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I have a knock on my 1982 suzuki gs1100e 16v motor.....
A little history about the bike and than the problem description....
I bought the bike in non running condition, the motor was sitting for 14years but would spin fine when I turned it over. I decided to rebuild the whole motor; all new pistons rings, jugs were honed and the valves were replaced and cut. When I finished the assembly of the motor I fired it up and the motor ran perfectly fine... I drove it for the last 1000miles and the motor ran perfectly fine but the transmission always had hard time shifting, it was stiff and would always be harder to put in gear than any of my other gs motors, and it was impossible to put the bike into neutral from first gear unless the motor was shut off,,, I was able to put it into neutral from 2nd gear while it was running but it was very difficult to get it just right but it was possible to put it into neutral but not easy....
But here comes the bad new the other day I got up to a quick start and everything was great as usual super nice power and smooth running up to 100mph but than when I decelerated I noticed a noise like a cam chain grinding against the case noise, but the noise was not coming from the cam chain area, instead the noise is more in the crank shaft and transmission area hard to tell exactly which one. When I put it into gear and put it under load it tends to start to knock as if the timing chain was super tight, I have had this kind of noise when I had the manual APE timing chain adjusted way too tight, it made a low end knock sound just like this but I know it is not the timing chain noise this time because I have an original suzuki cam tensioner and had it for the last 1000miles with no problems. But the bike still runs perfectly fine and shifts just as before, but the noise is very excessive and does not sound good at all it sounds like I'm grinding the side of the case or gears or something else. Can anyone tell me what might be the problem, I understand I might have to split the case but I don't really know what to even look for since I never worked on a transmission before....
A little history about the bike and than the problem description....
I bought the bike in non running condition, the motor was sitting for 14years but would spin fine when I turned it over. I decided to rebuild the whole motor; all new pistons rings, jugs were honed and the valves were replaced and cut. When I finished the assembly of the motor I fired it up and the motor ran perfectly fine... I drove it for the last 1000miles and the motor ran perfectly fine but the transmission always had hard time shifting, it was stiff and would always be harder to put in gear than any of my other gs motors, and it was impossible to put the bike into neutral from first gear unless the motor was shut off,,, I was able to put it into neutral from 2nd gear while it was running but it was very difficult to get it just right but it was possible to put it into neutral but not easy....
But here comes the bad new the other day I got up to a quick start and everything was great as usual super nice power and smooth running up to 100mph but than when I decelerated I noticed a noise like a cam chain grinding against the case noise, but the noise was not coming from the cam chain area, instead the noise is more in the crank shaft and transmission area hard to tell exactly which one. When I put it into gear and put it under load it tends to start to knock as if the timing chain was super tight, I have had this kind of noise when I had the manual APE timing chain adjusted way too tight, it made a low end knock sound just like this but I know it is not the timing chain noise this time because I have an original suzuki cam tensioner and had it for the last 1000miles with no problems. But the bike still runs perfectly fine and shifts just as before, but the noise is very excessive and does not sound good at all it sounds like I'm grinding the side of the case or gears or something else. Can anyone tell me what might be the problem, I understand I might have to split the case but I don't really know what to even look for since I never worked on a transmission before....
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