Topica Loopframe_Guzzi Archive


Subject: RE: motor weirdness

Author: Ray Hale

Date: Dec 26, 2003, 2:37 PM

Post ID: 1715596865



Hey all,
Thanks so much for responding and putting your holiday drenched heads to
my little problem. The emergency is over and I do NOT have an answer.
Very frustrasting and obviously some version of operator error because
this morning as is well. Unless a gremlin with good intentions entered
my shop while I slept and fixed it all, there was no problem to begin
with. I just do not get it.

I swear that yesterday I could not turn the motor over a full 360 and I
put all of my ass into it, too. This morning it spun like a top, smooth
and clean. I adjusted the valves, went for a nice long ride on my brand
x bike, came back and checked it again. All is well. My friend Tom says
forget it and move on like it never happened. I am still paranoid but
will check it every day for a while and then forget it.

I am totally embarrassed to have dragged you guys in with me for no
apparent reason and hope it won't feel like crying wolf. All of your
ideas were good ones and yes, I checked all those things before
buttoning it up a while ago.
Redfaced Ray

sam heath wrote:
 this may seem like a strange thing to check,but it happened to me when i
pulled the pistons and connecting rods out of my ambo motor.did you put
the con-rod back on the same way they came off? i put one on backwards
and it bound up and the motor would not turn. just giving you something
elseto check because you never know
sam
70 ambo
02stone

Ray Hale <ray.-@sfcc.edu> wrote:
Charlie,
Thanks for responding.
No bolts rubbing. I removed the pulley and tried again, no difference.
Removed the rockers thinking maybe something there was binding, same
thing. Pushrods (and lifters) moving normally. Everything inside is
spinning, tightly, but I expected that from new bearings, pistons,
cylinders. But if I tighten that nut on the end of the crank where the
pulley mounts, it all locks up.
Only thing I can think of is a crank free-play issue but there is
absolutely nothing about this in any of the lit (that I can find) and
when I posted the list about this, all the responses I got were the
same, including from experienced Guzzi motor builders - don't worry
about it.
This motor was torn down completely. The rebuild didn;t seem complicated

at all and no spare parts were left. I'll teasr into it this morning and

let you know if I find anything.
Ray


Charlie Mullendore wrote:
 
Hi Ray,
The bolts of the crank pulley aren't rubbing against the timing cover
are they? Trying to think where else there could be a problem. How far
apart did you have this engine? Cheers, Charlie.

Ray Hale wrote:
 
Happy Holidays y'all.
We miss the snow on Christmas day but damn it's a beautiful day here.

Was assembling the top end last night (again, don't ask). When it was
together and ready for valve lash adjusting I used the generator pulley
nut to turn the motor over. As soon as it was tight, the motor refused
to turn anymore. Loosen it up and it turns by hand from the flywheel.
Tighten it up and no-go. Dreamt about this last night, dammit.

Any ideas? This is why I was reluctant to put together without any
regard to crank endplay, although I don't know that it is the culprit.

Ray
Gainesville, Fl



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