Topica Loopframe_Guzzi Archive


Subject: RE: Broken cylinder bolt

Author: David Whalen

Date: Oct 29, 2001, 9:45 AM

Post ID: 1708732999


I had a cylinder head stud break on my 74 eldo right
under the nut. I was riding along at about 60 mph and
suddenly I heard a loud "chink" (when it hit the
inside of the valve cover at high velocity) and then
noticed a sudden decrease in power. I replaced the
stud with a new one. I found that the old stud came
out easily with PB Blaster sprayed in the threads and
vise grip pliers clamped only moderately tightly. I
remember that I couldn't get a torque wrench (to
properly torque the bolt according to specs) on the
deep inside head bolt because I didn't have the right
tool. I've since developed a cylinder base gasket
leak. Make sure you torque that pesky deep inside bolt
correctly or you'll end up like me. Mine was on the
left side.

dw
--- Tim Youtsey <ti-@pctusa.net> wrote:
 
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Thanks Patrick,
I've already got the broken stud replaced and the
engine back together.
I welded a nut on the end of the broken stud put a
wrench to it and
backed it right out. I feel very lucky. I stole a
replacement stud from
the Ambo I'm building. I'm still going to need
a cylinder bolt (long one) so I can put it back into
the Ambo

Tim

Patrick Hayes wrote:
 In a message dated 10/27/2001 1:39:52 PM Pacific
Daylight Time,
 ti-@pctusa.net writes:

<< I have enough of the stud exposed to get ahold
of after the rocker support assy is removed. >>

You are fortunate that it is the ouboard studs.
The oil seal ring is at
 the
top under the rocker carrier. Had this been the
top center or bottom
 center,
you would have to remove the cylinder to get at
the oil seal ring below
 the
cylinder.

Do NOT try to grab this with pliars, etc. Buy a
good quality stud
 wrench and
remove it with that. You can double-nut the new
one to screw that into
 place. Good luck.

Patrick Hayes
Fremont CA
EV, EV, SPII, V-65-C, Monza, SuperAlce
MGNOC L-403



Tim,'73 Police, 70'Ambo
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