K&N cold air intakes

[adzyspence]

hey guys
im looking to a solution to my problem, i have a 4.2 fuel injected GQ, running on gas and petrol, have recently blown the airbox up, and am looking into replacing it with a K&N apollo cold air intake.
just seeing if anyone has had any experience with these and what they are like.
any help appreciated.
thanks.
Adz.

[coxy321]

If you keep blowing up your airbox (backfire from LPG?), then putting a flash air filter on it isn't going to improve things. You need to solve the backfiring problem first, most likely due to a vacuum leak or similar.

EDIT: Do you do any 4x4ing or driving in dusty conditions?

[adzyspence]

I've fixed the backfiring problem. It's the only box I can find that's going to work, virtually impossible to find a standard one. Yeah do alot of fourbying.

[coxy321]

Have you got a pic you can post up? I'm not a huge fan of the foam type filters (i like paper), not after seeing the data that Damkia has anyway. For onroad they're ok, for offroad they're bloody terrible.

[adzyspence]

What would you suggest then? That's all I've come up with. Originals are impossible to get.

[coxy321]

Have you got a picture of your engine bay you can post up? Just so we've got an idea of how much/little space you've got.

Just remember, there's more than one way to skin a goat.

[adzyspence]

ill have to get one on the weekend. i have dual battery system. id have maybe 250mm by 250mm area to work in roughly.

[coxy321]

What brand is the dual battery tray? ARB?

[adzyspence]

dont know, was in it when i got it. fits a full size truck battery easy with a bit of room each side of the battery.

[gec]

Maybe try one of these, they come in different intake sizes and I'm currently fitting one up to my Patrol

http://www.nahux.com/NPOWER/product.php ... CDA100-150" onclick="window.open(this.href);return false;

[adzyspence]

thanks for that mate. but thats basically what the k&n one is but 100 bucks more.

[coxy321]

As with most things - there's always a compromise. Using one of those NPOWER units on you truck might make it fully hectic, but will be a PITA for maintenance, and at the end of the day is no better than a brand name foam filter.

Have a look at all of the vehicles racing in the off-road racing series - you'll find most of them are running big Donaldson systems with paper elements (big $$$). These things require maximum air flow under the harshest conditions in the country, and also have to provide clean air reliably. Thats the compromise.

[adzyspence]

Oh your definetly right mate. I'm not after the most fancy airbox, I just want a airtight box with a filter, that can go between my snorkel and air flow metre. And the k&n one seems to be the cheapest/only option to suit me.

[coxy321]

Is there enough room to fit something like the ZD30 GU airbox?

Another thing you can do is have a search for GQ specific airbox tech on here - i know its been covered at least a dozen times in detail, from high HP V8's through to 200+ rwkw TD42's (diesels suck more air than petrols). There were some good suggestions like Donaldson's, Tommahawk Racefab etc. Its worth having a search nonetheless.

[sw1]

as said above k&n are not he greatest in dust

Donaldson do very good filter housings & filters. It just takes some effort to fit to the car.
I maybe wrong, but I think they do 'powercore' filters/elements for the cyclone style/shape housings now as well (probably a bit easier to fit).

[Red Dog 4x4]

I don't know what you guys are doing but in seven years of runnig with a K&N i have never had a problem with dust going through it.

But it is personal prefrence, mine is alwas oiled when i wash it I reoil it so it looks like it came out of the box like a new one.

[B.D.R]

Have you looked at VL turbo box, they are smallish, and it would flow more Air than a 4.2 would need

[adzyspence]

thanks for all the suggestions guys. ive tried the VN commodore airbox, but was just such a muck around, and still didnt seem very watertight, and i dont have any flat surface to mount it on. i think ill still end up with the k&n, i know one of my mates hasnt had any problems with it, as long as it is well oiled as red dog mentioned. Thanks for all the info and suggestions guys