SOHC.co.uk Forums > CB350/400

Tappet covers

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oldchuffer:
Progressing well with my "box of bits" rebuild, engine in frame and cylinder head on with camshaft, all good so far. But came to a halt today, on the cam cover 4 of the tappet covers came off fine but the remaining four just wont budge, tried heat and even an impact driver but nothing. As the heads are pretty much ruined i thought i'd try cutting a nick in the side and tapping it off with a hammer, but still nothing.

Before a get my angle grinder to them with the hope of "gently" cutting them off somehow, does anyone have any ideas? Are they renowned but seizing solid? Surely they are not torqued up to any great degree.

Nurse Julie:
Yes, they can be a bu**er to remove at times and they should have only just been nipped up when fitting. Very old, flattened O rings can cause them to not want to undo without a fight.

oldchuffer:
Thanks for the info, i'm thinking i may just get a  replacement cam cover (400fourbits has some) as i doubt i'll be able to get the remaining four caps off without causing damage.

smoothoperator:
I had 1 awkward one off by hitting the edge with a hammer and chisel. The tappet cover broke and came off easily, with no damage to the rocker cover. Replacements are in good supply.

McCabe-Thiele (Ted):

--- Quote from: oldchuffer on April 12, 2022, 05:32:26 PM ---Thanks for the info, i'm thinking i may just get a  replacement cam cover (400fourbits has some) as i doubt i'll be able to get the remaining four caps off without causing damage.

--- End quote ---
I would persevere with removing them - personally I see the head and the cam cover as a matched pair through common wear patterns.

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