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Old 06-27-2011, 07:54 PM   #83 (permalink)
redyaris
Master EcoModder
 
Join Date: Jan 2010
Location: Alberta Canada
Posts: 744

redyaris - '07 Toyota Yaris
Team Toyota
90 day: 45.54 mpg (US)

Gray - '07 Suzuki GS500 F
Motorcycle
90 day: 70.4 mpg (US)

streamliner1 - '83 Honda VT500 streamliner
Motorcycle
90 day: 75.63 mpg (US)

White Whale - '12 Sprinter 2500 Cargo Van
90 day: 22.01 mpg (US)
Thanks: 81
Thanked 75 Times in 67 Posts
beatr911 the problem I was trying to address was the engine response at 3000rpm and lower. The engine surges and bucks when I try to run it below 3000rpm with low throatle opening. if I open the throatle to 3/4 or more the bucking and surging goes away. With smaller carbs the velocity through the carb would be higher at all rpm this may solve the low engine rpm performance under light throatle problem. This would also reduce the total power output, although the better aero would compensate for the loss of power.
The fuel injection solution would be better but the cost may be prohibative. I have looked at the fuel/air monitoring system I bought and find that the O2 senser is so big that I am having dificulty findng a spot on the bike exhaust to put it. The most promising spot is in the cross over tube, because it is the only spot that is protected from being knocked off, or damaged!
That 82 mpg on the 200 looks good you should join the Motorcycle team.
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