Topica Loopframe_Guzzi Archive


Subject: RE: con rods

Author: Greg Bender

Date: Sep 15, 2004, 2:50 PM

Post ID: 1717535287



Hi Guy,

The bore on the 750 and the 850 is the same (83 mm), yet diffent pistons
are used. The stroke is increased between the 750 and the 850 (from 70
to 78 mm), but was done so by a change to the journal height on the
crankshaft.

So, Guzzi decided to change three more expensive parts (2 pistons and 1
crankshaft) instead of two less expensive parts (2 connecting rods) just
to increase the stroke.


GuyW wrote:
 
Hi, I'm pretty much a newbie on this list....

Anyway, I don't understand somebody's comment: "You think it would
have
been cheaper to just change the rods rather than the crank and pistons".

Thanx,

-Guy-
71 Ambo


"the 750 & 850 rods were the same. The stoke difference was in the
position
of the crank journal and the wrist pin height on the piston. I don't
know
why gauzy did it like this. You think it would have been cheaper to
just
change the rods rather than the crank and pistons. Maybe they had a
bunch
of rods they needed to get rid of."


Skip & Jane Kologiski
Bird at The Wheel Vintage Motorcycle Stuff
http://home.earthlink.net/~kkologiski/bird.html
Central Florida Reps for the MGNOC (Moto Guzzi National Owners Club).
----- Original Message -----
From: "andy hill" <alh-@adelphia.net>
To: <Loopfram-@topica.com>
Sent: Wednesday, September 15, 2004 11:28 AM
Subject: Re: con rods


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thanks, Greg!
----- Original Message -----
From: "Greg Bender" <gr-@thisoldtractor.com>
To: <Loopfram-@topica.com>
Sent: Monday, September 13, 2004 4:07 PM
Subject: RE: con rods


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Hi Andy,

I believe that the con rods for the V700 and Ambo are
interchangeable...least wise they have the same stroke (70) and only
differ in the bore (80 vs. 83). I believe that the Eldo con rods are not
interchangeable because the stroke was increased to 78 (bore remained at
83). I don't believe there are any differences in the crankshaft that
would affect the con rods. I'm sure someone will correct me if I'm
mistaken. Good luck.

andy hill wrote:
 
are the v-700 con rods the same as ambo/eldo? i can't seem to get the
freaking piston out of the cylinder. man, is this stuck!
thanks,
andy



Regards,

Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender

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Regards,

Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender

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