Oil Change Without Removing Sump Plug

[steve porter]

Without filter change ca. 1.5 liter, with filter change 0.9 liter remain. However, with the cutout blocked I think some "sludge" collected on the sump's bottom won't get flushed out. There is a reason why it's designed that way.

Agree, with clutch and gearbox sharing the same oil, you could end up with a fair bit of shit built up in there over time

[KiwiCol]

I agree, it's designed that way to get the most oil out of the sump, however, I don't think there would be any sludge in there. 

The filter would take care of most on the nasties that inhabit the internal working of a petrol engine, however, if it belonged to a non caring owner who didn't change the oil till it looked like treacle, then the little bit of sludge that would be left would be a drop in the ocean of sludge engulfing the remainder of the innards. 
Short story, it doesn't matter a hell of a lot IMO.  Yes it'd be better if it were there, maybe cut / grind out a portion of the helicoil once installed, else don't fret, there's plenty of other used oil remaining round the engine.

[nickygee11]

Thanks again for all the feedback and suggestions, some good opportunities to learn from others experience

[GSXKING]

I'd have to agree on the sludge sentiment. If you change the oil/filter regularly there won't ever be any (Sludge). I've read it here before, regular oil/filter changes is the key to longevity in these very well built motors. BIG UP SUZUKI. 

[KiwiCol]

is that sludge sentiment or sediment?   

[GSXKING]

Bloody predictive text 

[Andre]

is that sludge sentiment or sediment?   

It is sentiment! Or something like that as I have strong emotions (on the negative end) about things that make my bike dirty outside and inside. 

[GSXKING]

@KiwiCol what @Andre said 

[Andre]

The sentiment can go positive as well. See @Hooli as far as outside dirt ("patina") goes

[Simonic]

https://www.quickvalve.co.uk/f111_details.htm

This looks like the fella...once installed, shouldn't need to remove again. 

I used one of these on my B12 due to a previous (un)caring owner stripping the thread. I glued it in thithreadlock and it held fast. The item itself is pretty small And only came down from the sump maybe 2cm max. Obviously the exhaust hangs much lower so there was no danger of it getting caught.
I'd certainly use one again

[Tonythetiger]

I had this problem on a '79 gs750e I had a few years ago, I drilled the hole slightly bigger and fitted a bolt to fit and no leaks, BUT it was always in my head and so I went on fleabay and bought a second hand sump for next to nothing and fitted it, problem solved and no more worrying about the next oil change or leaking although it was a chew fitting it , it was worth the hassle. Tony

[VladTepes]

@nickygee11
Just be carefull to get one that doesn't stuck to far below the bike as they can catch the road on speed bumps ECT.
I think there are several different designs and models of these things .

Given that I managed to destroy a sump on a speed bump with the FACTORY plug, there is no way in heck I'd put anything that projected further on it.