Bogmeister Posted May 18, 2012 Report Share Posted May 18, 2012 (edited) I have just been on the Donaldson site looking for a new bowl for my pre cleaner. https://dynamic.dona...104&item=140565. According to the site, my pre cleaner is good for 170 cfm. Can anyone tell me if this is big enough for a zd30 or am I restricting the engine. The reason I ask is that it seems far louder on this patrol than it was on the old (worn out.....no compression) TB42. It there a formula to work this out with a turbo? Edited May 18, 2012 by Bogmeister Link to comment Share on other sites More sharing options...
Davepatrol Posted May 19, 2012 Report Share Posted May 19, 2012 I originally had an 8" pre cleaner on my 4.2 GU but it sounded like it was trying to suck through a straw, So I changed it to a 10" one and have had no troubles with it. Hope this helps. Cheers Dave. Link to comment Share on other sites More sharing options...
Bogmeister Posted May 21, 2012 Author Report Share Posted May 21, 2012 After filling up 10 minutes ago, I find that after doing some hard testing and re-setting up of the Dawes/needle valve. Lots of around town work and a bit of highway, my fuel bill was 38.99 liters for 381km. That says to me that I have got just over 10lts per 100km. Nothing to worry about with the 3.0 i think Link to comment Share on other sites More sharing options...
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