Tuning fitting a Cone filter

[maniacbravo]

So I recently bought a cone filter 15cm in diameter and after removing the old box filter, I was unable to remove the bottom box (without shattering it), so any help on that would be greatly appreciated. Then I tried to fit the new filter and sitting it inside the box but it doesn't fit between the left fender and the metal part (attached to the chassis) between the old air filter and the battery. Any suggestions?

 

[maniacbravo]

removing the fender bolts to get a bit of flex and sheer brute force fixed this

 

[Peter Pick-Up]

So now the car sounds like it has 10-20HP more, but in fact you'll loose power by sucking in hot air.....!!!

 

[CFREITAS]

Yep, the best setup on the bravo is the original air box with some holes in the bottom half of the air box

To remove the bottom half the splash guards need to be removed as the air box comes out of the bottom

 

[maniacbravo]

I understand your concern (and sarcasm), but I alreasy worked that out. The cone filter will strictly be installed in the compartment where the original air box was, which is isolated from the rest of the engine bay with something like 5mm thick steel. I will also be keeping the front intake to get cool air into said compartment and will also be adding another pipe to get air from the bumper into the same compartment, so cool air should be plenty.

I already tried the car, throttle feels more responsive, car accelerates a tad faster and it sound beautifully at higher revs.

 

[m20b25]

Cone filters are a waste of time unless they're done like this

 

[maniacbravo]

This is how I fitted mine, Whether its optimal or not I cannot say, but its the best I could do (apart from making a hole in the bonnet ), it certainly feels more powerful and now I can easily go up inclines easier, I used to have to drop to 2nd gear at 40km/h on an uphill, I can now easily do it on 3rd gear at the the same speed, torque improvement is surely there.

using the original front intake aswell

and an extra intake from the middle of the bumper, please note this has been cleaned well, spray black and pushed a bit back and it cannot be seen from the front unless you know its there

and goes up to here

 

[CFREITAS]

This is how I fitted mine, Whether its optimal or not I cannot say, but its the best I could do (apart from making a hole in the bonnet ), it certainly feels more powerful and now I can easily go up inclines easier, I used to have to drop to 2nd gear at 40km/h on an uphill, I can now easily do it on 3rd gear at the the same speed, torque improvement is surely there.

using the original front intake aswell

and an extra intake from the middle of the bumper, please note this has been cleaned well, spray black and pushed a bit back and it cannot be seen from the front unless you know its there

and goes up to here

looks cool but you will kill the engine, btw you still get heat soak when the filter is placed there, they need to be directly in the air flow not with feed pipes

 

[maniacbravo]

looks cool but you will kill the engine, btw you still get heat soak when the filter is placed there, they need to be directly in the air flow not with feed pipes

Thats the last thing I wanna do, how will I kill it exactly?, now I'm worried :/

 

[bluejohn125]

Well I think what you have done is fine... and you will have no problems with the engine. You have made a good compromise... when the car is moving you will get a good cold air feed with a ram air effect. In theory hot air from the engine can find its way into the filter if you are stopped or driving slowly but will you lose any real power in that case ????

If you feel a real improvement then be happy with that. Other people will have their opinions and theories on ultimate performance but I think you have done an OK job.

I put a K&N panel filter in the standard airbox of my 1.2 ... no noticeable benefits really but I like it.

 

[CFREITAS]

Thats the last thing I wanna do, how will I kill it exactly?, now I'm worried :/

when I had my 1.2 16v, I blew my first engine with a setup up like that, depending on the quality of the Filter and how often you clean it, bigger bits can and will get through

if you clean it often and use a K&N recharge kit you will be fine other wise your looking at a new filter every service interval

 

[maniacbravo]

Old thread revival!

Guys I was thinking, the air intake pipe is stupidly long on this engine, it wraps itself around the whole engine, probably the piping itself get stupidly hot which hurts a bit in performance, I know its no racecar, but why not?

Does it make sense to remove the whole 2.5m piping and install one going straight to the air filter bay, something like this

p.s, If I change the pipe, it will be probably stainless steel piping, and will change the cone filter to a good quality K&N one.

 

[bluejohn125]

Sounds like a silly idea, looks fine the way it is, just a modification to the original fiat design.

Change the cone if you really want to I suppose...

 

[Peter Pick-Up]

It will sit to close to the radiator, and incoming air will heat up a considerably, loosing lots HP....so I wouldn't do it.

 

[maniacbravo]

The modder inside me doesnt really take a break, so I have another idea, need some feedback before starting though.

I will use the original airbox, with three 2" holes in the bottom of it, a K&N high airflow panel filter and will re-route the front intake pipe through the bottom of the bumper (where I had the previous pipe in the above pictures).

This should isolate from the engine heat, cover the panel from the water that flows between the panels when raining (which is my major concern with the current setup) and hopefully create a more constant power output as the car feels sluggish after it has been sitting in the scorching sun for half a day.

Opinions?

 

[m20b25]

Errr......

I've had a cone filter on my 406. It was absolute crap! I binned it and replaced it with a mix and match array of pipes from Volvo, Iveco, Mercedes and Fiat. Then I got a lump of alu ducting which served as the clean air feed.

There is no extra induction noise from a diesel as they don't work like that. Just spool is a lot more noticeable.

My advice is more filtration. Forget the cone filter, they are useless. Big filter from a van/lorrey is the only way to go

I didn't care how it looked, I wanted it to work right. Which it did

 

[maniacbravo]

Nope, nope, nope. I'm not doing that to my car lol

Probably will stick with the original airbox and pvc piping down to the bumper, with additional holes in the bottom and a K&N panel filter, should be the best configuration for maximum airflow and heat shielding.

 

[CFREITAS]

Original Airbox with a panel filter and some holes drilled into the bottom is all us need
Can even cut a hole in side of the airbox and make an extra airfeed

 

[maniacbravo]

Thats what I'm going for at this point, with a high flow panel filter and a cold air intake instead of that original "intake" which was completely covered by the bonnet, it probably just took a tiny amount of air through the grill which didnt make it to the radiator.

 

[bluejohn125]

All you need is a decent panel filter and a "scoop" to feed the original inlet pipe. No need for drilling extra holes etc, unless you just want noise...

Remenber the original setup was really the same for all cars from 1.4 12V and 1.2 80bhp up to HGT 155... so for a basic TD it's fine with a little optimisation.

Don't mess with the piping to the radiator cover.... this is to allow some warm air to get into the intake for winter cold start situations... but I suppose you could block it off if you live in the med, assuming it's not thermostatically controlled...