I just reviewed the section on best practices again.
 Are you guys using a gob of RTV at a point near the center of the bolt or
 is
 there a rubber grommet available specifically for this purpose.
 My bolts had some type of rubber looking substance on some of the bolts
 (not
 all) but they were much worn so I removed it during cleaning.

 Jay

 Put a spiral of red  RTV all along the tension bolt.

 This damps the vibration and prevents the bolt from
 fatiguing at the root of the threads where it screws
 into the front housing.

 Paul Lamar


I tried to put a spiral or glob of RTV on the tension bolts, but it always
got scraped off when installing the bolt and made a huge mess without doing
any good.  It also makes it much harder to remove the bolts and clean the
passages.  Bits of cured RTV get everywhere.

I think Lynn recommends shrink wrap to dampen vibrations.  Most of mine
don't have anything.
--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net <http://n4vy.rotaryroster.net/
http://RotaryRoster.net <http://rotaryroster.net/

Perry Mick broke one and we spent three days looking for the source
of the internal coolant leak out in hot Palm Springs.

Paul Lamar


Paul,

Regarding the tension bolts that run inside the water jacket, won't the
coolant act to dampen vibrations?  I can understand putting RTV or shrink
tubes on the ones that are outside the water passages, but I don't see the
benefit to putting it on the others.  The tension bolts on my 20B had shrink
tubing on the outside bolts, but nothing on the inner ones.

Mark S. Texas

The reason it leaked was the end housing loosened from the rotor
housing. Normally the coolant does not do the damping job. If O-rings are
used they better be silicone for high heat reasons. Perry's broken
bolt was inside.

Paul Lamar