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Author Topic: CB550 Top end rebuild  (Read 678 times)

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Offline crantonr

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CB550 Top end rebuild
« on: May 09, 2020, 08:50:17 AM »
Hi All,

In the process of stripping back the top end of my K3 CB550. Not going too badly until I encountered a bent inlet valve on #1 cyl which probably explains the power loss problems I was getting. Will the guide need replacing as well or might it still be OK? Also I noticed that some of the large valve springs had 2x shims under them. Is this to compensate for weak springs or do you think the PO couldn't count?

Richard
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Offline bryanj

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Re: CB550 Top end rebuild
« Reply #1 on: May 09, 2020, 12:42:34 PM »
I think the PO was a moron, there is a warning on how to fit the cam cover without bending valves in the manual and excess shims is just carelessness!
Insect the guide carefully for cracks/breaks and see what play there is with new valve
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline crantonr

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Re: CB550 Top end rebuild
« Reply #2 on: May 09, 2020, 11:43:44 PM »
OK thanks guys
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