cold. With the slider fully left, the V-shaped inner flap allows air to flow straight to the front of the airbox, bypassing the matrix.

Fully to the right, and the flow is diverted across the matrix, then to the front of the box. There is of course therefore, infinite options of where this flap is placed to provide varying temperatures.

At the front of the box there are two further flaps. One mounted on a vertical axis, and rotating through a horizontal plane. The other mounted on a horizontal axis, and rotating through a vertical plane. These are connected to the flow direction slider.

Fully left, and the vertically mounted flap is `open`, allowing air to flow into the vent ducting. At this point the horizontal flap is in the upper position.

As you move the slider to the right, the vertical flap `closes`partially, allowing air to also enter the footwell ducts.

Keep going and the vertical flap closes completely, and full air flow goes to the footwells.

Finally as you move to the fully right, the horizontal flap lowers to block off the footwells, thus allowing the air to flow to the windscreen.

The solution, therefore, is remove the vertical flap, and disconnect the cable to the horizontal flap.

That way you will have airflow to the windscreen and vents all the time, and if you want windsceen only, then close each vent indivdually.

Simple, but not elegant of course since you lose some functionality...

The direction slider is rendered redundant, and if you like to keep your feet warm, then you`ve lost that too, but it`s a way to achieve what you want.

 

Thanks Stu.

Might have to give this a try, possibly with the fan upgrade Dan suggested.

 

some pictures please Gaz! could turn it into a sticky!

 

IF I ever get round to doing & it's a success I'll post a "how to" but those are both very big IFs

 

I get **** ALL air going onto my screen. I think I need to take the dash off and would consider changing mine so it does just the windscreen and side ones without any other adjustment. I'd only want to keep the temperature control and different speeds.

Gaz, have you done yours yet? If not, why not, you lazy ****!!

In fact i'm going to start doing it tomorow, kids to bed, dad to car. Sorted.