Topica Loopframe_Guzzi Archive


Subject: RE: motor weirdness

Author: sam heath

Date: Dec 26, 2003, 7:20 AM

Post ID: 1715594910



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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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<DIV>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</DIV>
<DIV>sam</DIV>
<DIV>70 ambo</DIV>
<DIV>02stone<BR><BR><B><I>Ray Hale <ray.-@sfcc.edu></I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Charlie,<BR>Thanks for responding. <BR>No bolts rubbing. I removed the pulley and tried again, no difference. <BR>Removed the rockers thinking maybe something there was binding, same <BR>thing. Pushrods (and lifters) moving normally. Everything inside is <BR>spinning, tightly, but I expected that from new bearings, pistons, <BR>cylinders. But if I tighten that nut on the end of the crank where the <BR>pulley mounts, it all locks up. <BR>Only thing I can think of is a crank free-play issue but there is <BR>absolutely nothing about this in any of the lit (that I can find) and <BR>when I posted the list about this, all the responses I got were the <BR>same, including from experienced Guzzi motor builders - don't worry <BR>about it.<BR>This motor was torn down completely. The rebuild didn;t seem complicated <BR>at all and no spare parts were left. I'll teasr into it this morning and
<BR>let you know if I find anything.<BR>Ray<BR><BR><BR>Charlie Mullendore wrote:<BR>> <BR>> Hi Ray,<BR>> The bolts of the crank pulley aren't rubbing against the timing cover <BR>> are they? Trying to think where else there could be a problem. How far <BR>> apart did you have this engine? Cheers, Charlie.<BR>> <BR>> Ray Hale wrote:<BR>> > <BR>> > Happy Holidays y'all.<BR>> > We miss the snow on Christmas day but damn it's a beautiful day here. <BR>> > <BR>> > Was assembling the top end last night (again, don't ask). When it was <BR>> > together and ready for valve lash adjusting I used the generator pulley <BR>> > nut to turn the motor over. As soon as it was tight, the motor refused <BR>> > to turn anymore. Loosen it up and it turns by hand from the flywheel. <BR>> > Tighten it up and no-go. Dreamt about this last night, dammit.<BR>> > <BR>> > Any ideas? This is why I was reluctant to put
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