Cold air intake for 850's

BlackThunder · Post by **BlackThunder** » 08 Dec 2009, 16:15

Cool. Thanks, Justin. This looks like an easy mod. Thanks, also for the clarification of how the spring differentiates between the hot and cold air.

willowdog · Post by **willowdog** » 09 Dec 2009, 02:41

Hi All

Does anyone have any ideas or maybe even some science on what the "optimal" temp is for air intake?

I may be wrong, but I gather that the colder the air the better. Therefore, unless it's -40, you would actually never want the warm air intake working?

Any ideas on what the benefit temperature is for the warm air intake (other than the obvious faster warm up time)?

Cheers

Post by **RobTheModd** » 09 Dec 2009, 05:20

willowdog wrote:Hi All

Does anyone have any ideas or maybe even some science on what the "optimal" temp is for air intake?

I may be wrong, but I gather that the colder the air the better. Therefore, unless it's -40, you would actually never want the warm air intake working?

Any ideas on what the benefit temperature is for the warm air intake (other than the obvious faster warm up time)?

Cheers

Being as I live in FL, I have no reason to care for the warm up. Since if its ever -40... or even 30 or less it would be EXTREMELY freaky and I think wed be going into an ice age.
And yeah the colder the air the happier the engine... BUT you dont want to be pumping FREEZING cold air, so cold that it cools your engine down to much while driving. but it gets so warm and toasty that youd need probably -40 blowing constantly on the engine.

Unless you put a manual warm air intake *that you could turn on or off*... I see no other benefit than a faster warm up time... Remember, things tend to warp when too hot. Also this is the reason cars have coolant systems to cool things down.

I was a bit optimistic of this mod when I first read, but since ive done it almost 1k miles ago. I have seen a 2-3 mpg rise. And i bought a wider dowel to put in since the other one was to thin to be of great use. still have a small opening to allow for warm air from the hose.

BlackThunder · Post by **BlackThunder** » 16 Jan 2010, 15:22

I need to fix my flap but where I live, in Minnesota, it does get to the -20s. I'm wondering if I should just leave it alone and/or fix the air box thermostat so it works as intended or force the cold air modification seasonally?

My car does warm up quickly and I've only seen 19-21 average mpg and that is will the addition of the K&N filter. Anyone have any information on those drastic cold temps damaging the engine? The car is parked outside most of the time.

Post by **hausmeister** » 31 Jan 2010, 12:04

I don't think you need to worry, but I also think the volvo engineers put it there for a reason.
Mine still works (it is a bit different from most of the pics here) and i removed it for about half a year to see if there is any difference. While I didn't notice any difference in warm weather, it seemed the car was actually a bit slower in the winter when cold. I put it back in.

jet_brick · Post by **jet_brick** » 01 Feb 2010, 17:01

the intake system for 850s is awesome the way it is. Just get a high flow panel filter- it seals, sounds good, already pulls air from the grille area, what else do you need

volvee850glt · Post by **volvee850glt** » 22 Feb 2010, 18:14

tjts1 wrote:I put together my own quick and dirty intake over the weekend using about 2 feet of 3.25" (the outside diameter of the intake at the airbox) flexible tubing (thank you McMaster). The intake is routed through the same hole over the top of the radiator as the original factory intake. The main difference is that i trimmed some of the plastic from the top of the radiator fan shroud in order to make more room for the intake. This gave me an extra 1/2" of height at the radiator. On to the pics.

Comparing the stock intake tube (left to the 3.25" flexible tubing.

Take a 3.5" hose clamp to attach the tubing to the airbox.

And install it back in the car.

The tube had to be squished down a bit in order to make it fit between the top of the radiator and the fiberglass cross member. I also trimmed the front of the cross member a bit in order to allow a more direct air path.

This version isn't as large or efficient as the original post but its easier to package and doesn't interfere with as many hoses and wires. The factory intake was designed to first and foremost control intake noise, hence the extremely squished design.

This is what I am gonna do but in stead of cutting the plastic like he did I am going to unscrew the plastic piece there and make a bigger funnel type thing that is about half the size of the grill right behind the grill

Ferrisml · Post by **Ferrisml** » 18 Mar 2010, 00:56

I heard tht poking 4, 1/2 holes in the bottom of your air box will give your car better performance ?

newportnatenj · Post by **newportnatenj** » 05 Jul 2010, 20:47

Does a company make a prefab intake for a 94 850? OR would making my own be my only option? Does K&N Sell one? The only reason Im hesitant to make my own (was reading the 25$ intake thread) is because as stated, it definitely leaves in vulnerable to the elements and dirt, ect.

Was planning on purchasing a K&N air filter regardless, but would like to see what someone else might think, If theres a decent prefab one that will get me the same results as making my own, without leaving it so vulnerable, then Im willing to put out the money.

Thanks

Post by **jblackburn** » 05 Jul 2010, 21:27

Does K&N Sell one?

Yes. Check out IPD's site (www.ipdusa.com). I don't know whether it's made by IPD or K&N, but they use a K&N filter on it.

Cold air intake for 850's

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