Question about Motorcycles
That depends - power output and therefore the amount of fuel required is proportional to the amount of air an engine consumes.
The standard setup is likely to run the mixture as lean as the engine will tolerate due to the requirement for minimal emissions and a competitive fuel consumption and it is probably this that is at least partly responsible for Hondas famously suffering a reduction of midrange power when exhaust backpressure is changed - pattern replacement exhaust silencers rarely deliver quite the midrange results of OE.
Honda development means the cam profiles and valve timing work in conjunction with exhaust design and carburettor settings and it is unwise to consider any one thing in isolation and there is more affecting carburetion than the main jet. Depending on carb type there is the needle profile, needle jet and possibly dashpot spring to consider and tuning a carb successfully to perfection is something that is almost a "black art".
Few minor modifications either increase the pressure on the engine pistons or succeed in making the engine consume more air and therefore it produces no more torque or power but where air consumption is increased, more fuel will be needed though all most kerbside rejetting achieves is usually a heavier consumption for little or no net gain.
I suggest you remove the baffles and ride the machine and if it isn't significantly better - put them back again, because for most people most of the time the manufacturer knows best and they spend millions making the best compromises. If you want something different from your bike - get a different bike!
Posted on Jan 04, 2020
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Posted on Jan 02, 2017
SOURCE: 2002 HONDA SHADOW ACE 750 CARB
It sounds like you may have or will be jetting your carbs. I did this using the directions with the kit and used the Clyman manual for this bike to show me step by step how to remove the carborator. You will only need to attach 2 of the 4 hoses on your carb. syncronizer. If I remember right, you need to remove the bolt-on cooling fins to expose the engine block. The is a black screw or bolt that you take out and screw the threaded metal adapter of the sync tool. Be careful using the sync tool. Be very light on the throttle or the vacuum in the cylinder will **** in the mercury from the sync tool - not good. The problem you are stating on idle & backing off sometimes happens when the carbs are running rich (too much fuel) Hope that gets you in the right direction.
Posted on Oct 03, 2009
they are not stock, just call your local Honda shop ask for the parts desk, tell them what you want. They will help you get the right carb parts. without vacuume gauges you might just pay for the work to be done,
Posted on Apr 12, 2010
On my 1998 I cut old muffler off. Inside I found smaller pipes. I could remove the baffles. So I order the same size pipe as the out side pipe from JEGS. Welded it over the smaller pipe. Has a nice tone and now getting better MPG. Hope this helps. My HD friends will not ride on my right. They say it's to loud.
Posted on May 18, 2010
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