Con Rod orientation |
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Android
Senior Member Joined: 14 May 2014 Location: Frogham, Hants Status: Offline Points: 433 |
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Posted: 29 Jan 2017 at 06:06 |
Does anyone know the orientation of the conrods on the crank with regard to the oil holes on the side of the Rod which aim at the piston skirt. Foolishly stripped without taking pictures.
I've checked the manual but no pictures of the crank and rods in detail. |
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You can't buy happiness,
But can buy a bike and that's pretty close! Moto Guzzi 1200 Sport |
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Android
Senior Member Joined: 14 May 2014 Location: Frogham, Hants Status: Offline Points: 433 |
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You can't buy happiness,
But can buy a bike and that's pretty close! Moto Guzzi 1200 Sport |
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17641 |
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Can't answer specifically, but I would have thought the oil should be squirted on the thrust face of the cylinder. The crank turns clockwise as seen in your picture? Then the con rod is assembled correctly as I see it.
Might be talking rubbish of course.
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Brian.
Better 5 minutes late in this world than years early in the next. |
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Dave P.
Senior Member Joined: 12 Jan 2015 Location: Northants Status: Offline Points: 5573 |
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According to Chiltons Guide,the orientation is as follows.
Oil passage facing upwards on the left hand cylinders rod and downwards on the right hand rod.This guide is for Loop Frame models.I don't know if this was ever changed, or why it would be.I hope this helps. Edited by Dave P. - 29 Jan 2017 at 11:26 |
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TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.
1971 V7 Special. 1972 850GT. 1970 T120 Bonnie. 2009 500 Bullet. |
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Dave P.
Senior Member Joined: 12 Jan 2015 Location: Northants Status: Offline Points: 5573 |
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Looking in a later Tonti manual it states that looking from the clutch end the oil holes must face the right; which amounts to the same thing as the above statement.
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TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.
1971 V7 Special. 1972 850GT. 1970 T120 Bonnie. 2009 500 Bullet. |
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Android
Senior Member Joined: 14 May 2014 Location: Frogham, Hants Status: Offline Points: 433 |
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Brilliant thanks Dave
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You can't buy happiness,
But can buy a bike and that's pretty close! Moto Guzzi 1200 Sport |
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17641 |
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I wasn't talking rubbish then. |
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Brian.
Better 5 minutes late in this world than years early in the next. |
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Dave P.
Senior Member Joined: 12 Jan 2015 Location: Northants Status: Offline Points: 5573 |
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No Brian,your logic was spot on.
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TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.
1971 V7 Special. 1972 850GT. 1970 T120 Bonnie. 2009 500 Bullet. |
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Dukedesmo
Senior Member Joined: 17 Apr 2015 Location: Leics Status: Offline Points: 856 |
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Don't know if the same or relevant but I recently changed the big end shells on my LM2 (despite them looking fine but as a precaution due to piston/valve interface).
I made a note of which way they were so that I could refit the same way & same position. The reference I used was that the con rods have 'Moto Guzzi' cast into one side and mine were/are fitted with this writing facing each other, i.e. RH/front rod with 'Moto Guzzi' facing backwards and the LH/rear rod with 'Moto Guzzi' facing forwards. I don't recall the oil passage orientation but assume it must be correct? Unless of course they were the wrong way round from the factory, in which case no harm done as the shells/crank etc. were still in great shape and (although I can't be sure) in only 12k miles from new I doubt they'd been changed before...
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Le Mans 2
Ducati 916 Ducati M900 |
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red leader one
Senior Member Joined: 07 Oct 2014 Location: Cullercoats Status: Offline Points: 4466 |
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Can you always be sure that it was assembled correctly in the first place by whoever.
Maybe that's why some of these situations occur. |
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Dave P.
Senior Member Joined: 12 Jan 2015 Location: Northants Status: Offline Points: 5573 |
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This is off topic but relevant to the above. Yesterday I re-wired a 1938 Norton ES2.The new harness was a brand new genuine Lucas cloth covered item.I couldn't understand why the rear light stayed on even with the switch in the off position.After some head scratching, I realised that the person who had assembled the harness had transposed a Brown/green wire with a brown/blue.Perhaps a colour blindness test should be instituted at the factory |
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TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.
1971 V7 Special. 1972 850GT. 1970 T120 Bonnie. 2009 500 Bullet. |
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Mike H
Senior Member Joined: 21 May 2014 Location: East Anglia Status: Offline Points: 8733 |
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Didn't even know the big end had a hole 'speshly for the oil to come out - I just assumed it leaked out around the sides
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"Chicken nuggets don't dance on a Tuesday."
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Android
Senior Member Joined: 14 May 2014 Location: Frogham, Hants Status: Offline Points: 433 |
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There are 2 cross holes in the main crank pin and part way through the rotation oil will be squirted at the bottom of the piston. Probably aids cooling.
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You can't buy happiness,
But can buy a bike and that's pretty close! Moto Guzzi 1200 Sport |
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17641 |
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Of course that requires the hole in the shells to line up with the one in the con rod.
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Brian.
Better 5 minutes late in this world than years early in the next. |
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