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OAP Ted's CB400F2 rebuild - engine not run for about 12 years.
K2-K6:
Yes certainly, but with acknowledging where the castings support themselves in vertical load rather than the end of the fins, which will guarantee breaks.
Hopefully you'll not need them if they come apart. The head gasket (in description of sticking in other thread) will hold quite well if assembly is correctly done and surfaces degreased as Honda usually placed strategically important "tacky" areas near to oil transmission routes in getting non leaking assembly. It's not massively strong, but is designed to have a sealing integrity as you describe.
McCabe-Thiele (Ted):
Teds 400 block by Macabe Thiele, on Flickr
400-4 cylinder head by Macabe Thiele, on Flickr
old head gasket by Macabe Thiele, on Flickr
Thanks smoothoperator for the tip - I used a plastic wedge as used by double glazing fitters and gently tapped it int on outer corner. Fed plenty of WD40 into the gap - in a series of tapping the wedge with a rubber mallett and removing it then tapping the head all round it finally let go!
The cylinder head has been off before as there are small witness marks from a chisel or screw driver on both sides. So far looking good - the head gasket is a black material - no sign of blowing anywhere.
I suspect that the exhuast manifold head connections have been leaking with the blow by building up a carbon deposit causing an external bond between head & cylinders.
The engine has clearly been running rich either beforehand or since I had it running.
McCabe-Thiele (Ted):
piston close up by Macabe Thiele, on Flickr
All of the pistons look like this they have Honda brand on the skirts, some carbon between the first & second ring just a light brown coloration above the oil control ring. Bore remarkably wear / step free.
Any observations / comments welcome.
Nurse Julie:
They look stunningly beautiful compared to the ones that came out of my engine Ted 😬😬😬
McCabe-Thiele (Ted):
I remember your tear down pics they were scary!
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