Cool air intake a possible way to gain horses?

[MoVolvos]

I'm now thinking about putting the stock airbox back in. These engines generate a lot of heat and the cone filter is hot to the touch after driving for a while, which isn't good.

I don't think the stock airbox is very restrictive to begin with.

Has anyone heard of using spray-on radiant barrier to cover the airbox and inlet tube?

Splitting hairs at that point. Heat in an enclosed system meaning under the hood needs to go somewhere if it is not absorbed into the Cone Filter or Stock Air Box will go into another component under the hood unless removed outside. That little bit of temp difference is negligible unless the air temp reaches a certain point that it affects the fuel and air mixture in the combustion chamber. The intercooler brings the temp down but if you think about it it is also delivering it right back into the engine compartment. It is a loosing battle in that you need air movement under the hood but it is hot air from the radiator, intercooler and condensor from the AC.

Blessings,

BKM
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PS I would stick with Stock Box as the Plastic should have a lower Specific Heat than the Metal and absorb less heat.
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[MoVolvos]

Here is an Independent Test that has real world numbers and achievable. Been using this product and it's transmission oil since about 1998. You'll get gain while protecting the motor. Read pages 1 and 2.

http://www.mightytitans.com/forums/show ... hp?t=17242

Blessings,

BKM
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[jtp]

If you are going with the stock airbox anyway don't forget about K&N airfilters. They are pretty widely reviewed to make an extremely slight difference in performance, but how much can you expect from very minor mods like these?

[s70glt novice[Will]]

extremely slight difference

Lol, good use of words there.

But otherwise thats about as much as you can do with the stock air intake, it's already well designed.

And not noticeable. MAYBE 1-2 hp up top... But that difference grows the more you mod your car and more of a restriction the intake becomes.

[tjts1]

Really though, the stock airbox flows just as well as any aftermarket intake and keeps temperatures down. IPD even has a video on their site showing differences in temperatures of the stock box and their cone filter and stock was several degrees cooler than their own setup. Is the IPD intake detrimental to performance? Probably not, but you won't see any significant increase either.

Also, ram air is mostly a myth.

I'm not trying to rain on anyone's parade. I have IPD's intake on my own car. It's a nice piece and it sounds good but that's pretty much where it stops.

Some interesting reading on the subject. Links to parts 1-4 are at the bottom of the page.
http://autospeed.com.au/cms/A_0663/article.html

That said, every Volvo intake I've seen is very well designed with a properly sized cold air intake. The only real restriction is the HOT/COLT switching mechanism on NA cars which tends to fail on the hot side.

[KlubMarcus]

The stock intake in a 98 V70 XC already takes in air from in front of the radiator and I'm assuming that engine bays in the 850 series are the same. There's even a debris shield because it's likely to ingest bugs due to it's position behind the grille. There really isn't any other place to get cooler air. The debris shield comes off with one screw. There is no ram-air effect on a turbo because it compresses the intake air even if you are parked. Easiest upgrade is an aftermarket air filter element for durability w/o sacrificing airflow or reliability, next is a piping kit, followed by an intercooler upgrade.

[jblackburn]

^this.