Air Cleaner

[incisor]

just wading my way thru the list of consumables needed to keep the beast on the road and made it to the air filter element....

hmmm tracked it down to a donaldson G070017 housing with the P827653 element..

einstein i aint, but by my calculations this engine sucks 230+ CFM at 3500 rpm and then some for the 10lb boost...

correct ?

hmmmm, bitching... the 70017 is only good for 200 CFM :p

so, that begs the question what air filter setup do others run ?

i hear the genuine item is a donaldson unit?

anyone know the part number so i can have a look at what the specs on that are?

[Dougal]

Have you got a restriction gauge on it?

I've made my own filter housing and use a landcruiser 100 series element inside. It's huge though.

[Bigbjorn]

Donaldson ratings are very conservative. From memory they provide the rated flow at around 80% blockage.

[1103.9TDI]

Good to see that red beast go to a good home.

I just hung the expense, and went for the housing and filter specified for the 6x6. Makes the setup much easier to install, nice and secure ie H2O intrusion, you only ever buy the housing once!.

Don't quote me on it, but I think the outer filter is P700071 or something close, I don't have the exact info, because I'm in your neck of the woods.......and mines in at BOR......

[isuzurover]

The OE filter is a huge donaldson unit with a secondary element - this is the same spec as fitted to all off-highway diesels (earthmoving equipment etc.).

Don't have PNs though, but the OE filter is much larger than yours, so would flow better.

[incisor]

FYI according to baldwin's forumla (http://baldwinfilters.com/products/airhousing.pdf), the correct volumes are close to

@ 3500 RPM

333 CFM for the 4BD1-T

202 CFM for the 4BD1

@ 1800 RPM

171 CFM for the 4BD1-T

104 CFM for the 4BD1

@ 600 RPM

57 CFM for the 4BD1-T

34 CFM for the 4BD1

[JDNSW]

Standard filter is Donaldson FH003-0429 (numbers a bit illegible, so this may not be dead accurate). Element P90-0433, guard element P90-0434. Just got a set of elements today.

John

[Dougal]

My spreadsheet puts a 4BD1T with 15psi boost, no intercooler and 80% VE gives me 297 cuft/min.

Intercooling (60% temp reduction) gives you another 50 cuft/min.

[JDNSW]

FYI according to baldwin's forumla (http://baldwinfilters.com/products/airhousing.pdf), the correct volumes are close to

@ 3500 RPM

333 CFM for the 4BD1-T

202 CFM for the 4BD1

@ 1800 RPM

171 CFM for the 4BD1-T

104 CFM for the 4BD1

@ 600 RPM

57 CFM for the 4BD1-T

34 CFM for the 4BD1

Unless I am misremembering, the maximum rpm for the 4BD1 is 3200rpm and for the 4BD1T 3000rpm, although I am sure some have "adjusted' this.

John

[Dougal]

Unless I am misremembering, the maximum rpm for the 4BD1 is 3200rpm and for the 4BD1T 3000rpm, although I am sure some have "adjusted' this.

John

3600rpm for the truck 4BD1T. Industrial engines were probably governed lower.
That said, I seldom go over 3000rpm.

[incisor]

3600rpm for the truck 4BD1T. Industrial engines were probably governed lower.
That said, I seldom go over 3000rpm.

i can imagine.... ;)

hope the new engine & gearbox mounts settle this one out a bit :p

and BTW i just discovered Donaldson's CFM formula is engine HP x 2.5 so a std 4BD1-T comes in at 289 CFM

[isuzurover]

i can imagine.... ;)

hope the new engine & gearbox mounts settle this one out a bit :p

and BTW i just discovered Donaldson's CFM formula is engine HP x 2.5 so a std 4BD1-T comes in at 289 CFM

I don't go over 3000 either - however it is more due to the fact that 4BD1(T)s seem to run out of grunt at the top end. I seem to recall something about the fuel metering being designed to do this???

That formula is dodgy - I would have expected better from donaldson...

[Bush65]

...That formula is dodgy - I would have expected better from donaldson...
It is given as an alternative method.

[incisor]

It is given as an alternative method.

not in their current AustANZ product catalog, they offer no other that i can see...

[Dougal]

not in their current AustANZ product catalog, they offer no other that i can see...

That does sound dodgy. Diesels (especially turbo diesels) can draw a huge amount more air than they need.

Still better than a stab in the dark though.

[Bigbjorn]

My Donaldson Technical Manual gives the following for a four cycle turbocharged engine-

(engine size (CID) x rpm )
(-----------------------) x 1.6( volumetric efficiency) = Intake Airflow (CFM)
( 3456 )

so a 240 cubic inch 4BD1T by this formula requires a flow of 356cfm.

[incisor]

and the only housing i can find that sort of fits the bill in their current range is an FWG unit G108037 at around $400 ...

plus the bits to get it from 4" to whatever size the turbo inlet is in a 90deg elbow...

need a small lotto win :P

will just get a new Vacvalve for the existing one for the moment... their in my price range at $7 ea :P