SOHC.co.uk Forums > CB500/550
550/4 engine
MIKE550/4:
worried about the housing , bolt still not out, sure i will knacker the housing if i take a grinder to it, take it mine is the 12 mm, on ds there is 2 mentioned , 12 mm and i think 17mm, is the housing still available,
frame is off this week end to get coated and then the engine work will commence .
matthewmosse:
I think the 12 mil nut was original but was superceded by the 17, they are I belive interchangeable. It may be possible to cut a slot in the oil filter bolt using a hacksaw with 2 or 3 blades together on the saw and then use an impact driver to undo the bolt like a giant screw rather than a bolt if an 11 mil sockett hammerd on fails. Housings are plentiul second hand but tend to have 1 or 2 fins chipped, I've a pile of the things with cosmetic damage, only a few without. I'd try using a hand file once youre close to the alloy casing if you have to resort to a grinder
SteveD CB500K0:
The 17mm is an aftermarket part that a lot of people use as it reduces the stress on the smaller bolt head. Some say that Honda designed it small so that you couldn't over-torque it and that using a 17mm will (may) allow you to over tighten it and crack something more substantial.
Me? I use the 17mm on all my 500s.
SteveD CB500K0:
Of course, the engine in my barn has an oil filter housing ...
MIKE550/4:
have not forgot steve, :), work is busy at mo, got me 40th coming up in 2 weeks as well,off to yarmouth at week end to visit friends,
ideally dont want to use yours as a donor, might use yours for next project which i have on cards,
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