It amazing how often people with experience on modern machines wonder whats wrong when they first come into contact with a 30 plus year old air cooled machine. The noises , the braking, the handling, the power delivery etc etc. Why does my bike sound like it has a bunch of marbles rattling around inside it? Why does my bike hesitate before taking off when I whack open the throttle all the way? Etc Etc Etc. Sometimes there are things wrong but often its just the old bike. Spend some time here and you will see for yourself. . . The lack of info in your post (I guess you had some other posts that we were supposed to read, why didn't you just continue the old thread?) is pretty common with newbies so I threw out a reminder in case you had unrealistic expectations. Frankly your reply is rather punkish. . .
I also gave you some "practical" things to consider including a reality check of your accelerator pump, and a suggestion to swap back to the 110s. You now state you have a stock bike yet you have upped the mains 3 steps in an attempt to avoid some sort of government mandated leaness. Why doesn't your bike run right? Could very well be your mains. . .Feel free to do a plug chop but don't expect old plugs to give you any sort of accurate reading. Assuming that you put in new plugs, work your way quickly up to the troubled area, ride in that area for a few minutes, hit the kill switch and coast to a stop you might be suprised to find that your plug doesn't resemble the plugs you see on various plug charts. Plugs take many miles of use before they can be properly compared to those pics. Be prepared to spend some time reading up on plug chops, and plug reading. There are some good sites out there. If all this too much trouble then consider doing the "practical" thing which is undoing the changes you made.
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No need for name calling but if that’s what gives you kicks than more power to ya. I may be new to this sight, but I by no means consider myself a newbie. On the same hand I’m by no means an old timer or a seasoned mechanic.
This is not my first time around the block with an SOHC4. I bought my first 750 when I was 16 years old and owned it until I was 27. I sold it only to miss it so much that I went out and bought a K8. When I bought my K7 it had a bad lower crank case half. The PO had a mishap that put the chain threw it. I completely tore it down, found and put a used case half on and rebuilt the motor at the same time. There have been to many other motorcycles to mention but in reference to the SOHC4 750 I spent last winter completely dissembling my K8 repainting, re-chroming, cleaning, polishing and putting it back to as stock I know how. I know I didn't give you my personal history in the beginning of this thread either (didn’t think I had to) but there is some of it. I guess what I’m trying to say is I think I have a good idea of what these bikes should sound like, I know how they brake, and I know how they handle, and I have a good idea of how to take them apart and put them back together. I even know how to maintain them. I have experience with rebuilding, sinking and cleaning carbs. That said I by no means consider myself an expert on carburetion or anything else for that matter. At best I am great machinist/welder/ fabricator(that’s what I do for a living) (not motorcycle mechanic), who really just enjoys building and restoring old motorcycles. That is why I have asked the questions I have. Long story short, I pulled the air box, took it for a ride and the problem completely disappeared. This, your suggestion to put it back to the stock 110’s, and some common sense made me realize it was running rich. So I switched back to the stock 110's and the problem is gone. However, I had these and other issues described earlier before I switched to the 117.5s. I’ll never know for sure but I think the original issue was carb boots, maybe a slightly clogged fuel filter, improperly gapped accelerator pump and probably about 9 other things I fixed after adding the 117.5s. So call me names if you will but you may want to pick better ones than newbie and punk.
