tom jelly wrote:

Saw this on the RX list:

To: rx7@world.std.com
Subject: (rx7) [all] cracked tension bolt heads

tonight i've been dressing down my 13BT engine in preparation for a
rebuild, and got to the point of removing the tension bolts.

i broke them free in the FSM prescribed order with an initial 90 degree
turn on the first 18 bolt cycle and 180 degrees on the second cycle.
as i began threading them out by hand, i noticed that the heads of the
majority of the bolts have radial cracking.  i checked some previous
photos of my progress and saw the the cracks had been there prior to my
un-tensioning.

so, a few questions:
does this cracking mean that i now have a set of 18 really cool
shishkabob skewers?
if so, can i use used tension bolts from another engine?
what would have caused this cracking?  improper untensioning from a
previous rebuild?

thanks!

matt baron

 
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