UNIFILTER
-
mud_slinger
- Hard Yaka
- Posts: 1050
- Joined: Sun Oct 08, 2006 12:00 pm
- Location: christchuch
Uni filters
I have been running a Uni filter fitted with a Safari snorkle in my 70 series for three years now and I can recomend them. I did some maths and reckon the combination has improved my fuel economy by around 10 precent. It breaths easier which you can hear through the hood of the snorkle and is really easy to clean. I would clean it at least twice a month and I have damaged any of the foam yet. The only messy part is applying the filter oil but if you do that in a plastic bag its a piece o cake. If you take into account the paper filters are about $40 then you don't have to clean the uni filter many times to get your money back.
Go and get one, you won't regret it. and... no I'm not a salesman.
Go and get one, you won't regret it. and... no I'm not a salesman.
Keep the shiny side up.
Uni Filter
Thats a great deal. I think I paid over $220 for mine which included the oid.
Keep the shiny side up.
Just a little tip with unifilters, once you have applied the filter oil, squeeze out the excess and intall. Then.. after about two weeks, turn the filter up the other way so any excess oil slowly works its way back down to the base of the filter. After about a month, it's time to clean it again (if youve been in dusty conditions). Another thing..... once you have washed it out in turps.....DON'T peg it to the clothes line with a plastic peg......they melt.
Keep the shiny side up.
The only way to know if your filter can provide a performance or economy benefit is by fitting a restriction gauge. They screw into the intake pipe downstream of the air filter and measure the pressure drop.
If your current filter is showing significant pressure drop, then it's probably clogged. A clean original equipment filter will show minimal pressure drop. If you've fitted a snorkle then you've added a big restriction to your intake.
If your restriction gauge shows no significant drop, then no filter is going to improve your economy or power.
There's a filtration engineer who posts on http://www.outerlimits4x4.com and http://www.aulro.com with the results of his air filter testing.
His results are very damning of K&N type and oiled foam filters, good quality paper filters are your best option. As the posters above have shown, there's a maintenance penalty too.
I built my own vortex filter housing to fit a 100 series landcruiser washable paper filter in my rangie. I've only changed the filter once in the last 5 years and that's because I accidentally damaged it. My restriction gauge shows no significant restriction.
Lastly.
If it were possible to save 10% in fuel from a filter change, the car makers would be all over it.
If your current filter is showing significant pressure drop, then it's probably clogged. A clean original equipment filter will show minimal pressure drop. If you've fitted a snorkle then you've added a big restriction to your intake.
If your restriction gauge shows no significant drop, then no filter is going to improve your economy or power.
There's a filtration engineer who posts on http://www.outerlimits4x4.com and http://www.aulro.com with the results of his air filter testing.
His results are very damning of K&N type and oiled foam filters, good quality paper filters are your best option. As the posters above have shown, there's a maintenance penalty too.
I built my own vortex filter housing to fit a 100 series landcruiser washable paper filter in my rangie. I've only changed the filter once in the last 5 years and that's because I accidentally damaged it. My restriction gauge shows no significant restriction.
Lastly.
If it were possible to save 10% in fuel from a filter change, the car makers would be all over it.
I see. Well in my opinion, having a high flow, washable, foam air filter and a snorkel combination suits my application and I wouldn't be without it. Paper filters may offer no RESTRICTION but are useless when they are dirty and in past experiences, this would be about every 5-7000km. I guess that car manufactures would be all over fuel saving but aren't they largely controlled by the oil companies anyway??? food for thought.
Keep the shiny side up.
Jon wrote:I see. Well in my opinion, having a high flow, washable, foam air filter and a snorkel combination suits my application and I wouldn't be without it. Paper filters may offer no RESTRICTION but are useless when they are dirty and in past experiences, this would be about every 5-7000km. I guess that car manufactures would be all over fuel saving but aren't they largely controlled by the oil companies anyway??? food for thought.
Any air filter is useless if its dirty/clogged.
The big advantage of a foam filter is you can clean it yourself & after a few cleans be ahead financily....but if you dont re-oil it correctly it will not provide correct filtering resulting in debris entering engine & subsequent damage or if over oiled it will reduce economy.