SOHC.co.uk Forums > CB500/550

It has arrived!

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JustcallmeMrT:

--- Quote from: matthewmosse on September 01, 2014, 07:38:58 PM ---Apologies, I just looked again and its the small bolt hole you have fractured, probably be fine with alloy welding, for some reason I had it in my head it was the big un that had cracked, probably because on mine it was the big bolt lug. I am bound to still have the forks in question and if needed can dig them out and sell you the spare lower leg provinding it passes muster, ie no stripped threads etc. One word of warning though, with so many project machines I am inclined to take an age to find bits or even forget why I went out to the shed and get distracted by rusty things so may need reminding.

--- End quote ---
You guys are amazing with all the help and offers.  I'll keep you posted as the build progesses - I'm holding fire on new parts until I know how much the engine is going to cost me. 

Trigger:
Engines can be a open cheque book. Just do not get carried away with the finish. Polishing and new chrome can cost more than the engine parts.

JustcallmeMrT:
Does anyone know the thread size for the brake bleeders?  Looking to buy speed bleeders and they've got multiple sizes....

Trigger:
7mm. You do not need a speed bleeding kit. I never have any problems with these brakes. People for get that it is a system and must be treated as one.

bike-pusher:
I'd ditch the Comstars too.

I remember twinning the discs on my old SOHC CB750, back in the day.  You need longer bolts to pass through both discs - Gold Wing GL1000 units fit.  And then there's the speedo drive - the CB550 tin cover was necessary on the the 750.

The master cylinder will not flow enough fluid. Trust me on this.

You might like to know that the CB550 shares the back wheel with the CB500T.  However, for some extraordinary reason there are two different types of brake plate, and you need the spacers as well.  I shoved a CB500T rear wheel into my last CB550 because the original had cracked.

And that's a real one to watch for - the cast iron liner is very thin and can crack if it gets corroded.  Then you have an oval rear drum.  I imagine a good engineering workshop would be able to put in a new cast iron liner and machine it to fit, but it's easier to replace the whole wheel.

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