Inverted oil system

[jthocker]

Installing a Raven inverted oil system in my RV8 and am having a hard time reconciling the price of a spring to insert into the breather hose to keep it from collapsing when making the tight turn.
The spring from spruce is 95 bucks for the 3/4 in spring
16 bucks for the larger 1 inch spring

Is there an alternative spring available (47/64")?????

[skybolt31]

I would wait and see if you need it, I don't have one.

[Ironflight]

Tom at TS Flightlines has some hose that has a convolute inner layer and a stainless outer skin - looks great, works great - you might check with him.

[mike newall]

Errrrr,

I'm doing the same, but what tight turn ?

I'm using a 90? fitting off the breather outlet to point down.