got a line on a good & cheap donaldson off a 40hp stationary motor.

its rated to 67cubic foot/min.

the question is; will a std 1600tp top this out & starve for air??

i'm hopin that if it works on a 40hp stat motor, the old baja wont worry it.

it should work, i've got a new donaldson copy on my 1500, works great.

Well a 1600tp, at 5000rpm, and running at 100% volumetric efficiency, will use 141cfm of air (by my calcs anyway).

Obviously your not gunna get 100% volumetric efficiency, but how bad your gunna get is another thing. 67cfm/141cfm = 47%. So I would say it will restrict it at higher rpm.

Donaldson's should be cheap, no-one wants them. I got two sitting in my shed that I wouldn't use cos they cause weird flat spots and really aren't a very good air filter.

many thanks for the info...

waht to do now??? - look for a bigger or fab a airbox using a 6cyl palcon/commmondoor filter

:alien

Donaldson's are great heheh, you need a 6" donaldson for a 1600TP. Not a 4" which is what you have.

Wes's hates them... but I think they are the best bolt on solution out there for an offroad VW.

That being said I don't have them on my buggy but a great deal of time went into my setup and most wouldn't be bothered.

Anyway the other option is to use the old factory VW oil air cleaner, they work fine as well.

The big advantage of a donaldson is that it gets the filter up an and out of the dust.

anyone serious about protecting their engine uses a K&N filter set-up. Mount it out of the dust and mud, and make deflector plates in need be. Then when you go offroading put a foam sock over the K&N for that extra level of protection. It also means the K&N doesn't require as much cleaning.

My filter set-up.


Brad's rice buggy set-up (two above his number plate).

Who are you calling RICER ?? Wasn't me who spent many many hours polishing stuff "bling bling " :o:o

Back to cleaners, I actually run 3 K&N's. 1 for each IDF and 1 for my case. All three sit up the rear out of everything. The IDF's have stainless steel (un polished hehe) box's on top with 3" outlets which are plumbed into the bass on the filter tree using some 3" rubber fles with stainless wire ribs.

Do they work ?? HELL YES !!, after a trip to Stadie, I can back with maybe 3 grains of sand on them, everything else was clean. Pulled the IDF's down and found nothing ( as expected ) Drained the oil and nothing once again.

I can now happily drench the entire engine and it doesn't miss a beat.

Even drives over Subaru's without spluttering.

it'll be interesting to see how they go in the rain You may need to carry some rain deflectors around.

I need to make a rain deflector to mine too. :P