Honda-SOHC

Hi

has anyone bought these bearings (not from Mr Honda himself) but from a normal bearing supplier?

If so, can you tell me the size or the bearing number.

Thanks

Looks like my cam horse shoe has wear on it. Feels sharp edges around the 'shiney' area. Plus, the guides feel rough. I've managed to free it up but it has a tight spot. Do I throw it and get new or maybe get re engineered with brass bushes?

Those crank case shells are good and can be reused again 

Thanks Trigger

and some more pictures

the last one showing a snapped bolt for the cam tensioner and the engine bracket and stud I cant remove. Might have to send to an engineering shop to have these removed.

the cam tensioner itself is seized as expected

thanks trigger. advice taken. hopefully, strip the crank case today then i'll post some more pictures

something like this as a piston set? https://www.ebay.co.uk/itm/264088297262

Thanks trigger.

No score marks on barrels but the engine sat for a long time unused (plus 15 years). I think its 48,000 miles on the clock.

Do I really need to replace the primary chain as a matter of course?

There is a local machine shop nearby which I will approach for the rebore.

Hi All,

so i'm finally getting on with the Honda CB400 1977. I've asked many questions on here so far with plenty more to come.

I'll try and bring you all up to speed.

(1) ]Bike has been stripped down an now lives in boxes.

(2) I've started to refurbish the clocks but awaiting to make a decision on the clock faces, that is either to get vinyl over layor leave them as is. I'll probably go with 'leave as is'

(3) The frame is due to go to the powder coaters next week along with the yokes and some other bits as recommend in a previous post.

(4) I'm stripping the engine at the moment (Yet to split the crankcases). This is where I'm going to struggle. I've noticed the following things
(4a) Some of the fins on the oil filter are damaged.
(4b) The sump pan has been welded around the sump plug.
(4c) The oil pick up filter has metal pieces in it. It was also covered in thick gunge almost like gearbox oil.
(4d) The pistons and head are covered in thick carbon.
(4e) Removing the barrel some of the piston rings fell out (they were in two pieces).
(4f) The cam tensioner adjuster has been broken.
(4g) The barrels look ok but I need to measure them yet.
(4h) The pistons look ok but I need to measure them.

So my current  plan once I've split the crankcases are: Check crank bearing shells (plastic gauge them), measure barrel and pistons firstly for wear and to understand if the engine has standard pistons. Then get all the cases cleaned and checked. Then my plan is to get the barrels honed / rebored if required with new pistons ect, new bearings etc and then start to rebuild the engine. I want the engine in  the frame as I think this will be the easiest way to build the bike back up.

Please feel free to comment and give me guidance.

Is there anyone nearby to Plymouth that maybe able to help me / guide me?
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