Never Seize and aluminum and SS

[Shin-Ken 1074]

I had the same problem with the sump filter screws when I first bought my 1100, to get the screws out I used a good quality cold chisel and tapped them out (not cut off) with a hammer, this was done with the bike on the centre stand and the pipes off, so access should be fine on yours.

Replaced the screws with stainless steel allen head bolts, what a great invention they are!

I change the engine oil and filter every 2000 miles (two thousand not twenty thousand) and to access the filter the exhaust system has to come off. So the sump is easy to get at in my case when the sump filter needs to be cleaned. There is also a very good reason to drop the sump on a regular maintenance program and you will not find this one in many service manuals. The dark grey/black deposits that can be seen on the sump plate is clutch dust. This sludge is off the clutch plates and not all of it is captured by the oil filter, it is abrasive and is not good to have circulating around the engine. Just wash it off with a paint brush and degreaser, rinse and dry before replacing it and the sump gasket.

I don't use anti-seize on the sump filter bolts and they come out fine each time.

The header bolts do have anti -seize, Hi-Temp C5-A Anti-Seize Lubricant part number 521008. Made in the USA by Fel-Pro Incorporated/Skokie IL 60076. It is a copper based product and its great, the header bolts have been coming out every 2000 miles for the last 22 years on this machine. Sorry about the length of this reply I hope it is of help.

[psyguy]

no worries, mate :-D
i rebuilt my engine at 95000 kms and am happy to report that the oil screen was clean as was the sump, no nasty deposits, sludge, burnt oil, metal particles, etc \\/
looking at the oil screen screws that looked 100% new i'd think that that screen has never ever been removed :shock: prior to my rebuild

[Shin-Ken 1074]

Hi there psyguy good to have a neighbour, I just checked the Suzi GS1000 manual and it lists the filter sump clean at 6000 miles as well. Its listed in the chart at the start of Section 3 in that one, catch ya later mate.

[themess]

The E24 GSX1100 service manual Section 2-1 Periodic Maintenance Chart - Engine has the oil sump filter "clean" listed for every 6000 miles. For me thats each third oil and filter change as I change the oil and filter every 2000 miles.

I have one Service Manual, for the GS650G. Its chart says nothing about cleaning the sump. I checked the .pdf of the GS850G manual, and it also says nothing about cleaning the sump. I wonder if cleaning the sump is really a good idea. When you clean the sump, do you find much crud to remove? Is this like the requirement to change brake hoses every two years? Does anyone actually do that? Mercedes used to say that every time new tires were mounted, the rims (steel in those days) should be scraped and repainted.

[Shin-Ken 1074]

Yeah I agree with you about the brake hoses, that is a bit over the top, if the hoses were to degrade at that rate there would be bikes wrapped around trees, power poles and everything else at intersections all over the world. The sump filter clean and check on the sump pan is something else. There are factors that contribute to the gunge in the sump, oil quality, regular oil/filter change, type of riding eg stop start heavy traffic compared to long runs, and riding style. Hard launching off the start, high rev down gear changing all combine to generate wear on the plates to a different degee. Your right, I've seen sump pans that are spotless when they come off and others with the gunge so thick it had to be scrapped off then washed. Maybe it's not needed in all cases, but it doesn't hurt to check. I would like to keep the Kat running for many years to come so I don't mind the little extra care here and there even if it seems unnessasary. With over 400,000km on the GS1100G engine and still going well with high even compression from each cylinder I am happy with the result, cheers.

[psyguy]

Mercedes used to say that every time new tires were mounted, the rims (steel in those days) should be scraped and repainted.

DAMN! is that all that was required??? i always used to replace the rims with NEW ones

[themess]

I would like to keep the Kat running for many years to come so I don't mind the little extra care here and there even if it seems unnessasary. With over 400,000km on the GS1100G engine and still going well with high even compression from each cylinder I am happy with the result, cheers.

400,000 km! Wow!! Has it been rebuilt?

It would seem to me that for people who ride moderately (me) that cleaning the sump would make sense if the exhaust system has to come off anyway. If there is a lot of crud at that time, do it more often.

[Shin-Ken 1074]

Carbs have been overhauled a couple of times and the valve train has been done. When the camchain and tensioner were replaced had the barrels/pistons and bottom end checked over, minimal wear and well within tolerance guides so left them as it is. Bearing in mind the GS1100G is a tourer and was not flogged (though they can take it) she had a pretty easy life and always got me there and home again everytime. As to the crude issue, sometimes its there and somtimes its not, but as an owner I think its good to know what it is, how it got there, and how to reduce its impact on engine life. Cheers.