high flow air filter

[Iseriouslyownafestiva]

i have a 1989 festiva L 1.3 carb. motor. is there a high flow air filter i can buy to replace the one it has in it (fram i believe). I have been searching the forum to no avail. if this question was already posted i apologize but i cant find the answer.

anyone know a part number to a K&N or spectre hpr?

[TominMO]

The restriction is not really the filter, it's the metal container it's in, with that small intake. Try drilling some airholes in it--I suggest on the back, so water can't get in thru the grill.

This will improve breathing at higher RPMs, but have no other effect if you drive it normally; gas mileage shouldn't change, for example.

[rmoltis]

i have a 1989 festiva L 1.3 carb. motor. is there a high flow air filter i can buy to replace the one it has in it (fram i believe). I have been searching the forum to no avail. if this question was already posted i apologize but i cant find the answer.

anyone know a part number to a K&N or spectre hpr?

The k$n drop in filter is 33-222.

And although I don't have a festiva (I have an aspire).

I personally had no luck adding holes to my airbox for increased airflow.

The idea that the box may liberate extra cfms at higher rpm sound good on paper.

But during application I found other things.


I would suggest just starting with the drop in filter.
It made the biggest difference of any intake mod I have done yet.
And it also doesn't make any permanent changes to the hardware.

It just helped reduce the pressure drop through the filter element.
It gained some power and tq
but only in the sense that is wasn't extra power and tq,
Rather it was potentially there but restrictions from the factory were keeping it from being produced.


Even with the increased airflow through the engine due to the tuned exhaust system.
My vehicle still seems to respond best, pull hardest through the broadest rpm range and get best fuel mileage with the drop in k&n filter and stock air cleaner assembly with minor polishing and smoothing to velocity stacks and bends

I have even rotated through them all just to make sure I'm not getting used to the feel of them.

I tried
Cone filter
Drop in filter w stock air box
Drop in filter with bored out airbox
Drop in filter with smoothed and radiused edges
Oem filter and stock air box
Oem filter and bored out airbox
Oem filter with smoothed and radiused edges


When I change each system I make sure to reset idle, ignition timing, air fuel ratio and fuel pressure.

The system I use that achieves the highest fuel pressure with the correct afr at wot
Is the stock airbox with the polished edges and the drop in k&n filter.

When I use for example the cone filter I actually had to drop afr by over a half point.
Which to me showed that airflow into the engine had been reduced.
Which in turn meant a loss in power output (less air+less fuel=less power)

[rmoltis]

The k$n drop in filter is 33-222.

I lost chance to edit my last post, I noticed too late.
It is actually 33-2222

[TominMO]

I lost chance to edit my last post, I noticed too late.
It is actually 33-2222

He has a carby.....

[rmoltis]

My bad lol.

If i could make it work i would try to fit one of these x streams on there the smallest one is 9"

http://www.knfilters.com/universal/X-stream.htm

This is the closest match on k&n i could find.
It matches the correct filter height. But the outside diameter is slightly larger.
it is from a rover metro.

http://www.knfilters.com/mobile/mProduct.aspx?prod=E-9101

here is a filter from a carbed justy it is similar in dimensions but i height and outside diameter are bigger.

http://www.knfilters.com/mobile/mProduct.aspx?prod=E-9101

Maybe someone could take some measurements of what may fit inside that filter cover.

This one is a little irrellavant but 90 and 91 mazda 323 se 1.6l k &n round panel top

http://www.ebay.com/itm/K-N-E-9194-Replacement-Round-Panel-Air-Filter-90-91-MAZDA-323-SE-1-6L-/160688293777

Im sure there would be a suitable replacement out there somewhere.

[rmoltis]

I found it!!!

K&N E-9181

it is for a mazda 121.
the height, outside & inside diameter match that of the 89 carbed festiva round air filter.
someone please give me some real life measurements plz.
this one looks promising.

http://www.knfilters.com/search/product.aspx?prod=e-9181

[harpon]

I tried to put a cone filter on my 95 Escort and it wouldn't even start then, it so altered the flow I guess.
Put a standard new filter back in the old box and it runs like a champ- and that's how it has to stay.

What are you guys doing about the oil breather ? Have you separated that already? I've done that to my cars now. Always looks like a little penis coming off the motor now. 10w-40 yum!

I don't think you'd want to breathe oil onto a $40 air filter especially!

[Iseriouslyownafestiva]

I found it!!!

K&N E-9181

it is for a mazda 121.
the height, outside & inside diameter match that of the 89 carbed festiva round air filter.
someone please give me some real life measurements plz.
this one looks promising.

http://www.knfilters.com/search/prod...px?prod=e-9181

I am going to stop at the auto parts store tomorrow and test fit this filter (K&N E-9181). Ill let you know what i come up with. also if i have to mod anything for any reason ill fill you guys in as well.

[rmoltis]

I am going to stop at the auto parts store tomorrow and test fit this filter (K&N E-9181). Ill let you know what i come up with. also if i have to mod anything for any reason ill fill you guys in as well.

The dimensions of the filter are a close match as far as I could find.
I looked up the dimensions of a carb'd oem paper air filter It said

height 1.78"
Outside diameter 8.11"
Inside diameter 6.11"

The k&n E-9181 dimensions

Height 1.75"
Outside diameter 8"
Inside diameter 6"

I'm sure this k&n E-9181 will be a great fit for you.

[TominMO]

But unless he opens up the air intake in some way, a better filter (or even no filter) will do no good. In fact opening up the intake via drilling a couple dozen holes is much more effective IMO than buying a better filter. And let's remember he is dealing with a carb, with its limited (if any) ability to adjust AFR other than for altitude.

[ryanprins13]

I don't think you'd want to breathe oil onto a $40 air filter especially!

They have to be oiled. You oil em before you stick in in the car. What you need to do instead of using 10w40 or whatever you said just run k&n filter oil in the crankcase and turn the air filter every now and then. Yould never have to service it!

But unless he opens up the air intake in some way, a better filter (or even no filter) will do no good. In fact opening up the intake via drilling a couple dozen holes is much more effective IMO than buying a better filter. And let's remember he is dealing with a carb, with its limited (if any) ability to adjust AFR other than for altitude.

Just modify the top of the filter housing to only bolt onto the filter so that the element is exposed and take your hood off. Then modify another hood to funnel air to the air filter. Faster you go the more power you will get. When you hit 200mph itl be like 20psi of boost!



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[jason_]

I ran a k&n for a while. 100k miles. Changed oil and cleaned as needed.

Turbo had a leaky seal. Tearing into that I noticed the compressor was etched all over.

Paper filter on the other car with 300k miles, turbo looks beautiful.


Point of post? K&n are junk.

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[ryanprins13]

K&n are junk.

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^ +1. If your looking to filter air they are one of the worst. If your just looking to put something in a filter housing to catch rocks and leaves they are ok but so is the screen on your house windows.



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[jason_]

I'd gamble it on a worn out engine I don't care about.

But turbos spin so tremendously to pump air, the amount of exposure of wear vs the engine that is getting the air is like a 100x factor.

Over time, compressor fins will tell you just how good your filter is.

They told me k&n are a waste of money.

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