Scoop Breather. Do They Work??

Enbloc

Enbloc

Senior Member
I was thinking about putting a stock '35/'36 (?) scoop style engine breather cap back on my '36 instead of the conventional breather cap thats on it now.

Do they work? They seem like a clever design. The way they catch the moving air from the radiator/fan and then pass it through the engine and out the breather in the sump.

But why was they only fitted for a few years?

!B7bMvJQ!Wk~$(KGrHqR,!j!EzNn!(0E)BM0HzBE+sQ~~_12.jpg


Thanks
 
Only problem is that if it was actually really effective, it would be pressurising the crankcase, and making leaks worse. More modern thinking is that by using a pcv you actually create negative pressure in the crankcase and prevent the nasty emissions and as a happy by-product help the engine to not leak as much.

You can probably fit it and it will be a little novel in appearance, but it will probably neither help or hinder signicantly.

Mr bloody know -it - all.. Mart.
 
I can't see it pressuriseing the crank case anymore than what is already there. Whatever enters via the scoop, the same amount leaves via the sump breather.

What I think it is doing or trying to do, is to crate a ventilation flow through the engine, hopefully stopping fumes kicking back through the breather in the engine bay.
 
The scoop style breather will stop gravel and some sand, but the grit gets on through and screws up the engine. Not one of Ford's better ideas.
 
Enbloc said:
I was thinking about putting a stock '35/'36 (?) scoop style engine breather cap back on my '36 instead of the conventional breather cap thats on it now.

Do they work? They seem like a clever design. The way they catch the moving air from the radiator/fan and then pass it through the engine and out the breather in the sump.

But why was they only fitted for a few years?

!B7bMvJQ!Wk~$(KGrHqR,!j!EzNn!(0E)BM0HzBE+sQ~~_12.jpg


Thanks
Click to expand...
Wether you have a 35 or early or late 36,if your going to use that FP its not correct for 36. Early takes the extremly small bowl or the slightly bigger one with off-set inlet and outlet holes.What you have there is a 41 to 46 pump. FYI. ken ct.:)
 
Lawson Cox said:
The scoop style breather will stop gravel and some sand, but the grit gets on through and screws up the engine. Not one of Ford's better ideas.
Click to expand...

Isn't that why there is a filter element in it? You could argue the same for any breather cap and air cleaner even! They all pull outside air in through them.

ken ct said:
Wether you have a 35 or early or late 36,if your going to use that FP its not correct for 36. Early takes the extremly small bowl or the slightly bigger one with off-set inlet and outlet holes.What you have there is a 41 to 46 pump. FYI. ken ct.:)
Click to expand...

The picture is just for illustration purposes.
 
What that scoop was designed for, was to reduce condensation in the crankcase.
How well it worked - I don't know ????
MIKE :)
 
Enbloc said:
Isn't that why there is a filter element in it? You could argue the same for any breather cap and air cleaner even! They all pull outside air in through them.



The picture is just for illustration purposes.
Click to expand...
Ok ,just giving some info in case you didn't know. ken ct.:)
 
The Air Scoop was to create ventilation of the crankcase thereby reducing formation of sludge so common in earlier non ventilated engines. This condition was made worse by the poorly formulated oils of the time.
 
Adding forced (here, very gently forced) air flow to the ventilation system is a potential alternate route to a PCV system, and one that was used...there is a commonish Lincoln Zephyr accessory that added a small heater type blower motor to improve crankcase ventilation.
The scoop probably added very little boost, and filtering was definitely an issue...not that the later filters for that location were great either.
Flatheads with factory PCV used a fairly large oil bath filter there in place of the oil-wette brillo pad.
 
I'm surprised it took Ford so long to finally put a road draft tube on there in the 48 trucks & 49 cars. I guess they wanted folks to buy a new car when the oil stink started to permiate the interior space. Early form of planned obsolescence.

Kerby
 
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