> cold air intakes <

[fx gt]

do the boxes for a cold airintake have to be a pecific size as i want to make one for my ae92 fxgt

[bad20v]

Nope, jst so long as they shield most of the hot air from your engine bay away from the filter. Ive seen real small air boxes that work quite well.

[fx gt]

cheers,but one problem would thinish plastic melt in the engnie bay near the battery?

[bad20v]

Dont, if u can help it use plastic. Use steel or aluminium. If your mum's gt sum old baking trays, use those. Thats how I made my airbox in my old ae101 trueno. Jst clean off the biscuit stains first. Or go down to your nearest engineering store and buy sum. Its not that expensive. Gt a 1m x 1m sheet bout 1mm thick, so that its easy to cut and bend. 2 - 3 mm if your going to weld it.

[fx gt]

sweet thanks,ill look into the baking trays

[bad20v]

Its the cheapest way but they work.

[GT4 20]

You don't want aluminium, steel or even baking trays - what you really need is carbon fibre
http://www.220gti.co.nz/cold%20air%20box%20mkIII.htm
Gary

[fx gt]

do they have to have lids or not?this one there dosnt
http://www.220gti.co.nz/cold%20air%20box%20mkI.htm

[bad20v]

You don't want aluminium, steel or even baking trays - what you really need is carbon fibre
http://www.220gti.co.nz/cold%20air%20box%20mkIII.htm
Gary

$$$$$$$$

Some ppl have budgets.

[Caveman]

I guess the molecular design of carbon fibre must improve airflow some how adding HP oh and don't forget about the extra 250g you'll save in weight.

[fx gt]

yip carbon fibre wld be great,so wat do yuo think about that cold air box with no lid?

[bad20v]

So long as the bonnet comes down and closes off the airbox from the rest of the engine bay it shud be fine.

[bad20v]

That Mk1 air box looks almost exactly like mine in my ae111, but wif the filter coming from the back.

[GT4 20]

The MKI box I designed essentially uses the bonnet as the 'lid' (as per bad20v's post) - effectively enclosing the filter and only allowing air to be drawn up from under the car.
Gary

[GT4 20]

I guess the molecular design of carbon fibre must improve airflow some how adding HP oh and don't forget about the extra 250g you'll save in weight.

Oooooooh - looking a bit envious there 1998

Now't to do with weight saving in this case (nor molecular design) - just that it was much easier to make the box out of carbon fibre as it says on the guide. And it wasn't expensive either.
Gary

[Caveman]

Haha your probably right. Im still in denial.

Im happy with my aluminum flexy tubing.

[Stu-]

Thin wall alloy is fine. 0.9 or 1.2 would be best. Easy to fold and easy to weld. We've just got a 2400mm box and pan folder at work so I've been playing by making cold air boxes for the work vehicles - hilux ute, diesel econovan and the 5k liteace which I'll get to when I have time. Doesn't really do diddly for their performance but raises the bling ratio somewhat.

[Dr-X]

You could fibreglass up something nice, it would be pretty easy, too.

[fx gt]

i decided ill have a box with no lid,and make it outa metals

[bad20v]

Sweet. Bad20v wins again.