400/4 restoration - it begins at last

[Bryanj]

That adjuster bolts looks like most of the 400 i used to see as if the original broke or got lost and you did get the piece out most people just fitted a standard 6mm setscrew instead of paying for and waiting for the expensive Honda parts to do it right, just pray whoever did it relieved the end threads(ground the diameter down) as they tend to mushroom the inner end which destroys the crankcase thread when you undo it. Can be wiser to wait till you have the crankcases separated so you can file the end of the bolt before winding it out.

[Rozabikes Tim]

Thanks Trig, You do know your job, did we ever doubt it!

[Rozabikes Tim]

That adjuster bolts looks like most of the 400 i used to see as if the original broke or got lost and you did get the piece out most people just fitted a standard 6mm setscrew instead of paying for and waiting for the expensive Honda parts to do it right, just pray whoever did it relieved the end threads(ground the diameter down) as they tend to mushroom the inner end which destroys the crankcase thread when you undo it. Can be wiser to wait till you have the crankcases separated so you can file the end of the bolt before winding it out.

Cheers Bryan,will do.

[Rozabikes Tim]

Nuts on cam sprocket suitably heated, head off, barrels off. Have to say all looks good at first glance. Nothing measured but promising

Can't find clutch nut tool and too impatient to order one and wait, so will modify an old socket with grinder.

Post some pics over the weekend if I get chance.

Really loving doing this. It is such a change for a mere curtain engineer!

[Trigger]

Nuts on cam sprocket suitably heated, head off, barrels off. Have to say all looks good at first glance. Nothing measured but promising

Can't find clutch nut tool and too impatient to order one and wait, so will modify an old socket with grinder.

Post some pics over the weekend if I get chance.

Really loving doing this. It is such a change for a mere curtain engineer!

I thought you were a haberdashery engineer 

[Sprocket]

I'm a couple steps behind you! Saw this on eBay (https://www.ebay.co.uk/itm/Honda-Clutch-Holding-Tool-Centre-Nut-Tool-Set-CB400F-400-Four-400-4-HWT051-/251421804669) and wondered whether or not it's really necessary. The vids I've seen on YouTube seem to suggest you don't need a special tool, just a castellated socket.

Thoughts please, experts?!

[Nurse Julie]

Castelated socket should work just fine 👍

[Bryanj]

The special tool is a castellated socket!

[Rozabikes Tim]

Yes I have a proper Honda one somewhere and will order one if it does not turn up before rebuild. Just impatient and want to do more on the weekend. Its so exciting!!!

[Rozabikes Tim]

Well frame all stripped and everything boxed up for later assesment.

Motor all apart besides 5 head studs. I have done the 2 nut / heat trick on all but these last ones are reluctant. They are quite thin shanked and I do not want to apply too much force and break them..... Think I will try  stud in vice and turn the whole case - (Laverda120's tip I think?) Will apply heat again but worry I may go overboard with too much! Any guidance appreciated.

Edit Ocadians vice tip - ta Julie

[Trigger]

Well frame all stripped and everything boxed up for later assesment.

Motor all apart besides 5 head studs. I have done the 2 nut / heat trick on all but these last ones are reluctant. They are quite thin shanked and I do not want to apply too much force and break them..... Think I will try  stud in vice and turn the whole case - (Laverda120's tip I think?) Will apply heat again but worry I may go overboard with too much! Any guidance appreciated.

Why do you want to remove them ?
The two nut way will twist the stud if it is well stuck in 

[Nurse Julie]

I used the vice method as advised by Ian (Orcadian) to remove the head stud that I mullered the top of trying to remove the nut. Worked well with plenty of diffused heat. But, I left all the others in as couldn't see any reason why they needed to be removed. Double nutting can actually twist the stud along its shaft as it is so long and thinner in the middle. Trying to remove it on the vice, still attached to the top casing is not the easiest manoeuvre you will ever do, trust me, its difficult.

[Rozabikes Tim]

Well frame all stripped and everything boxed up for later assesment.

Motor all apart besides 5 head studs. I have done the 2 nut / heat trick on all but these last ones are reluctant. They are quite thin shanked and I do not want to apply too much force and break them..... Think I will try  stud in vice and turn the whole case - (Laverda120's tip I think?) Will apply heat again but worry I may go overboard with too much! Any guidance appreciated.

Why do you want to remove them ?
The two nut way will twist the stud if it is well stuck in 

Was intending acid dip / paint route and assumed it would be necassary???

[Nurse Julie]

Well frame all stripped and everything boxed up for later assesment.

Motor all apart besides 5 head studs. I have done the 2 nut / heat trick on all but these last ones are reluctant. They are quite thin shanked and I do not want to apply too much force and break them..... Think I will try  stud in vice and turn the whole case - (Laverda120's tip I think?) Will apply heat again but worry I may go overboard with too much! Any guidance appreciated.

Why do you want to remove them ?
The two nut way will twist the stud if it is well stuck in 

Was intending acid dip / paint route and assumed it would be necassary???

No Tim, the studs can stay in. You are making fast progress on this strip, have you got a heated garage? 😀😁😁

[Rozabikes Tim]

Small oil rad. Keeps the nuts warm.

Things will slow down  now I would think. I have an oportunity of freebe chroming but need to get that away in near future.