Rotax 912 oil thermostat installation

I had previously tried two brands of oil thermostat, Permacool and Thermostasis. Only minor improvement in flight regulation, and no improvement in warm-up time. Not worth all those extra hoses and hose clamps full of hot oil Certainly the oil does have to be warm and circulating well, and minutes ground running now does that, and is enough to allow heat soak to stabilize.

The AeroShell plus 4 oil that I use is rated as 10W40, so that viscosity should allow good circulation and lubrication even at just warm temps. It fits in the system really well, and feels like it belongs there.

The bypass would still allow some flow through the engine, but none through the radiator, so the temps would rise. Thermo-Bob suitable for the Rotax. That label will be for liability reasons, as we are all aware. It will have 25mm fittings that will suit the Rotax hoses, and the greater internal flow to suit. Still good value for a really effective top quality product, I reckon.

Please check the boxes for the options that you would like to add. Leave all boxes unchecked for unit only. This provided an immediate fix the my oil overheat problem. Now, even on a steep climb out the oil temp remain stable at or below. It only took an hour to replace the thermostat. California Power Systems assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base.

Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic. Quick Shop. They were both bad near the connection, plus a couple inches further down inside the braided part.

I wasn't able to access any further down without removing the engine. I'm in total agreement!! I really don't want to replace the stator, and feel that just repairing the wires mat be a temporary fix. I might disassemble it and try to replace those two red wires from their source. Personally I think the wires are substandard and wonder how many of it's vintage are in similar condition. Considered an oil cooler flap but glad I did not go down that road.

I have flown for about 70 hours since and I agree with Flygirl - it is a great improvement. Not so much on warm up, maybe a minute ot two shorter but that is not the reason I installed it.

The main thing is keeping the temps at steady and it does that really well. I have the oil radiator on on the left side of the gearbox with both oil lines to and from the cooler running in parallel above the gearbox. So it was easy to cut both lines, install the thermostat, and do an oil purge twice for good measure.

The thermostat handles all scenarios. Newsline News. Airshow coverage sponsor:. A Spot of Bother. Two Stroke. Jets and Turboprops. Air-Cooled Volkswagen. Radial and Rotary. Please enter your comment!