Wow!  The differences in opinions is so varied when it comes to the subject of safety wire.  From absolutely nothing to almost everything, and whatever may fall between.  Ed, you have your oil pan drain plug and your oil filter wired with very  little else.  John you mentioned that your oil pan bolts are wired.  Are these all of the small 6mm bolts?  If so; how did you wire them?  Did you drill them, are they weaker because of this as someone has mentioned?  Also John; What type of mount are you using?  Is it the bed mount that relies on the 6mm bolts?  You would not want to weaken any of these bolts however you wouldn't want any of these bolts to come out.  Al, you mention that you don't have anything safety wired and haven't experienced anything important coming lose in a car.  I have and it was very important. It was a tube and o-ring related to the coolant system that was held into the block by one bolt.  Needless to say the one bolt backed out, I lost coolant over heated and I
 pulled over to the side of the road.  I cannot pull over in a plane.  It would be nice if we didn't have to wire anything, however we must decide what is critical.  Bill, I think that your knowledge as a racer is priceless.  We could all benefit from you knowledge and find out what falls off of motors that we really don't want to fall off.  It would appear that oil drains and coolant drains are the most important in racing.  Not only does it protect your engine from complete failure from oil loss or coolant loss, but it also protects other racers on the track as these fluids if spilled onto the track become very slippery.  And once again Ed, you mention that drilling bolts could weaken them, and I agree.  So the question is; When is a bolt or nut to small to drill?  Bill, I also agree with you when you say that "most bolts don't need safety wire if you remember to tighten them".  However what I find interesting is that no one has mentioned or suggested the use of thread lock along
 with proper torquing.  And as far as the tension bolts go from what I understand is that Tracy Crook does not recommend safety wire on these bolts.  He does however recommend the use of rtv sealant on these bolts.  What about sealant and thread lock?  Thanks everyone.

 Keith
RV-7A
13-B