insulation on engine monitor wire melting

[rbridges]

It's the one located on the passenger side near the headers.  is there an easy fix for this such as something that can be wrapped around to protect it?  I'll ask my IA but I just wanted to see if anyone had any ideas.

[jetdriven]

Reroute it to behind the exaust, near the oil sump bolts. In fact, my engine monitor wires are zip-tied to the alternator wire.

[rbridges]

any suggestions for the area where the insulation has melted away?  I may call JPI tomorrow and see what they recommend.

[jetdriven]

any suggestions for the area where the insulation has melted away?  I may call JPI tomorrow and see what they recommend.

The only option is to splice it and replace it. Careful the type of wire you need. Type J and Type K thermocouple wire is different, and the other stuff may require shielded 2-conductor twisted pairs.

[bumper]

If the wires are still inuslated from each other (i.e. the sensor is still working), you might consider re-routing the wire as suggested, but also further insulate it with a length of silicone tubing (McMaster-Carr). You can either disconnect the wires ane thread them trhough the tube, or slit the tubing lengthwise for slip-on insualation. Silicone tubing is rated for something like 450 F.

[rbridges]

I thought about using this.  I'll look into the silicone tubing, too.  thanks

 

http://www.aircraftspruce.com/catalog/eppages/thermoshield.php

[Cruiser]

this should work. Heat sleeve from Wicks Aircraft.

 

http://aircraftproducts.wicksaircraft.com/item/aircraft-thermo-tec-parts/heat-sleeves/18050?&plpver=10&origin=keyword&by=prod&filter=0

[rbridges]

this should work. Heat sleeve from Wicks Aircraft.

 

http://aircraftproducts.wicksaircraft.com/item/aircraft-thermo-tec-parts/heat-sleeves/18050?&plpver=10&origin=keyword&by=prod&filter=0

 

that looks great.  thanks.

[N601RX]

I routed mine up above the rocker covers and attached them to the baffling. This keeps the away from the exhaust, oil and noise that comes from the spark plugs.

[jetdriven]

that looks great.  thanks.

The primary problem is its melting the insulation. You should reroute it so it isnt subjected to that kind of radiant heat.  You can cause a fire like that.   You can heatshrink the wires, but you are only shorting out the wires to each other. If the insulation is melted, it should be replaced.

 

Here is our sled, notice the wires are no where near the exhaust.

 

[rbridges]

just an update.  I pulled the cowl, and it looks like it was some black loom used to bundle wires that melted.  I guess it was too close to the exhaust.  The actual wires and insulation to the sensors are fine.  Nice to catch a break once in a while. 

[jetdriven]

Plastic PET spiral wrap. It melts at a low temp, around 200 F.   McMaster Carr sells Tefzel spiral wrap, its good for more heat.