See, no holes for the little wire pin:

So, Did all of the fan shrouds have a passenger side flap?
Does this look like it has been modified?
Should I worry about not having one?
Thanks
Yes, yes, yes, m'boy.highlandmurf wrote:I am missing the passenger side non return flap, but there is no hole for the little wire pin:
So, Did all of the fan shrouds have a passenger side flap?
Does this look like it has been modified?
Should I worry about not having one?
I'd experiment. Got CHT gauge? Run them open, read gauge at specified control speed load.CarlosZ wrote: I think by closing them off you get turbulence or disrupted airflow within the shroud,
loss of air pressure/volume/flow to the heads due to having so much air escape through the openings at the bottom of the shroud if removed.