SOHC.co.uk Forums > CB350/400
CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE - NOW COMPLETE
paul G:
No not that bothered about seeing you iron Triggers undies ;D ;D ;)
Nurse Julie:
Drained oil, no metal debris on the magnetic sump bung. Removed all cables and ancillaries and got stripping.
You can see the oil jet tubes sitting behind the camshaft.
[ Guests cannot view attachments ] [ Guests cannot view attachments ]
Each is a different diameter and you can see the supporting grommet on the left one is broken.
[ Guests cannot view attachments ] [ Guests cannot view attachments ]
When I unscrewed the hex bolts securing the cam chain tensioner holder, I was expecting it to spring up because that’s what it said in the book but there was no upward spring because the tensioner slipper was seized in the down position. I loosened off and fiddled with the tension adjuster at the bottom front of the cylinder block and hey presto, the slipper popped its head out of the tunnel.
The cam chain has a minute amount of movement on the cam sprocket but nowhere as much free play as I was expecting.
[ Guests cannot view attachments ]
Nurse Julie:
Oil jets from the head.
[ Guests cannot view attachments ]
The head bolt on the left side down in the spark plug port was an absolute pain. I tried to undo it but could feel the socket slip off the nut. In the end I got Trigger to have a go and it took him over an hour of trying with all different tools, hitting, smacking, drilling and eventually it came off, in many parts. As a result I now need a new head stud. It was probably my fault in the first place as I didn’t clean all the old dirt out around the nut head and rounded it off a bit with the first turn of the socket !!.
So far I have found all genuine Honda gaskets and Honda pistons with original internal nuts and bolts so even though I said I think the engine has been apart before, Trig reckons it may not have been. Won’t know for sure until I get the cam chain off to see if it’s a soft link that someone has changed in the past to confirm if it has been apart or not.
I have left everything on the strip down bench for now but need to have a good clean up and inspection of the cam shaft / followers / valves / springs etc to see if there is any undue wear that needs attending to. There is nothing jumping out at present that looks bad or broken and it all looks in very good order to me, nice and clean and no rust.
[ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ]
Nurse Julie:
[ Guests cannot view attachments ]
The mullered head stud
[ Guests cannot view attachments ]
So, problems I encountered today.
I can never seem to lay my hands on the correct size spanner or socket, even though I seem to have hundreds out of the tool box !!
I do find it difficult undoing some of the very tight nuts and bolts, but managed them all except the one on the head which I needed help with.
I have to make my own cuppa's.....I always make him Tea when he's working !!
And.....the workshop now looks like a bomb has hit it and I have been told in no uncertain terms to clear it up.
Now, I have to think what I'm going to cook for dinner :'( :'(
mike the bike:
That head stud looks like it's corroded in.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version