SOHC.co.uk Forums > CB350/400

Front engine mount stuck

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Sprocket:
Hi. When I stripped the bike the large bolt that goes through the top of the top engine case at the front simply cheesed its way off. I was left with a little stub of thread on one side and a flush twisted off wreck the other.

So, in the few months since removal I've had plus gas dripping over it every couple of days. I've centre punched it from both sides. I've gently tapped it from both sides. I've attached a mole grip on the threaded portion and tried to wiggle it. I've put two nuts on the thread done up against each other and monkeyed on the biggest bar I've got and I've gently tapped a very lot harder.

This thing will not move.

Can anyone confirm if there's a thread in the casting?

My last two options are heat and if unsuccessful, a local engineering firm who I think will apply all the above but then some additional machines with long drill bits. :-\

Bryanj:
Its not threaded into the casing just badly corroded

Nurse Julie:
As Bryan says, that corrosion holding it tight. They can be very, very difficult to remove when like that. Be careful, or the engine mounts will give way and break before you get them out. 😱 Deal with them once the engine is stripped, a lot more manageable then.

Rozabikes Tim:
Ouch thats nasty. I would try machine shop next as risk to cases not worth it...... Good luck.

Sprocket:
So, is that built up aluminium fur then?  :o

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