SOHC.co.uk Forums > CB350/400

Re-threading carbs?!

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Laverdaroo:
 ;D ;D ;D ;D ;D

Alexrayz:
Hey everyone, I am resuscitating this thread to give an update on the bike.

Carbs were fine, even more so with Al’s OEM jets.

The issue was the previous owner did an extremely poor job of cleaning the cylinders… It was more of a rebore at that point.
So much so that the pistons can wiggle somewhat… As a result there was almost no compression, cylinder 2 got 0,72bar for instance x).
 It goes to show how well these old things were built as it still somehow managed to tick over.

Anyway, this was way beyond my skill and equipment level so I had a local shop (Rolling Moto Le Mans) do a full diagnosis and rebuild. 
Sounds a bit overkill, but I already had spent a lot on repairs and figured it’d be best to just get everything done once.

Cost me a pretty penny (3k in total) But it is good as new now, with a kicker:
It was so overly bored out, it needed to be refitted with a big bore kit haha! So it is a 450 now and it purrs like a kitten!

I’ve been running it for a year now and apart from a bad oil pressure switch it’s been a good sport.

Yipeee!


Sent from my iPhone using Tapatalk

taysidedragon:
Glad to hear that it's running well now. Enjoy! 😎👍

McCabe-Thiele (Ted):
Good result with the big bore - what we need are some photos or a video of the engine running via U Tube!

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