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Project Board / Re: My CB550 K3 Restore Project
« on: June 21, 2020, 11:15:02 PM »
Thanks for the warm welcome everyone,
Yeah, bike was registered in July 77, by that time the promise of 'Super Sports', 'F' models had come along, I actually bought a 400 four Super Sport a month later in August which I loved and I remember thinking how much more modern the 4 in to 1 exhaust was. So it must have been a very 'special' person to ignore all the modern trends and buy this bike. Probably an older citizen which of course I am now. And the funny thing is I love the 4 into 4 exhaust this bike has now so go figure!
And yes the PD carbs dont get a good write up, I would probably like to change them. But having lived through lots of pain servicing the GL 755A carbs until I got them right they are by comparison very simple.
Got as far as removing the valve gear/camshaft cover today (I love taking stuff apart). Everything looks kind of ok to these relatively untrained eyes with the odd exception.
Not a great start, I sprayed Plus Gas on everything over the last two weeks but I guess on these longer bolts it isnt going to penetrate that far -
[ Guests cannot view attachments ]
The remainder should not be too hard to remove-
[ Guests cannot view attachments ]
Rocker pads look ok as do cam lobes and there is no movement on the shafts, plenty of clean looking oil everywhere so oil supply is good -
[ Guests cannot view attachments ]
Worst thing is this, I can feel it with my fingernail and there is a witness mark on the cam journal, not sure how I am going to deal with this yet any ideas? -
[ Guests cannot view attachments ]
Cant see how something could have got to that position whilst the engine was running so I think its been there on assembly which means that someone has been into at least the top end of this motor before I think.
I can lift a link on the cam chain about 5mm so the chain feels pretty loose, is this normal?-
[ Guests cannot view attachments ]
Tomorrow I will remove the head and see what other challenges are waiting
Welcome, you picked the most unloved 550 model there but when sorted and used regularly(pd carbs are a shite) they are really nice and yes just a tad lighter than the GL
Yeah, bike was registered in July 77, by that time the promise of 'Super Sports', 'F' models had come along, I actually bought a 400 four Super Sport a month later in August which I loved and I remember thinking how much more modern the 4 in to 1 exhaust was. So it must have been a very 'special' person to ignore all the modern trends and buy this bike. Probably an older citizen which of course I am now. And the funny thing is I love the 4 into 4 exhaust this bike has now so go figure!
And yes the PD carbs dont get a good write up, I would probably like to change them. But having lived through lots of pain servicing the GL 755A carbs until I got them right they are by comparison very simple.
Got as far as removing the valve gear/camshaft cover today (I love taking stuff apart). Everything looks kind of ok to these relatively untrained eyes with the odd exception.
Not a great start, I sprayed Plus Gas on everything over the last two weeks but I guess on these longer bolts it isnt going to penetrate that far -
[ Guests cannot view attachments ]
The remainder should not be too hard to remove-
[ Guests cannot view attachments ]
Rocker pads look ok as do cam lobes and there is no movement on the shafts, plenty of clean looking oil everywhere so oil supply is good -
[ Guests cannot view attachments ]
Worst thing is this, I can feel it with my fingernail and there is a witness mark on the cam journal, not sure how I am going to deal with this yet any ideas? -
[ Guests cannot view attachments ]
Cant see how something could have got to that position whilst the engine was running so I think its been there on assembly which means that someone has been into at least the top end of this motor before I think.
I can lift a link on the cam chain about 5mm so the chain feels pretty loose, is this normal?-
[ Guests cannot view attachments ]
Tomorrow I will remove the head and see what other challenges are waiting