SOHC.co.uk Forums > CB500/550
CB550K - engine rebuild (partial or full)
K2-K6:
One thing that I feel helps, I use a Bahco 1/4 drive socket set that has not only really good quality six sided sockets, but also a very good angular drive extension bar ( barrel shaped drive cube) which allows just enough displacement to get onto bolts without having to use a drive knuckle.
Obviously doesn't comment on exhaust alignment, but useful nonetheless.
deltarider:
Thanks K2-K6. I have no plans removing forsaid oilpan. I have done it maybe two or three times since 1980 and it always proved very clean in there. Have a look at the screenfilter the last time I opened the pan. I didn't even bother to clean it. The oilpan dito. I have also done it twice on my yacht. Same result. I was just curious Honda's strive for perfection back then had gone so far that - with the exhausts hung as it should - all ten bolts were accessible for s straight pipe wrench. I doubt it.
Trigger:
Loosen the nuts off on the down pipes and the rear mounting bolt , and the pipes will move enough to get a T bar in or a 3/8 drive ;)
Erny:
to steer back to my topic (if you allow me ;)):
Please somebody to advice on my first questions – before I pull engine and start stripping, any advice what I should do before? (Trigger maybe?)
I’m thinking about:
- leak test (to estimate rings / head status to be confirmed when removed)
- redo compression test to have reference for comparison after rebuild. Last measurement was: dry: 120/120/110/130 psi, wet (teaspoon oil into each cylinder) : 150/150/145/145 psi
- detailed inspection of clutch and shifting mechanism under basket – maybe after that case splitting not necessary (?)
Any thoughts / ideas / advices what else I should do before pulling engine / stripping?
To provide more about current engine "noise" at idle - here is short video I made today https://youtu.be/9CKtENPWWDY, interested for your comments
Bryanj:
Sonds like you need to inspect pistons and rings BUT a hot compression test is best, if you can get 135/140 when hot i would leave it alone.
Top end can be done with engine in, apart from that every time you open a can you find more worms
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