D.i.y. Front Demister 32 Gtst

[D.I.Y. Mik]

I removed the aircon because it nerver worked well and just made the car overheat.

I still need to take off the compressor but theres a pile of junk now and adds up to a small weight saving.

A front demister is required for ADR's and for most track regulations.

So i have to make one. Ill keep the design basic so its easy for me to do.

I bought an electric demister at a caravan shop, a piece of 100mm flex duct and two 100mm flanges from bunnings, and some plugs and a switch from jaycar.

Opened up the heater to select the right replacement switch, and drew a circuit diagram of how it goes.

Wired up the switch.

Removed obsolete ducts under the dash and taped up the holes with metal tape (heat resistant)

Only the window vent is open.

Fitted the heater to the vent with strips of sheetmetal and rivets.

The leftover hole is also covered by a strip of sheetmetal.

The flange is also riveted on.

The duct goes from the window plenum vent (the other 100mm flange is there) to the heater.

Ill fit the dash in the morning, test it out and take a pic of the duct for here.

I have done a bit of searching and can barely find a mention on this subject.

You guys that build race cars must know how to do it properly, is there a kit or something?

If any if you have done this type of thing please tell us how you did it.

Thanks.

[D.I.Y. Mik]

Ok so its all hoked up now

But its not very warm. I hope its enough to do the job.

Ill find out next winter.

If anyone has a better way, please dont keep it a secret.

[Rowdy]

how come you didn't just remove the aircon and leave the stock demister fan etc? I removed my aircon- everything under the hood, and the core from the aircon box under the dash- but kept the fan setup. so basically in the cabin everything stays the same bar the removed aircon heat exchanger. also I think it may be beneficial to have some cool air blowing on you while you are racing in summer.

[D.I.Y. Mik]

The heater core plastic pipes old and cracked, leaking. $240 for those tiny bits of sht, so a $40 heater was my idea.

If i want cold air i can wind down the windows, Ill only be racing against myself anyway.