SOHC.co.uk Forums > CB350/400

400 Four strip down.

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ogri211:
That hole in the frame looks as it comes from water sitting in between the plastic mudguard and frame mine was rusty at the same bit on the left hand side it will be caused by the bike sitting on the side stand thats why most of the rust is on the left side.

GregShiv:
Progress so far.
Cleaned up the frame and it was a scratch in the dirt. The rust hole looks like it was caused by water build up as the side that has rusted has a space at the top that has allowed water to get in and not drain out.
I will be getting every black painted metal bit powder coated, all the bits are in a crate waiting to get done.
The bike has tapered roller bearings fitted to the yokes but they look pitted so will replace them.
Have been stripping the engine down and I have a few concerns around the cam and bearing journals in the head and rocker cover.
There was plenty of clean oil in the engine and no signs of anything suspicious in the filter or strainer except for a missing spring and the rubber seal around the strainer having perished.

GregShiv:
A few more pictures, I did find a lot of blue gasket material hanging off inside the head area. But there was loads of oil so it does not appear to have been caused by oil starvation.
Do you think it is serviceable?
The cam journals feel smooth but I don't think the head surface looks too good with the scoring.

GregShiv:
I also found repaired damage to the clutch cover, a bit of aggressive polishing might see this improve?

Nurse Julie:
Some of the cam journals do look a little iffy. Will be able to see more when all the old dirty oil has been cleaned off I expect.

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