550/4 engine

[MIKE550/4]

well this bolt is a night mare , so decided to knock it on head for a day and go try again tomorrow,

taking the last bits of frame , wheels off, shocks off , etc

one thing left centre stand, does this actually come fully off, taken off the 2 bolts and the spring , but how do you actually release it from the frame, as you see from pic started to bend back the 2 bits were the bolts were but does not see right, surely i am weaking the frame, do you guys leave the centre stand on to get powder coated

hope you are all enjoying watching me struggling and thanks for help

[Dave M]

IIRC, there's a hollow shaft which I think pushes through the frame and the main stand from the brake pedal side and is then secured by a split pin.

Those bits your prising open have bolts through them which lock the shaft in place so it doesn't rotate in the frame. The stand is supposed to rotate on the shaft.

[MIKE550/4]

cheers dave , just noticed that silver pipe with split pin, makes sense now, could not see it because of mud and general rubbish over it,just hope i can get what i bent, back into place should be fine

cheers again

[Dave M]

Best of luck!

[Bryanj]

If you get real stuck the oil filter housing is the same on 400/500/550/750 up to f1

and the bolts are available pattern from good old DS

[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I think the 12 mil nut was original but was superceded by the 17, they are I belive interchangeable.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,

[SteveD CB500K0]

Pah!


Just a kid.


How can you be only 40 and know stuff about 1970's bikes?

[MIKE550/4]

me dad and a few uncles were into bikes and had a few, mainly hondas and  and one triumph bonneville and if i remember a triton or trident ? was really young perhaps 8-9 , my earliest bike memory   

[Bryanj]

Triton--- Trident not much difference really, both leaked like a sieve and were not the most reliable----Ducks behind screen and awaits hurled bricks

[MIKE550/4]

yeah , he did seem to spend more time fixing it than riding it, was a nice bike though when it was going, think it was a trident, hardly see any these days compared to hondas , or is that just me

always had the argument brit v jap , thats another topic though

[matthewmosse]

Just a kid? I'm 27 and remenber nothing of sohc hondas til I saw a pile of stripped engines languishing in someones shed, ended up with a very baskett case hardtail chop wiith a twisted frame and 3 or 4 dead engines none complete......... One way to learn what goes on in an engine