Thanks again Mark, I totally understand your helpful cautionary advice above now Mate!
Have just sent myself near blind reading the entire Donaldson Selection PDF on a tiny iphone screen [emoji23]
Good news is I finally found the FRG Style A series new models that replaced my old FHG series believed is what I had hoarded in the shed.
http://www.nissanpatrol.com.au/forum.../2021/02/5.jpg
Bad news for the GQ build I fear is that the new and improved FRG model G080585 that suits all old dimensions measured is only still rated at 258 cfm [emoji51]
http://www.nissanpatrol.com.au/forum.../2021/02/6.jpg
I’m only running 10psi on the pissy little GQ Safari turbo but even a pressure ratio increase of between 1.5 <>2.0 above a naturally aspirated TD42 of 265cfm you kindly educated would appear I’m way out of the ballpark [emoji22]
No bloody wonder the old 6.5 Chev started properly stretching its legs after Millweld ripped off this Donaldson and kindly customised a 4” snorkel/airbox system back in the day [emoji106][emoji106]
Really Appreciated Mr Mark [emoji120][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106][emoji106]
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