It's Baffling... - Honda Shadow Forums : Shadow Motorcycle Forum
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post #1 of 12 (permalink) Old 11-06-2012, 02:43 PM Thread Starter
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Question It's Baffling...

How much does it effect the motorcycle when you take out the baffles, as far as carbs and engine performance?

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post #2 of 12 (permalink) Old 11-06-2012, 04:54 PM
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you wont gain any power. most likely you will lose power if you don't do anything with fuel and air also

I started out with nothin'... and i still got most of it left.

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post #3 of 12 (permalink) Old 11-06-2012, 05:31 PM
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Well you will allow more air out than what the bike is taking in to mix fuel etc. Without baffles, with jets, with the right mixture it will move your torque band more towards the upper rpm range than the mid to low it is at with baffles.

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post #4 of 12 (permalink) Old 11-06-2012, 06:01 PM
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We talking stock pipes or aftermarket. Eitherway it will be louder. if stock pipes might cause lean enough condition to need adjustment. If Amarket, probably will not affect tuning.

93 VT1100C Sleeper, VH Exhaust, Saddleman Seat, Baby Apes, Metzlers, 2mm sleeved and bored (1150cc),10.5:1 comp, Modified Heads, Valves, Cams, Adjustable Timing, Bored Carbs.
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post #5 of 12 (permalink) Old 11-07-2012, 01:48 AM Thread Starter
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Quote:
Originally Posted by -AJ View Post
you wont gain any power. most likely you will lose power if you don't do anything with fuel and air also
Yeah, I didnt think I would gain any power, I meant more like do I need to rejet because of the removed baffles or is it not a big deal?

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post #6 of 12 (permalink) Old 11-07-2012, 08:18 AM
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If only the baffles are removed on your vlx, you might get away with only having to adjust the a/f screw to get rid of any popping or backfiring on deceleration. That's all I had to do. If you fiddle around and change anything on the air filter you will likely need to re-jet the carb too.

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post #7 of 12 (permalink) Old 11-07-2012, 09:12 AM
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Quote:
Originally Posted by TCazes View Post
Well you will allow more air out than what the bike is taking in to mix fuel etc.
No you won't. Taking the baffles out does NOT create a vacuum.

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post #8 of 12 (permalink) Old 11-07-2012, 11:41 AM
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Quote:
Originally Posted by TCazes View Post
Well you will allow more air out than what the bike is taking in to mix fuel etc. Without baffles, with jets, with the right mixture it will move your torque band more towards the upper rpm range than the mid to low it is at with baffles.
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Originally Posted by adlowe View Post
No you won't. Taking the baffles out does NOT create a vacuum.

Actually, after the motor, the exhaust is the main restriction to the amount intake air flow. If you remove the baffles, intake flow Goes UP. Doesn't create vaccum just a bigger hole for the air to exit through. More air flow often means you'll need to adjust the AF mixture. In general increasing air flow will increase power, it also make the AF LEAN. You won't see any added POWER, but you might see better PERFORMANCE at speed, but a loss of torque off the line. Basically the available torque will move a little higher in the rev range. With your mods, the changes won't be much, we're talking tiny fractions of a # here..

93 VT1100C Sleeper, VH Exhaust, Saddleman Seat, Baby Apes, Metzlers, 2mm sleeved and bored (1150cc),10.5:1 comp, Modified Heads, Valves, Cams, Adjustable Timing, Bored Carbs.
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post #9 of 12 (permalink) Old 11-07-2012, 12:23 PM
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Originally Posted by 93gc40 View Post
Actually, after the motor, the exhaust is the main restriction to the amount intake air flow. If you remove the baffles, intake flow Goes UP. Doesn't create vaccum just a bigger hole for the air to exit through.
Yes. But you will NOT get more out than the engine takes in -- as TCazes stated when he posted "Well you will allow more air out than what the bike is taking in to mix fuel etc."

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post #10 of 12 (permalink) Old 11-07-2012, 03:56 PM
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On my vt750 I didn't notice any real change except the sound. It now sounds like a motorcycle. No popping or backfiring or sputtering on decel. Did not notice any loss of power.

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