- 12.1 Engine arrival
- 12.1 Engine Installation Prep
- 12.1 Engine Installation Prep
- 12.1.2 Engine Mounts
- 12.1.2 Engine Installation
- 12.2.1 Aluminun Oil Lines
- 12.2.1 Aluminum Oil Lines
- 12.2.1 Cabin Heat
- 12.2.2 Fuel Lines
- 12.2.2 Fuel Lines
- 12.1.2 Intake tube modification
- 12.2.2 Fuel Lines
- 12.1.2 Intake tube modification
- 12.1.2 Intake tube modification (completed)
- 12.3.1 – Installing Throttle, Mixture, and Prop Controls
- 12.3.1 – Mixture Control Mounting Bracket
- 12.3.1 Prop Control Bracket
- 12.3.1 Throttle Control Bracket
- 12.2.3 Cylinder Intake Drain Lines
- 12.2.1 – Aluminum Oil Lines
- 12.3.4 Cooling Plenum
- 12.1.2 Oil Cooler mod
- 12.2.4 Pressure lines
- 12.3.4 Cooling Plenum
- 12.2.4 Pressure Lines
- 12.3.4 Cooling Plenum Intakes
- 12.2.3 Electric Fuel Pump Drain
- 12.2.3 Mechanical Fuel Pump Drain
- 12.2.3 Fuel Pump Drain Lines
- 12.2.3 Spider Drain Line
- 12.3.5 Propeller
- 12.4 Exhaust Installation
- 12.3.6 Nose Oil Cooler
- 12.3.6 Nose Oil Cooler Control
- 12.4 EGT Probe Installation
- 12.2.4 Oil Pressure Sensor (remediation)
- 12.4 Oil breather line
- 12.3.4 NACA duct extensions
- 12.4.2 Exhaust Fairing
- 12.3.6 Cabin Heat Damper Control
- 12.99 Induction Air
- 12.2.2 Fuel Line
- 12.3.6 Nose Mounted Oil Cooler
- 12.99 Engine Woes
- Engine Dehydrator
- Fouled injectors
- 12.99 – Oil temperature and heat challenges
- 12.99 Cabin Heat
- Electronic Ignition
- 12.99 Engine induction air
One of the benefits of a custom exhaust is the addition of a oil breather tube port. Normally, the breather tube is plumbed to the bottom of the fuselage. The downside to this is an oily belly and another (this time a big one) tube poking out the bottom of the fuselage.
The other alternative is an air/oil separator which dumps the oil back into the engine. The engine guys I’ve talked to HATE this. They say that oil tends to be acidic not that it’s not a good idea to plumb it back into the engine.
This solution will dump the oil into the exhaust where it will be burnt (supposedly) leaving only a trace film that will just wipe away. We’ll see about that.
One of the challenges is how to connect the breather tube to the exhaust.
At Oshkosh I ran across some “High-Temp silicon hose”. I picked up a piece not knowing if it would even fit. To my surprise, not only is it the correct length, but it’s also the correct diameter.
Even though it’s “high-temp”, I decided to create a shield. The tube itself shouldn’t get too hot for this hose, but I decided to go belt and suspenders. So I got some of the leftover titanium and built a little shield.
It might not even be necessary, but it can’t hurt.