SOHC.co.uk Forums > CB350/400
My New Project arrives after a 44 year wait!
McCabe-Thiele (Ted):
Hopefully your engine cases do not have too many C codes - a nice combination of A's & B's is easier to find mains for.
Laverda Dave:
--- Quote from: McCabe-Thiele (Ted) on October 01, 2023, 11:11:13 AM ---Hopefully your engine cases do not have too many C codes - a nice combination of A's & B's is easier to find mains for.
--- End quote ---
That could be my first bit of luck Ted, they are marked AABBB :)
McCabe-Thiele (Ted):
--- Quote from: Laverda Dave on October 01, 2023, 12:00:38 PM ---
--- Quote from: McCabe-Thiele (Ted) on October 01, 2023, 11:11:13 AM ---Hopefully your engine cases do not have too many C codes - a nice combination of A's & B's is easier to find mains for.
--- End quote ---
That could be my first bit of luck Ted, they are marked AABBB :)
--- End quote ---
They will be easy enough to find shells for I think DS stocks pretty much all aside from black mains & there are other suppliers iirc in the Far East.
Laverda Dave:
A quick update before I head off back into the garage to go elbow deep once more into a parts washer (note to Santa, can I have an industrial parts washer for Christmas please :)).
So, the engine is now fully apart and everything has had its first clean to remove the treacle that was once oil. I'll give everything a second clean before I begin the close examination and measuring up. Some things have become obvious though as the parts have been removed. From the state of everything and the presence of various colours of instant gasket including red, orange, blue and clear the engine has been apart before. The cam chain was not tensioned following the initial rebuild as the spring is still full compressed on the push rod resulting in the pivot pin of the horseshoe being eaten into by the flailing chain and seizing solid. On removing the valves I found one thrust washer (if that is what it is called) missing between the inner valve spring and the head on No.4 inlet (another addition to the much needed parts list!).
The oil pump has also been apart before as the two dots on the rotors are not on the same side and facing up as they should be. Strangely enough there is not a single scuff or any other mark on the rotor tip or scoring in the body, I suspect a new oil pump was fitted at some stage; probably it picked up sand from the previous ham fisted blast treatment the engine was subjected to?
I found the bike has been fitted with Pirana Ignition, that's a blast from the past for sure although I'm not sure if it works, I will have to test it.
The real downer proved to be the front and rear mudguards. Both these items are genuine Honda and the chrome is in really good condition on both, I thought I had a result here but alas, NO:-[. When I removed the tombstone rear light fitted by the PO it revealed two badly drilled big mounting holes drilled into the mudguard. A similar story occurred on the front mudguard, when I removed the 'shopping trolley' Harley type front fender guard it revealed four 8mm holes drilled into the mudguard mounting/brace piece, sod it :'(. The easy way out would be to fit blind grommets in the holes but that would look really tacky and is a bodge too far for me. I am going to investigate having a very small plate welded at the back of the holes and maybe filing the holes with brass or copper and smoothing it off level with the surrounding profile. Hopefully any welding will not distort the surrounding metalwork and a re-chrome will take. Any thoughts, has anyone tried this method before and does it work?
Back to the shed now, more news as it happens ::)
Mikep328:
Re the oil pump rotor marks - mine was the same, marks on opposite sides, but there was no evidence the pump had ever been removed. Others have said the same re the marks 'mismatched' so I think it wasn't a big deal upon assembly at the factory.
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