Reinhoud

Than the headstock isn't the problem, the problem is further back..

I agree, when you look at the structure it is already pretty sturdy. Just other/modern forks and wheels made quite a difference.

The photo I posted is the GSX400x, I knew it was also called the impulse, didn't know about Bandit. I'm not good with models/names. I'm probably the only one who likes the GSX400x, had a look at one as a first bike, long time ago.

Looks better in a GS as in the Bandit

Nah, that's not the one I had in mind.. This is the one I was thinking of, forgot that there are about a million different models..

Is that the one with the weird sort of fairing on the front?

Not the best photo..

All you need is an angle grinder and a welder.

I've got a Bandit 1200 rear fork in my GS1000, looks great!

I thought I just give some additional information.. I saw the number 1260

I know that with the GS1000 and GS750 the headers are interchangeable, but the 750 has a bigger gap between headers and frame, I assume that it isn't any different between the GSX1100 and 750..

1100 rods are 1.5mm longer than 1000 rods, 78mm on a 1000 crank will give you 1238cc, 78mm on a 1100 crank will give you 1260cc

https://www.cmsnl.com/suzuki-gs1000-1979-n-general-export-e01_model13512/partslist/FIG-11.html#.Xh5kbsgzaM8

Picture? Cam chain guide holder, in the center of the crankshaft has 2 of those screws... Oilpump might have those screws too, that means, take the clutchbasket off to inspect, Oh I just see that you checked that already.. The alternator is also held in place with screws if I remember correctly, but the screws might be longer than 25mm, but coming loose and end up in the sump might be a bit far fetched.

Only one solution, take it apart and have a look.. More then one option.

The other 3 pistons are ok. I'm afraid that when the scraper turns the ends get hooked and scratch the barrel.

I don't trust it either..

Gents, I had pistons copied by JE, I'm not impressed by what they did, but hey.. One piston has this, see red arrow. Grooves of piston rings were cut, then the bore for the wrist pin was done. Because of a lack of enough material a bump in the oil ring was created. I had to file the bump off to make the oil move in the groove without too much resistance, there for there is a gap were the wrist pin is, about 6mm, the oil ring is not supported. Is this acceptable? As in, is this going to cause trouble? One hand I would say, should be right, other hand.... I'm not too sure.. Thanks

I haven't heard about 494 rods before, which Suzuki has those?

GS1000 parts are harder to get.. I have 3 very good con rods if you need..

Hehehe, you still had them? If not, where did you managed to find them?

Got my frame back from powder coating. I did some modifications, FPR, fuel pump and ignition module closer to each other instead everything spread out through the frame. Waiting for some engine parts, and then I can start assembling.

Haha, thanks!

Ok, thanks.