Cold Air Intakes

[damienengland]

Hi All

Has anyone discussed cold air intakes on this forum? These are obviously common place on new vehicles, but how do you go about working them neatly into older cars like Sandmans etc?

Thoughts?

[chrisp]

Have a look at an early Brock commodore or any group C v8

[damienengland]

Thanks chrisp. The VC Brock's look like they have an option although I haven't seen many/any of these around, especially on H series Holdens. Anyone installed one on their van/ute?

[HK1837]

The best place to get cold air on H size Holdens (HD-HG) and W size (HQ to WB) is to bore a big hole/slot through the firewall into the plenum and plumb that to the air cleaner intake.

[damienengland]

Wow, that's some serious out of the box thinking. Any pictures of someone's car who's done it?

[chrisp]

No one would do it because when the car's stationary, all the fumes from the engine bay get into the cabin.
Great for race cars, ordinary for street cars.
Thus the reason the scoop on the A9X was sealed off.

[HK1837]

It is only carby fumes you get if the carb doesn't have a sealed fuel bowl. I think (old memory) VL Group A's used the plenum via the bonnet and scoop??

[Big Rob]

Yeah, I have done that sort of thing before on street cars by removing the heater and using that hole. Not recommended on factory standard restorations though.

[HK1837]

Defintely not, you'd onlyuse it for a circuit car or weekend racer. On a street cruiser just leave as is. YOu could run a 3" pipe over and down through the inner guard where the canister goes on later cars, but again not cool on original-ish cars.

[damienengland]

I think i have found a solution. I had a look at pictures of early Brock/HDT Commodores and noted something familiar about the 'special' air cleaner assembly. I then put a couple of pictures side by side and found out the cold air system looks like its off a 1970's Chev C10 truck! SO i bought one off eBay. All i need now is some sexy ducting and all should be good.

1980-holden-vc-commodore-hdt-brock-sedan.jpg

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