Pod filter

[nudemetalz]

Hieya,

I've just pulled the NZ engine out to replace the head gasket. I thought I'd check out the air filter and much to my horror, I see it completely disintegrated !! (Explains why it runs so lean in the mornings).

I was toying with the idea of putting a pod filter on it as I need a new filter anyway.

Reckon it's a waste of time or not ?
The std airbox is rather small with very small openings.

Cheers
Chris

[Bonez]

My understanding is pod filters actually let more crap get into the engine, thus accelerating bore/ring wear. Not to mention they are more exposed to the elements.

[onearmedbandit]

Reckon it's a waste of time or not ?
The std airbox is rather small with very small openings.

Cheers
Chris

Chris, there have been a few threads on this sort of topic before, where I don't know as I didn't put them away. General rule of thumb is they offer little or no performance increase, in fact sometimes can lower performance. Getting air/fuel mixture into the bike and expelling the combusted gases is an artform, your engine has been designed as a complete package. What I'm saying is that by removing the specially designed and tested airbox and replacing it with pod's can stuff up your bikes breathing ability, costing you power. Sure the increased noise can make it feel like the bike goes harder, but that's all. Also they can mess up your bikes fueling on cold and rainy days.

Replace your filter, that's all I'd suggest.

[nudemetalz]

Yeah I wondered that too, but if you get the oiled ones, should be too bad.
I know that engines work better if inhaling still air, and you get none of that in the open with pod, so are they mainly good for open bell-mouthed older Brit bikes instead?

[nudemetalz]

Thanks for the replies, guys. I'll go and get a genuine article I think.


Cheers

[onearmedbandit]

Yeah I wondered that too, but if you get the oiled ones, should be too bad.
I know that engines work better if inhaling still air, and you get none of that in the open with pod, so are they mainly good for open bell-mouthed older Brit bikes instead?

No, mostly good for boi racers, especially when fitted with a blow-off valve and a cap on your head offset by 90 degrees. If you can afford it you should also get some low-riding jeans, the lower the better.

Silly boi racers letting their non-intercooled engines breath hot still air rather than colder flowing air.

[nudemetalz]

No, mostly good for boi racers, especially when fitted with a blow-off valve and a cap on your head offset by 90 degrees. If you can afford it you should also get some low-riding jeans, the lower the better.

Silly boi racers letting their non-intercooled engines breath hot still air rather than colder flowing air.

Nah, I'm way too old for that crap !!!

However, the muffler is getting tired and there's been a lot of discussion regarding Neptune exhausts lately........

[T.W.R]

Yeah I wondered that too, but if you get the oiled ones, should be too bad.
I know that engines work better if inhaling still air, and you get none of that in the open with pod, so are they mainly good for open bell-mouthed older Brit bikes instead?

it is a art form settin up a bikes lungs, everything has to balance the flow in and flow out. ( vaccum, vortex effect, scavenger effect, & expelling the gases).
only quality filters work ( K&N, UNI, DNA etc)
best bet for you is just get a quality aftermarket filter for your standard airbox !

[nudemetalz]

it is a art form settin up a bikes lungs, everything has to balance the flow in and flow out. ( vaccum, vortex effect, scavenger effect, & expelling the gases).
only quality filters work ( K&N, UNI, DNA etc)
best bet for you is just get a quality aftermarket filter for your standard airbox !

I hear what you're saying and completely agree, but the problem I have is that most people haven't even heard of an NZ250 let alone do aftermarket bits for them.

I'll do some research through the bike shops and see what they come up with.

Thanks

[T.W.R]

I hear what you're saying and completely agree, but the problem I have is that most people haven't even heard of an NZ250 let alone do aftermarket bits for them.

I'll do some research through the bike shops and see what they come up with.

Thanks

there should be something out there for you dude, plus a good quality filter will be better for the bike anyhow plus brands such as K&N are all reuseable not like stock ones.

DR suzuki filters of the same era should almost be identical ( its the same engine & airbox setup!)

[nudemetalz]

Yes I thought about the DR250's. That's where I get most of the info for the engine from (ie torque settings for the head-bolts !!).

I do know that K & N do an aftermarket one for the DR so I'll go down that track. Johnat Boyles should be able to help me.

Thanks TWR

[Bonez]

Yes I thought about the DR250's. That's where I get most of the info for the engine from (ie torque settings for the head-bolts !!).

I do know that K & N do an aftermarket one for the DR so I'll go down that track. Johnat Boyles should be able to help me.

Thanks TWRYou could make a foam one out of "air filter" foam from PARA Rubber. They stock at least two grades. I made filters up for the GB and cb550f using it. Used the original metal frame by cutting out the old paper element. Glue in the foam and soak with 90 weight oil. Seems to work well.

[nudemetalz]

You could make a foam one out of "air filter" foam from PARA Rubber. They stock at least two grades. I made filters up for the GB and cb550f using it. Used the original metal frame by cutting out the old paper element. Glue in the foam and soak with 90 weight oil. Seems to work well.

I considered that too, Bonez. I'll go and see them tomorrow lunchtime.
Did the GB run any differently ie. jetting ?

[F5 Dave]

Uni filter sell sheets of foam for filters.

K&Ns tend to flow well, on my YZF (replacement airbox filter) I had to upjet, but there was no power increase, convoluted as that sounds.

[nudemetalz]

Is there anywhere in Welly that I can purchase filter foam?
The nearest Para Rubber is in Palmy North.

[Bonez]

I considered that too, Bonez. I'll go and see them tomorrow lunchtime.
Did the GB run any differently ie. jetting ?Runs sweet as a nut. Haven't had to change a thing. Guess I was lucky :)

[DEATH_INC.]

There's a lot of stories running around regarding pod filters,some accurate some not.Genenral consensus is they don't work well on modern down draught carb/injected bikes(with a couple of exceptions),but can work well on older style jobbies IF SET UP PROPERLY!!! This is where a lot of the bs about 'em loosing power came from, if you don't have the skilz to rejet properly(and they can be bloody tricky to get right) they often don't work well as they lean it out lots costing much HP. If you got the time and patience it'll work just fine.

[F5 Dave]

Is there anywhere in Welly that I can purchase filter foam?
The nearest Para Rubber is in Palmy North.

Boyles should have/will be able to get the Uniflow sheet foam. Richards in J'ville have had it in the past too.