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Replacement engine breather hose
- Thread starter bob888
- Start date
Std rubber doesn’t last long in oil applications. Spruce sells hose designed for oil contact. Better to go that way than radiator hose. I needed a 90 on the 10 and justified sweated a copper ell and two copper pipe stubs for the bend.
Bob:
Go this route. Half the price of Napa, and they're only a hop, skip and a jump from us:
It’s a coolant hose. For the 6 cylinder engines, it’s NAPA #NBH 7545:
Van's PN: EA CV HOSE 7545
store.vansaircraft.com
Van's PN: EA CV HOSE 7545
IO-540 Breather Hose
None of those hoses linked above are rated for oil (just water-based coolant).
Use power steering return hose. It's designed for hot oil under low pressure, just as this application is.
https://www.napaonline.com/en/p/NPS73308 This is 3/4" ID. They also have 5/8" ID if your application uses that, as mine does.
Use power steering return hose. It's designed for hot oil under low pressure, just as this application is.
https://www.napaonline.com/en/p/NPS73308 This is 3/4" ID. They also have 5/8" ID if your application uses that, as mine does.
Isn't it in the book of Revelation that one of the signs of the apocalypse is when airplane parts are cheaper than car parts?
MIL-6000 hose is $15.50 a foot at Spruce.
MIL-6000 hose is $15.50 a foot at Spruce.
It’s a coolant hose. For the 6 cylinder engines, it’s NAPA #NBH 7545:
Van's PN: EA CV HOSE 7545
IO-540 Breather Hose
To the OP, yes - Van's included a chunk of NAPA radiator/heater hose (NAPA p/n 7545 and p/n 9816) in their FWF kits. Since its introduction in the 1900's, it's been pretty well established (and as @hgerhardt noted in his reply) that this type of hose should not be exposed to hot oil (alkanes). This hose *will* soften and can collapse resulting in nose seal failure.
Use MIL-D-6000 hose and/or power steering hose.
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Hm, my breather "hose" is an aluminum tube . . .
Another option. Edelmann 80576 Molded Power Steering Hose
Already has a bend. Fits the breather fitting and aluminum tube.
I didn't like using the Vans coolant hose.
Already has a bend. Fits the breather fitting and aluminum tube.
I didn't like using the Vans coolant hose.
