I'll start by explaining what's done, the kind of riding i do and the shape of the bike.
As far as any real mods performance wise not much, just normal maintenance. ... removal of the snorkel tube, new air filter for the stock air box system. Regularly change spark plugs, the stock carb is runing if memory serves me correctly a 55 pilot and i went up to a 160 main. Front sprocket is a 16 and I'm waiting on a 40 tooth rear to come in, hopefully it'll relax the engine a little more for when i do run down the highway, and an emgo muffler and i removed the core not just for more then already a loud sound .. the engine seem to run a little hotter with it in.
The riding is mostly commuter, a few times i go run an errand or just go for a ride. Mostly back roads, lots of hills and bends, few times I'll get on the highway just to open it up and cruise and it is faster for those times that i just want to get home or where I'm going a bit quicker. Anyone who has ridden a highway on one of these knows my concern for a more relaxed engine rpm at 65 - 75 mph.
The bike was in pretty good shape when i got it last year. Spent the winter giving her a good once over to make sure she was up to the task. I've done pads, rebuilt both calipers, tires, fork seals and progressive springs, a set of CB550 rear shocks, bars and grips, clutch and EBC springs, front master was rebuilt to. Chased down a few oil leaks which was no big deal, check valve lash and adjusting them accordingly. Some preventive maintenance on the starting system, new clutch cable .... i could go on but we will say i was real anal about what i didn't / did like and what i wanted.
Lately she's developed a bit of a bog and doesn't seem to have the same pepp she did before, use to pull real good in all gears no matter the speed... incline etc. I'm thinking the 160 main is what could be the issue, possible it could be the air cut valve in the carb not entirely sure. Think I'm going to my local Honda spot and downsize on the main jet to maybe a 150 or might even put the 140 or 145 i have back in. Idles fine i had a fuel problem a while back but it was a leaky fuel line which obviously i replaced. I have been reading about everything i could find from the dyno run post and anything else i could when i have the time. The bike has about 14 K on it now ... don't think it's a mechanical problem as far as compression, timing , etc... but i will do the necessary tests just to validate.
I've been thinking alot of doing away with this stock carb and go to a regular slide type carb ... never did like CV styles much. Any suggestions on what to run on it with minimal changes as far as the intake manifold, air box, and possibly the throttle setup like the push / pull cables ? ... I'm open to ideas.
WTF304
Mike