Well I've got the bike on the road after the ear shave and the rotor rewind. The electrical system is good with the batt gauge and the AGM batt. I have two green lights all the time which puts it at about 13.5 volts.
Now we get to Lance's question about the performance of the bike with this mod.
I would like to hear of the improved performance results, fuel mileage and what jets are needed to compliment your shave. I would like to compare to the standard K&N pod filter and re-jet.
Let me say that my comment about it running fine with the factory jets was completely correct for that day. I was not ever able to duplicate it again. I was having trouble with the chokes and suspect that they may have been stuck for that one ride, because I had them operating correctly before the next ride.
Taking it out again it started hard. When it was choked, it seemed like it was starving for fuel. Any roll on the throttle would kill it until it got warmed up. When I was riding, it would start to cut out and have a hard time around 4k, it had zero power in the upper range.
There are lot's of places to get jets on the internet but I ended up going to Tucker Rocky at my local Yamaha shop. I got the standard jet sizes of 40 and 140, let me say that Tucker Rocky is a good place to get jets if you can figure out what you need. The numbers and prices for our carbs are as follows:
Pilot #40 - TR Part # 428177 - 4 jets - $11.00
Main #140 - TR Part # 469719 - 5 jets - $6.05
for needle shims I used #4 washers found at the local hardware store, 5 for .39 cents. Yea, you get extra jets but I couldn't beat those prices for 2 jets and shipping off the internet.
After the rejet, the bike starts and runs great. The rejet made a huge difference in how the bike acts. My fuel mileage has gone down noticeably but it has plenty of power, it idles well and has been very reliable. I'm not sure if I like the trade off in mileage yet.
I have one question for anyone who knows. The bike has plenty of power, I have noticed though that when I'm in the higher gears at around 4000 rpm, cruising seems to be OK as long as there is no wind. However, if I have a headwind or a lot of resistance, I notice a definate surging of the bike, the engine seems to be running steady and the tone doesn't change but the power surges. It's not the wind pushing on the bike. If I roll the throttle slightly, the surging goes away and the engine regains it's power. Is this a matter of shims? My #4 washers may be a little thin and maybe the needles need to come up some more? I put 2 shims under the needle heads so the needles are pulled up like they should be. Any thoughts would be appreciated.