Does anybody have any thoughts or suggestions on high flow air filters.
I currently have 48ida,s with uni filter socks but no oil in them.
Looking to get something like a mesh top to keep large objects like small pebbles etc out but don,t want to restrict flow.
I could rig up some flyscreen but want something neat in keeping with the car.
looked at the Jaycee product, nice and neat but to restrictive.
I could run no filters but am worried about small stones when i return to the pit area with sticky hot tyres.
Got any suggestions?

Cheers Col

I used K&Ns on mine and lost nothing.

drift products make a fine mesh filter in a few different pod sizes

Check out latest HotVws story there . You may change your mind on Jaycee .

...bout time, UNI filters are gay

Buy once, cry once.

http://www.thesamba.com/vw/classifieds/detail.php?id=675767 

http://www.thesamba.com/vw/classifieds/detail.php?id=634315 

My german isn't too good so I don't know if these would work with your motor, but im sure you could fab something decent up.
http://www.gwd-weiser.de/?page_id=343 

Use Google Chrome and it translates for you

Thanks for the replys,
checked out all the suggestions and didn,t find anything that i reckon is suitable.
I have the latest edition of HotVW Mag, the Jaycee product is good but loses to much hp, up to 8.
Thats alot i think when you consider the effort, r&d and money to find 8, especially in an under 2 litre engine.
I wonder if you could strip out the inners of the Jaycee product to leave only the coarse mesh?.
Thanks again for your help.

Cheers Col

ANYTHING that upsets the smooth flow of air into those 48 IDAs will mean less power.

The mesh is the problem Colin.
I did some flow tests many years ago, and mesh is not your friend.
Try and make some K&Ns fit if you can. They have a lot of surface area.

How much HP is lost with Uni Filters?

I have a set of stacks and K and N filters that were modified by Art Thraen in the US to fit under a closed decklid. Not sure on flow, I used them and didnt notice any difference from open stacks - not dyno tested though.

Personly , your put any thing on top of carbs you will restrick carbs . But mid range is very little on BBR filters or Jaycee style . Thats what your type of racing needs , very little torque loss . (4%) loss up top my affect
a little engine but a good torque motor or big cube engine your will never feel it or see it .
I would build a air box ( like usa prostock drag vw ) then screen or filter air away from carbs .
Sorry about spelling .

If you are racing " heads up' I can understand being concered about a few HP, but if I was bracket racing I would definately have filters of some kind. On my Ghia I ran tall K&N air filters because I once found a rock sitting between my main jets on my 48 Dellorto carbs , I thought about how much damage that rock could have done. Mike McCarthy

Air filters are certainly worth having, providing they don't interfere too much with air flow around the air horns. Keep as much gap as possible between the air horns and filter, even if it means shorter air horns [only use Weber ones].

^^ fair comment Craig, but lets analyse things if we must..... dusty air will wear the rings and bore, amd really it's in and out and essentially top end only, whereas crappy oil will continuously circulate within a closed system and wear/kill rod bearings, main bearings and wear the crankshaft journals too. If bearings fail, usually catastrophic component failure will be closely following. I know what I'd prefer to fix. Also for consideration is IDA's on tall manifolds can't fit filters with a closed decklid so with my small fan cooling I wanted to keep the lid shut, also my engine is shagged already so some dust isn't really going to make much difference.

Hey Col, have you thought about just running the usual K&N style filters ???

Other thing I've heard from some of the mini guys is to have the air intake come from inside the cabin... in their case behind the dash, but in a Volksy would obviously be from around parcel tray.

Yeah - good point about the scrutineering Col... guess must be the mini guys don't let on !!!



Hoping to get down to do Grafton in June - it's the weekend after Queensland Champs, so turn it into a holiday by taking the week off between I think. Kempsey unfortunately have a date clash, but Bathurst could be a good idea... love to run there, and long tow's don't mean a thing with a company car !!!

Mesh is a killer, the amount of open space between the wires is very small. Thats why the K&N works so well. When you fold out the filter, there is actually allot of area.

A airbox would probably be the best option. With a large filter element before hand. It would allow the air to enter the box and then stabilise before flowing into the intake stack. Allowing the air to slow in the box, would allow laminar flow over the lips of the stacks and reduce losses.

I think RACE magazine (great magazine for weekend racers) did a article on air boxes and velocity stacks, working out the volumre required and shaping etc in 2009? Will try and find it once I sort out the house and where everything ended up.

This is what I have done for Warwick.
I found a rock inside my engine after the last run.
Was very lucky. It barely marked the piston and head, but another second of running would have been tears.

K and N panel filter from what car? Looks like a similar size the one I used in my civic I had a few years ago.

A360 for Commodes are cheap as crap, and the airboxes flow very well too, might be worth considering.

thought the same Damo

I have owned many honda's and not ashamed of it. Best of the jap cars by a long shot. Most of them have been 60's and 70's models.