28 replies to this topic

[The Batman]

right he is what i am thinking using something like this:



now i was thinking running twin air filters so that there is more surface area that is in direct flow of the cold air coming through the tubby ear

then making a sort of enclosure so that there is no chance of sucking in hot air from the engine

would this be beneficial or chatting sh**

[techieboy]

Didn't MaxR try similar and abandon it, in the end?

[The Batman]

not sure..... am just thinking if it increases cold air intake then it will be a good thing......

did maxr abandon it because of it not working or the weight

[techieboy]

did maxr abandon it because of it not working or the weight

Not sure it was weight. It might actually have been down to noise but not sure. Maybe the Vockmeister will know?

[chrisgold]

not sure..... am just thinking if it increases cold air intake then it will be a good thing......

did maxr abandon it because of it not working or the weight

haha, I had a Similar idea, but if you enclose it in you restrict air flow over the engine.

Would not make any difference on a Turbo or supercharged, but would be good on an N/A I guess, No idea what MAF's are on the N/A's? mite kill it? 80mm upgrade and pipework?

Sure thats of no help to you at all

[The Batman]

we dont run mafs well not yet even if you dont make a enclosure you are still doubling the surface area of cold intake air that the sc is sucking in maybe block off the hot side of the air filter?!

Edited by joe_589, 04 October 2010 - 04:14 PM.

[chris_uk]

you need to find out how much volume can pass through one then find out how much volume the car needs. if the volume the car needs is actually less than the maximum volume one filter can pass.. its pointless.

[The Batman]

but this way it stops hot air making its way into the engine its just cold air

[Mangham54]

you need to find out how much volume can pass through one then find out how much volume the car needs.

if the volume the car needs is actually less than the maximum volume one filter can pass.. its pointless.

: Yeahthat : but also would you no need to consider the maximum flow rate of the narrowed branch (like fluid dynamics) and the effect of the two paths of air and how the disturbance (slowing each other down) upon each other effects the speed of the air flow. That is unless you were to create Venturi spin so the air effectively melts together and then you may increase the 'volume' of air through the same cross section of pipe!

Though this is fag packet physics / mechanics

Edited by Mangham54, 04 October 2010 - 04:30 PM.

[The Batman]

I don't think there is a problem with lack of air in the system just that this could improve the amount of cold air into the system But this I way out of my intelligence zone!

[slindborg]

BAAAAAAsically, as a rule of thumb, you need 10lbs or air per min per 100bhp you want to make. Work backwards from there and show yoru workings for full marks I'd say soemthing like an M5 airbox should do you (if they have one airbox )

[Mangham54]

I don't think there is a problem with lack of air in the system just that this could improve the amount of cold air into the system

But this I way out of my intelligence zone!

Ditto, at least you have a knowledge of what the SC inlets look like... I am just mentally imagining it. I can certainly see the benefit of more cold air, but would that really come from better isolation from ambient engine bay temperatures (or worst case scenario some funky way of bring the temperatures down). Can see you fitting and air conditioning unit with that set to cool the SC and air inlet chambers....

Just what kind of parasitic loss v benefit would you get from that? Also the effect of weight (10kg+)

[slindborg]

Just what kind of parasitic loss v benefit would you get from that? Also the effect of weight (10kg+)

put it this way, if it really worked to 'gain' power dont you think it would have been done by now

[Mangham54]

Very true.... I was talking Tongue in cheek, hence the final paragraph!

[vocky]

did maxr abandon it because of it not working or the weight

Not sure it was weight. It might actually have been down to noise but not sure. Maybe the Vockmeister will know?

I removed it and fitted a vocky'd intake

alloy pipe and a cone filter, the least amount of restriction is usually all thats needed

[alanoo]

It's not that critical for an SC application, I can't see anyone making more hp with a twin filter solution on an SC car

[chris_uk]

all i have is a cone slapped right at the end of a long pipe which sits in the turbo ear.

[FLD]

Save your efforts Joe. If you want twin filters look at the cossie ones. I have a group N cone filter thats 14" long but you can now get one that is larger diameter and is cone in cone. These supply cossies up to 800bhp so should be more than enough for the VX. WRT the air con thing. I looked at this some time ago. I thought that with climate control you could almost dial in the ICT. The rate of airflow and amount of cooling are too missmatched to do anything but take the edge off. Drag racers use a 'one shot' variant where they open a bottle of CO2 over a small intercooler to achieve good ICT's.

[The Batman]

There goes that idea then, was just chucking a few ideas out there to see if the cold air intake was able to be improved, but back to looking at over bits and pieces then I was running a rs500 air filter which was very large! This is the one we use on all of our conversions I might just buy a air filter like the itbs ones! So it covers the whole vent but runs through one 80mm pipe this would probably be not a bs solution to be honest!

Edited by joe_589, 04 October 2010 - 06:38 PM.

[vocky]

I have a Group A cossie cone filter connected by a 100mm alloy tube to feed my itb's the 75mm pipe was losing me 10 bhp