SOHC.co.uk Forums > CB350/400
400 barrel 'O' rings
Matt_Harrington:
Do the large 'o' rings that go between the barrels and the upper crankcase move into position when the barrels / head are snugged down - I ask as I can't see a way of keeping them in their grooves.
Trigger:
It slips over the outside of the bore liners. Wipe red rubber grease over the o'ring to stop it folding when you roll it down the liners . It just needs to sit up against the grooves and will go in once you torque down the head ;)
McCabe-Thiele (Ted):
When I fitted mine I put Red Rubber grease on the rings plus some in the recess at the top of the liners as per NJ's advice. When I pushed the rubbers up the liner they stayed in place much like a carb bowl one does.
Matt_Harrington:
Cheers! red rubber grease at the ready!
McCabe-Thiele (Ted):
I often wondered why there are O rings as well as a base gasket.
Only time I have encountered something similar was on the old Renault's that had wet liners.
Someone here will know the reason no doubt.
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