Scott & Tanya Card RV9A build log (N4822C)

I got the left side EGT and CHT probes wired up and secured as well as the GRT fuel flow sensor.

 

  

  

  

 

I have finalized the connections of the EGT and CHT probes on the right two cylinders. I tested to make sure the sensors read a change in temp by holding the heat gun up to them after installation. Yep, saw an immediate change in the readout on the instrument. Much fun!

 

  

  

  

 

After the RTV dried on the the ends of the firesleeve, I installed them on the hoses and secured the ends. I mainly used the clamps from ACS that are meant for this but also experimented with using safety wire. I think the safety wire end looks just fine. The clamps are a couple of dollars each. I did the “final” install of some of the hoses.
I installed the heat muff on the right exhaust tail pipe. Not rocket science at all. Then I moved my attention to the carb heat muff. It needed to be trimmed about 3/4″. I also decided to re-route the wires for the carb temp sensor. I previously had them routed up to meet the starter and alternator routing. That put them too close to the exhaust pipes for my taste. So I re-routed down along the carb heat control cable.

 

  

  

  

  

  

  

 

I picked up the plenum top that Jeff laid up for me last night. It looks like it will work just fine. It just needs some time (~10 days?) to fully cure before I really start trimming on it.
I also went over to Jim’s shop today to pressure test the fuel and oil hoses that I made. All were fine with no leaks. Making those aeroquip hoses isn’t exactly rocket science, but it is a nice capability. These hoses get covered with fire sleeve. The ends of which are usually dipped in an end dressing material like RTV. Well, that stuff is very expensive for the small quantity that is needed for just a few hoses. So, I put some high temp RTV in a little cup and mixed in some acetone to thin it, then dipped the cut ends of the fire sleeve in it. Perfect! Now the ends of the fire sleeve won’t wick up oil and crap over time.

 

  

  

  

  

  

 

I pulled the oil cooler and did the final install of the hose fittings with some sealer. I mark the orientation of each fitting before removing them to put some sealer on the threads, then reinstall aligned with the marks.
I moved on to doing some wiring changes that I needed to do. I’m going to head over to Jim’s shop (9A builder) this weekend to pressure test my custom hoses on a rig that he made.