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Zenith CruZer & Sonex Logs
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Date: 1-17-2011
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Number of Hours: 0.70
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Manual Reference: aerovee
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Brief Description: Firesleeve Dip & Oil Line Fittings
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Since I'm working on my fuel & oil lines, I wanted to consider firesleeve for both the oil & fuel lines - just in case.
Firesleeve instructions say to ideally dip the cut ends in a special-purpose "firesleeve dip" in order to seal the fiberglass ends - the thought being that if they are not sealed, they will wick-up oil & fuel and in effect not do a bloody bit of their intended use. Since the dip is about $140 a quart, most folks don't buy it.
One alternative is to obtain some red hi-temp RTV, and coat the inner surface of the cut ends. This does OK at first thought, but unless you really really really work the RTV into the fiberglass mat, it may still wick to a certain extent.
Other builders have mentioned that if you mix MEK *with* the hi-temp RTV, it will make a usable dip sealer. So, that's what I did. I mixed up a batch - mostly trial and error to get the consistency you want. Once I dipped the end in, voila, it looked just like pictures I've seen of ends sealed with the $140 product. They recommend that you let it dry for 8-10 hrs before messing with it, so I'll check tomorrow to see how well it holds up.
Next up was to put ends on my oil cooler lines. Since I'm still waiting for my new lower oil cooler baffle, I'm really not sure how long to make the two lines. So, I just put a fitting on each end of my remaining braided line, and will cut to length once everything is in place. Once cut to length and the other two fittings put on, firesleeve will go on these as well.
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Dip Results
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Two ends with fittings
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