SOHC.co.uk Forums > CB500/550
CB550K - engine rebuild (partial or full)
Erny:
What I think is not good is that rattling noise (video does not capture it perfectly....). That I think cannot be from pistons/rings?
Bryanj:
Unfortunately i cant play videos on my dumfone but i will say that 90% of rattles are uneven running.
OK take the sump off and see how much play is on the primary chain, you can also get a finger in to see if it has been rubbing the oil gallery. 550 is not normally as bad as500 but can still hit if worn.
Trigger:
I always find it hard to comment on things like this as, you will not know until you take the engine apart. What ever it is it doesn't sound good.
Compression seems good but, a test is no guarantee on on a engine this old, just look at Julies thread and the state of her pistons and that had good compression, started on the button first time everytime :o
deltarider:
Let me begin with stating that I am an amateur and I give my opinion for a better one. Having said that, I don't hear much that would worry me. Personally I like my idle a bit higher though. I myself have never managed to do a compression test right (I know: chokes open, throttle wide open).
Erny:
OK, hot comp test I can do.
Shall I also do it as dry and wet (spoon of oil into each cyl) ?
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